{"id":17812,"date":"2026-07-18T06:28:48","date_gmt":"2026-07-17T21:28:48","guid":{"rendered":"https:\/\/genai-ai.co.jp\/ai-kanri\/?p=17812"},"modified":"2026-09-01T15:15:37","modified_gmt":"2026-09-01T06:15:37","slug":"cc-c-array","status":"publish","type":"post","link":"https:\/\/genai-ai.co.jp\/ai-kanri\/blog\/cc-c-array\/","title":{"rendered":"\u30102026\u5e748\u6708\u6700\u65b0\u3011C\u8a00\u8a9e\u306e\u914d\u5217\u5b8c\u5168\u30ac\u30a4\u30c9\uff5c\u5ba3\u8a00\u30fb\u521d\u671f\u5316\u30fb\u30dd\u30a4\u30f3\u30bf\u30fb\u591a\u6b21\u5143\u914d\u5217\u30fbClaude Code\u6d3b\u7528\u6cd5"},"content":{"rendered":"\n<style>\n.g-flow-row{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;}\n.g-flow-item{background:linear-gradient(135deg,#1a1a1a,#2a1015);color:#fff;border-radius:8px;padding:16px 14px;min-width:130px;flex:1;text-align:center;}\n.g-flow-arrow{color:#dc2626;font-size:20px;font-weight:700;}\n.g-card-row{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 32px;}\n.g-card-row>div{flex:1;min-width:220px;}\n@media(max-width:600px){\n  .g-flow-row{flex-direction:column;}\n  .g-flow-arrow{transform:rotate(90deg);}\n  .g-card-row{flex-direction:column;}\n  .g-card-row>div{min-width:100%;}\n}\n<\/style>\n\n\n\n<div style=\"margin:0 0 32px;\">\n  <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/07\/thumb-cc-c-array.jpg\" alt=\"\u30102026\u5e747\u6708\u6700\u65b0\u3011C\u8a00\u8a9e\u306e\u914d\u5217\u5b8c\u5168\u30ac\u30a4\u30c9\uff5c\u5ba3\u8a00\u30fb\u521d\u671f\u5316\u30fb\u30dd\u30a4\u30f3\u30bf\u30fb\u591a\u6b21\u5143\u914d\u5217\u30fbClaude Code\u6d3b\u7528\u6cd5\" style=\"width:100%;height:auto;border-radius:12px;display:block;\">\n<\/div>\n\n\n\n\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u3092\u5b66\u3073\u59cb\u3081\u308b\u3068\u3001\u65e9\u3044\u6bb5\u968e\u3067\u300c\u914d\u5217\u300d\u306b\u51fa\u4f1a\u3044\u307e\u3059\u3002\u914d\u5217\u306f<strong>\u540c\u3058\u578b\u306e\u8907\u6570\u306e\u5024\u3092\u4e00\u3064\u306e\u5909\u6570\u540d\u3067\u307e\u3068\u3081\u3066\u7ba1\u7406\u3067\u304d\u308b\u30c7\u30fc\u30bf\u69cb\u9020<\/strong>\u3067\u3059\u3002C\u8a00\u8a9e\u306e\u914d\u5217\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u30dd\u30a4\u30f3\u30bf\u30fb\u6587\u5b57\u5217\u30fb\u52d5\u7684\u30e1\u30e2\u30ea\u78ba\u4fdd\u3092\u5b66\u3076\u305f\u3081\u306e\u57fa\u790e\u306b\u3082\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3057\u304b\u3057C\u8a00\u8a9e\u306e\u914d\u5217\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u843d\u3068\u3057\u7a74\u304c\u3042\u308a\u307e\u3059\u3002\u5883\u754c\u5916\u30a2\u30af\u30bb\u30b9\u306b\u3088\u308b\u30e1\u30e2\u30ea\u7834\u58ca\u3001\u914d\u5217\u306e\u30b3\u30d4\u30fc\u6642\u306e\u6ce8\u610f\u70b9\uff08=\u6f14\u7b97\u5b50\u3067\u306f\u5024\u304c\u30b3\u30d4\u30fc\u3055\u308c\u306a\u3044\uff09\u3001\u30dd\u30a4\u30f3\u30bf\u3068\u306e\u5bc6\u63a5\u306a\u95a2\u4fc2\u306a\u3069\u3001\u521d\u5fc3\u8005\u304c\u8e93\u304d\u3084\u3059\u3044\u30dd\u30a4\u30f3\u30c8\u304c\u591a\u304f\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f<strong>C\u8a00\u8a9e\u306e\u914d\u5217\u306b\u95a2\u3059\u308b\u5168\u77e5\u8b58\u3092\u4f53\u7cfb\u7684\u306b\u89e3\u8aac<\/strong>\u3057\u307e\u3059\u3002\u3055\u3089\u306b<strong>Claude Code\u3092\u4f7f\u3063\u3066C\u8a00\u8a9e\u306e\u914d\u5217\u51e6\u7406\u30b3\u30fc\u30c9\u3092\u81ea\u52d5\u751f\u6210\u3059\u308b\u65b9\u6cd5<\/strong>\u3082\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u300cC\u8a00\u8a9e\u3092\u5b66\u3076\u300d\u3068\u3044\u3046\u65b9\u306e\u591a\u304f\u304c\u3001\u5b66\u7fd2\u306e\u5165\u308a\u53e3\u3092\u63a2\u3057\u3066\u3044\u307e\u3059\u3002\u914d\u5217\u30fb\u30dd\u30a4\u30f3\u30bf\u30fb\u6587\u5b57\u5217\u3092\u7406\u89e3\u3057\u305f\u3046\u3048\u3067\u3001AI\uff08Claude Code\uff09\u3092\u4f7f\u3044\u306a\u304c\u3089\u5b9f\u969b\u306e\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u7df4\u7fd2\u3092\u3059\u308b\u306e\u304c2026\u5e74\u73fe\u5728\u306e\u6700\u3082\u52b9\u7387\u7684\u306a\u5b66\u7fd2\u6cd5\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>C\u8a00\u8a9e\u306e<strong>\u914d\u5217\u306e\u5ba3\u8a00\u30fb\u521d\u671f\u5316\u30fb\u4ee3\u5165\u306e3\u30d1\u30bf\u30fc\u30f3<\/strong>\u3092\u5b8c\u5168\u89e3\u8aac<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u30dd\u30a4\u30f3\u30bf\u3068\u914d\u5217\u306e\u95a2\u4fc2<\/strong>\u2014\u2014\u914d\u5217\u540d\u304c\u30dd\u30a4\u30f3\u30bf\u306b\u306a\u308b\u4ed5\u7d44\u307f<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u6d45\u3044\u30b3\u30d4\u30fc\u3068\u6df1\u3044\u30b3\u30d4\u30fc\uff08memcpy\u95a2\u6570\uff09<\/strong>\u306e\u9055\u3044\u3068\u6b63\u3057\u3044\u4f7f\u3044\u65b9<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>char\u578b\u306e\u6587\u5b57\u5217\u914d\u5217<\/strong>\u306e\u6271\u3044\u65b9\u3068NULL\u7d42\u7aef\u6587\u5b57<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>sizeof\u6f14\u7b97\u5b50<\/strong>\u3067\u914d\u5217\u306e\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u591a\u6b21\u5143\u914d\u5217\uff082\u6b21\u5143\u914d\u5217\uff09<\/strong>\u306e\u5ba3\u8a00\u30fb\u521d\u671f\u5316\u30fb\u30eb\u30fc\u30d7\u51e6\u7406<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>Claude Code\u3092\u4f7f\u3063\u305fC\u8a00\u8a9e\u30b3\u30fc\u30c9\u306e\u81ea\u52d5\u751f\u6210<\/strong>\u3068\u30c7\u30d0\u30c3\u30b0\u652f\u63f4<\/span><\/div>\n\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/aibpo\/makase\/blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=aibpo_makase\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u793e\u54e1AIKATA\uff08\u670830\u4e07\u5186\u3067\u696d\u52d9\u307e\u304b\u305b\u653e\u984c\uff09\u306e\u7121\u6599\u76f8\u8ac7 \u4e88\u7d04\u30da\u30fc\u30b8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_makase_20260904.jpg\" alt=\"AI\u793e\u54e1AIKATA\uff5c\u670830\u4e07\u5186\u306e\u5b9a\u984d\u3067\u5fa1\u793e\u306e\u696d\u52d9\u3092\u307e\u308b\u3054\u3068\u5dfb\u304d\u53d6\u308a\u307e\u3059\uff08\u7121\u6599\u76f8\u8ac760\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/koteihi-line\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=koteihi_shindan\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u516c\u5f0fLINE\u306e\u56fa\u5b9a\u8cbb\u524a\u6e1b\u8a3a\u65ad\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_koteihi_line.jpg\" alt=\"\u5fa1\u793e\u304c\u6e1b\u3089\u305b\u308b\u56fa\u5b9a\u8cbb\u306f\u6708\u3044\u304f\u3089\u304b\uff5c\u516c\u5f0fLINE\u3067\u8cea\u554f\u306b\u7b54\u3048\u308b\u3060\u3051\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-01\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">01<\/span>\n  <span class=\"section-label\" style=\"display:block;\">C ARRAY BASICS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">C\u8a00\u8a9e\u306e\u914d\u5217\u3068\u306f\uff1f\u5909\u6570\u3068\u306e\u9055\u3044\u3068\u30e1\u30e2\u30ea\u306e\u4ed5\u7d44\u307f<\/span>\n  <span class=\"section-desc\">\u914d\u5217\u306f\u30e1\u30e2\u30ea\u4e0a\u306e\u9023\u7d9a\u3057\u305f\u9818\u57df\u306b\u5024\u3092\u4e26\u3079\u305f\u30c7\u30fc\u30bf\u69cb\u9020<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u306e\u914d\u5217\u306f\u3001<strong>\u540c\u3058\u578b\u306e\u30c7\u30fc\u30bf\u304c\u9023\u7d9a\u3057\u305f\u30e1\u30e2\u30ea\u9818\u57df\u306b\u4e26\u3093\u3067\u683c\u7d0d\u3055\u308c\u308b\u30c7\u30fc\u30bf\u69cb\u9020<\/strong>\u3067\u3059\u3002\u4f8b\u3048\u3070\u300cint arr[5]\u300d\u3068\u5ba3\u8a00\u3059\u308b\u3068\u3001\u30e1\u30e2\u30ea\u4e0a\u306b int\u578b\uff084\u30d0\u30a4\u30c8\uff09\u00d75\u500b = 20\u30d0\u30a4\u30c8\u306e\u9023\u7d9a\u3057\u305f\u9818\u57df\u304c\u78ba\u4fdd\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u914d\u5217\uff08Array\uff09<\/strong>\uff1aC\u8a00\u8a9e\u3067\u540c\u3058\u578b\u306e\u8907\u6570\u306e\u5024\u3092\u30e1\u30e2\u30ea\u4e0a\u306e\u9023\u7d9a\u3057\u305f\u9818\u57df\u306b\u683c\u7d0d\u3059\u308b\u30c7\u30fc\u30bf\u69cb\u9020\u3002\u300carr[0]\u300d\u300carr[1]\u300d\u306e\u3088\u3046\u306b\u6dfb\u5b57\uff08\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff09\u3067\u5404\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3002\u6dfb\u5b57\u306f0\u304b\u3089\u59cb\u307e\u308b\uff080\u59cb\u307e\u308a\uff09\u3002C\u8a00\u8a9e\u306e\u914d\u5217\u306f\u30dd\u30a4\u30f3\u30bf\u3068\u5bc6\u63a5\u306b\u95a2\u4fc2\u3057\u3066\u304a\u308a\u3001\u914d\u5217\u540d\u306f\u305d\u306e\u914d\u5217\u306e\u5148\u982d\u8981\u7d20\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u8868\u3059\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b\u3002<\/p>\n<\/div>\n\n\n\n<table>\n<thead><tr><th>\u6bd4\u8f03\u9805\u76ee<\/th><th>\u901a\u5e38\u306e\u5909\u6570\uff08int a;\uff09<\/th><th>\u914d\u5217\uff08int arr[5];\uff09<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u683c\u7d0d\u3067\u304d\u308b\u5024\u306e\u6570<\/td><td>1\u3064\u3060\u3051<\/td><td>\u5ba3\u8a00\u3057\u305f\u8981\u7d20\u6570\uff085\u3064\uff09<\/td><\/tr>\n<tr><td>\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5<\/td><td>\u5909\u6570\u540d\uff08a\uff09<\/td><td>\u5909\u6570\u540d+\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff08arr[0]\u301carr[4]\uff09<\/td><\/tr>\n<tr><td>\u30e1\u30e2\u30ea\u4e0a\u306e\u914d\u7f6e<\/td><td>\u4efb\u610f\u306e\u5834\u6240<\/td><td>\u9023\u7d9a\u3057\u305f\u30a2\u30c9\u30ec\u30b9\u306b\u914d\u7f6e<\/td><\/tr>\n<tr><td>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9<\/td><td>\u306a\u3057<\/td><td>0\u304b\u3089\u59cb\u307e\u308b\u6574\u6570<\/td><\/tr>\n<tr><td>\u30eb\u30fc\u30d7\u3068\u306e\u76f8\u6027<\/td><td>\u6bce\u56de\u5909\u6570\u540d\u3092\u5909\u3048\u308b\u5fc5\u8981\u3042\u308a<\/td><td>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5909\u6570\u3092\u30eb\u30fc\u30d7\u3067\u5909\u5316\u3055\u305b\u3066\u51e6\u7406<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">\u914d\u5217\u306e\u30e1\u30e2\u30ea\u4e0a\u306e\u914d\u7f6e\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u30dd\u30a4\u30f3\u30bf\u6f14\u7b97\u3092\u5b66\u3076\u6e96\u5099\u306b\u3082\u306a\u308a\u307e\u3059\u3002int\u578b\u914d\u5217 arr[5] \u306e\u5834\u5408\u3001arr[0]\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u4eee\u306b0x1000\u3068\u3059\u308b\u3068\u3001arr[1]\u306f0x1004\u3001arr[2]\u306f0x1008\u2026\u30684\u30d0\u30a4\u30c8\u305a\u3064\u5897\u52a0\u3057\u3066\u9023\u7d9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">C\u8a00\u8a9e\u306e\u914d\u5217\u3067\u6700\u3082\u91cd\u8981\u306a\u30eb\u30fc\u30eb\u306f\u300c\u6dfb\u5b57\u304c0\u304b\u3089\u59cb\u307e\u308b\u300d\u3053\u3068\u3067\u3059\u3002arr[5]\u3068\u5ba3\u8a00\u3057\u305f\u914d\u5217\u306f arr[0]\u301carr[4] \u306e5\u8981\u7d20\u3067\u3059\u3002arr[5]\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u300c\u5883\u754c\u5916\u30a2\u30af\u30bb\u30b9\u300d\u3068\u547c\u3070\u308c\u308b\u5371\u967a\u306a\u52d5\u4f5c\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u304cC\u8a00\u8a9e\u306e\u30d0\u30b0\u3067\u6700\u3082\u591a\u3044\u539f\u56e0\u306e\u4e00\u3064\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/aibpo\/makase\/blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=aibpo_makase\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u793e\u54e1AIKATA\uff08\u670830\u4e07\u5186\u3067\u696d\u52d9\u307e\u304b\u305b\u653e\u984c\uff09\u306e\u7121\u6599\u76f8\u8ac7 \u4e88\u7d04\u30da\u30fc\u30b8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_makase_20260904.jpg\" alt=\"AI\u793e\u54e1AIKATA\uff5c\u670830\u4e07\u5186\u306e\u5b9a\u984d\u3067\u5fa1\u793e\u306e\u696d\u52d9\u3092\u307e\u308b\u3054\u3068\u5dfb\u304d\u53d6\u308a\u307e\u3059\uff08\u7121\u6599\u76f8\u8ac760\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/koteihi-line\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=koteihi_shindan\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u516c\u5f0fLINE\u306e\u56fa\u5b9a\u8cbb\u524a\u6e1b\u8a3a\u65ad\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_koteihi_line.jpg\" alt=\"\u5fa1\u793e\u304c\u6e1b\u3089\u305b\u308b\u56fa\u5b9a\u8cbb\u306f\u6708\u3044\u304f\u3089\u304b\uff5c\u516c\u5f0fLINE\u3067\u8cea\u554f\u306b\u7b54\u3048\u308b\u3060\u3051\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-02\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">02<\/span>\n  <span class=\"section-label\" style=\"display:block;\">DECLARE INIT<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u914d\u5217\u306e\u5ba3\u8a00\u30fb\u521d\u671f\u5316\u30fb\u4ee3\u5165\u306e\u65b9\u6cd5<\/span>\n  <span class=\"section-desc\">3\u3064\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u4f7f\u3044\u5206\u3051\u3066C\u8a00\u8a9e\u306e\u914d\u5217\u3092\u6b63\u3057\u304f\u521d\u671f\u5316\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">2-1. \u5ba3\u8a00\u3068\u8981\u7d20\u3054\u3068\u306e\u4ee3\u5165<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u3082\u57fa\u672c\u7684\u306a\u65b9\u6cd5\u3067\u3059\u3002\u307e\u305a\u914d\u5217\u3092\u5ba3\u8a00\u3057\u3001\u5f8c\u304b\u3089\u5404\u8981\u7d20\u306b\u500b\u5225\u306b\u5024\u3092\u4ee3\u5165\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e1e;border-radius:8px;padding:20px 24px;margin:20px 0;overflow-x:auto;\">\n  <div style=\"font-size:11px;color:#888;margin-bottom:8px;text-transform:uppercase;letter-spacing:1px;\">C\u8a00\u8a9e<\/div>\n  <pre style=\"margin:0;font-family:'Courier New',Consolas,monospace;font-size:14px;line-height:1.8;color:#d4d4d4;white-space:pre;\">#include &lt;stdio.h&gt;\n\nint main() {\n    int arr[5];         \/* 5\u8981\u7d20\u306eint\u578b\u914d\u5217\u3092\u5ba3\u8a00 *\/\n\n    \/* \u5404\u8981\u7d20\u306b\u5024\u3092\u4ee3\u5165 *\/\n    arr[0] = 10;\n    arr[1] = 20;\n    arr[2] = 30;\n    arr[3] = 40;\n    arr[4] = 50;\n\n    printf(\"arr[0] = %d\\n\", arr[0]);  \/* 10 *\/\n    printf(\"arr[4] = %d\\n\", arr[4]);  \/* 50 *\/\n\n    return 0;\n}<\/pre>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">2-2. \u5ba3\u8a00\u3068\u540c\u6642\u306b\u521d\u671f\u5316\uff08\u521d\u671f\u5316\u5b50\u30ea\u30b9\u30c8\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5ba3\u8a00\u3068\u540c\u6642\u306b\u4e2d\u62ec\u5f27{}\u3067\u5024\u3092\u4e0e\u3048\u308b\u65b9\u6cd5\uff08\u521d\u671f\u5316\u5b50\u30ea\u30b9\u30c8\uff09\u3067\u3059\u3002\u8981\u7d20\u6570\u3092\u7701\u7565\u3059\u308b\u3068\u3001\u4e0e\u3048\u305f\u5024\u306e\u6570\u304c\u81ea\u52d5\u7684\u306b\u8981\u7d20\u6570\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e1e;border-radius:8px;padding:20px 24px;margin:20px 0;overflow-x:auto;\">\n  <div style=\"font-size:11px;color:#888;margin-bottom:8px;text-transform:uppercase;letter-spacing:1px;\">C\u8a00\u8a9e<\/div>\n  <pre style=\"margin:0;font-family:'Courier New',Consolas,monospace;font-size:14px;line-height:1.8;color:#d4d4d4;white-space:pre;\">#include &lt;stdio.h&gt;\n\nint main() {\n    \/* \u65b9\u6cd51: \u8981\u7d20\u6570\u3092\u6307\u5b9a\u3057\u3066\u521d\u671f\u5316 *\/\n    int arr1[5] = {10, 20, 30, 40, 50};\n\n    \/* \u65b9\u6cd52: \u8981\u7d20\u6570\u3092\u7701\u7565\uff08\u81ea\u52d5\u30675\u8981\u7d20\u306b\u306a\u308b\uff09 *\/\n    int arr2[] = {10, 20, 30, 40, 50};\n\n    \/* \u65b9\u6cd53: \u4e00\u90e8\u3060\u3051\u521d\u671f\u5316\uff08\u6b8b\u308a\u306f0\u306b\u306a\u308b\uff09 *\/\n    int arr3[5] = {10, 20};  \/* arr3[2]\u301carr3[4]\u306f0 *\/\n\n    \/* \u65b9\u6cd54: \u5168\u8981\u7d20\u30920\u3067\u521d\u671f\u5316 *\/\n    int arr4[5] = {0};\n\n    printf(\"%d\\n\", arr1[2]);  \/* 30 *\/\n    printf(\"%d\\n\", arr3[2]);  \/* 0 *\/\n    printf(\"%d\\n\", arr4[4]);  \/* 0 *\/\n\n    return 0;\n}<\/pre>\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\"><span style=\"font-size:18px;\">&#128161;<\/span><strong style=\"color:#16a34a;font-size:15px;\">\u8981\u7d20\u6570\u7701\u7565\u306f\u6dfb\u5b57\u306e\u6307\u5b9a\u30df\u30b9\u3092\u9632\u3050<\/strong><\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u521d\u671f\u5316\u5b50\u30ea\u30b9\u30c8\u3067\u8981\u7d20\u6570\u3092\u7701\u7565\u3059\u308b\uff08int arr[] = {10, 20, 30};\uff09\u3068\u3001\u5024\u306e\u500b\u6570\u304c\u81ea\u52d5\u7684\u306b\u8981\u7d20\u6570\u306b\u306a\u308a\u307e\u3059\u3002\u5f8c\u304b\u3089\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u3066\u3082\u8981\u7d20\u6570\u3092\u624b\u52d5\u3067\u5909\u66f4\u3057\u306a\u304f\u3066\u6e08\u3080\u305f\u3081\u3001\u4fdd\u5b88\u3057\u3084\u3059\u3044\u30b3\u30fc\u30c9\u306b\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u5ba3\u8a00\u5f8c\u306b\u8ffd\u52a0\u4ee3\u5165\u3059\u308b\u5834\u5408\u306f\u8981\u7d20\u6570\u3092\u660e\u793a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\"><span style=\"font-size:20px;\">&#9888;&#65039;<\/span><strong style=\"color:#dc2626;font-size:16px;\">\u672a\u521d\u671f\u5316\u306e\u914d\u5217\u306b\u306f\u4e0d\u5b9a\u5024\u304c\u5165\u308b<\/strong><\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">int arr[5];\u3068\u5ba3\u8a00\u3060\u3051\u3057\u3066\u5024\u3092\u4ee3\u5165\u305b\u305a\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001\u305d\u306e\u30e1\u30e2\u30ea\u9818\u57df\u306b\u3042\u308b\u4e0d\u5b9a\u306e\u5024\uff08\u30b4\u30df\u5024\uff09\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u91cd\u5927\u306a\u30d0\u30b0\u306e\u539f\u56e0\u306b\u306a\u308a\u307e\u3059\u3002\u914d\u5217\u3092\u5ba3\u8a00\u3057\u305f\u3089\u5fc5\u305a\u521d\u671f\u5316\u3059\u308b\u304b\u3001\u4f7f\u3046\u524d\u306b\u5fc5\u305a\u5024\u3092\u4ee3\u5165\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5168\u8981\u7d20\u30920\u306b\u3057\u305f\u3044\u5834\u5408\u306f\u300cint arr[5] = {0};\u300d\u304c\u6700\u3082\u5b89\u5168\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/aibpo\/makase\/blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=aibpo_makase\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u793e\u54e1AIKATA\uff08\u670830\u4e07\u5186\u3067\u696d\u52d9\u307e\u304b\u305b\u653e\u984c\uff09\u306e\u7121\u6599\u76f8\u8ac7 \u4e88\u7d04\u30da\u30fc\u30b8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_makase_20260904.jpg\" alt=\"AI\u793e\u54e1AIKATA\uff5c\u670830\u4e07\u5186\u306e\u5b9a\u984d\u3067\u5fa1\u793e\u306e\u696d\u52d9\u3092\u307e\u308b\u3054\u3068\u5dfb\u304d\u53d6\u308a\u307e\u3059\uff08\u7121\u6599\u76f8\u8ac760\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/koteihi-line\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=koteihi_shindan\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u516c\u5f0fLINE\u306e\u56fa\u5b9a\u8cbb\u524a\u6e1b\u8a3a\u65ad\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_koteihi_line.jpg\" alt=\"\u5fa1\u793e\u304c\u6e1b\u3089\u305b\u308b\u56fa\u5b9a\u8cbb\u306f\u6708\u3044\u304f\u3089\u304b\uff5c\u516c\u5f0fLINE\u3067\u8cea\u554f\u306b\u7b54\u3048\u308b\u3060\u3051\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-03\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">03<\/span>\n  <span class=\"section-label\" style=\"display:block;\">POINTER ARRAY<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u30dd\u30a4\u30f3\u30bf\u3068\u914d\u5217\u306e\u95a2\u4fc2\uff1a\u30a2\u30c9\u30ec\u30b9\u30a2\u30af\u30bb\u30b9<\/span>\n  <span class=\"section-desc\">\u914d\u5217\u540d\u306f\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b\u2014\u2014C\u8a00\u8a9e\u306e\u6838\u5fc3\u7684\u306a\u6982\u5ff5\u3092\u89e3\u8aac<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u3067\u914d\u5217\u3092\u7406\u89e3\u3059\u308b\u3046\u3048\u3067\u6b20\u304b\u305b\u306a\u3044\u77e5\u8b58\u304c\u300c<strong>\u914d\u5217\u540d\u306f\u305d\u306e\u5148\u982d\u8981\u7d20\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u8868\u3059\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b<\/strong>\u300d\u3068\u3044\u3046\u4e8b\u5b9f\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>\u30dd\u30a4\u30f3\u30bf\uff08Pointer\uff09<\/strong>\uff1aC\u8a00\u8a9e\u3067\u30e1\u30e2\u30ea\u306e\u30a2\u30c9\u30ec\u30b9\uff08\u756a\u5730\uff09\u3092\u683c\u7d0d\u3059\u308b\u5909\u6570\u3002\u300cint *p;\u300d\u3067\u6574\u6570\u578b\u3092\u6307\u3059\u30dd\u30a4\u30f3\u30bfp\u3092\u5ba3\u8a00\u3059\u308b\u3002\u914d\u5217\u540d\u306f\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b\u305f\u3081\u3001\u300cint arr[5]\u300d\u306e\u5834\u5408\u3001arr\u3068\u3060\u3051\u66f8\u304f\u3068\u914d\u5217\u306e\u5148\u982d\u8981\u7d20\uff08arr[0]\uff09\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u3059\u30dd\u30a4\u30f3\u30bf\u306b\u306a\u308b\u3002*(arr+1)\u306farr[1]\u3068\u540c\u3058\u610f\u5473\u306b\u306a\u308b\uff08\u30dd\u30a4\u30f3\u30bf\u6f14\u7b97\uff09\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#1e1e1e;border-radius:8px;padding:20px 24px;margin:20px 0;overflow-x:auto;\">\n  <div style=\"font-size:11px;color:#888;margin-bottom:8px;text-transform:uppercase;letter-spacing:1px;\">C\u8a00\u8a9e<\/div>\n  <pre style=\"margin:0;font-family:'Courier New',Consolas,monospace;font-size:14px;line-height:1.8;color:#d4d4d4;white-space:pre;\">#include &lt;stdio.h&gt;\n\nint main() {\n    int arr[5] = {10, 20, 30, 40, 50};\n\n    \/* \u914d\u5217\u540d\u306f\u30dd\u30a4\u30f3\u30bf\uff08\u5148\u982d\u8981\u7d20\u306e\u30a2\u30c9\u30ec\u30b9\uff09\u3068\u3057\u3066\u6a5f\u80fd *\/\n    printf(\"arr = %p\\n\", arr);           \/* \u5148\u982d\u30a2\u30c9\u30ec\u30b9 *\/\n    printf(\"&amp;arr[0] = %p\\n\", &arr[0]);  \/* \u540c\u3058\u30a2\u30c9\u30ec\u30b9 *\/\n\n    \/* \u30dd\u30a4\u30f3\u30bf\u6f14\u7b97\u3067\u306e\u30a2\u30af\u30bb\u30b9\uff08arr[1]\u3068*(arr+1)\u306f\u540c\u3058\uff09 *\/\n    printf(\"arr[1] = %d\\n\", arr[1]);     \/* 20 *\/\n    printf(\"*(arr+1) = %d\\n\", *(arr+1)); \/* 20\uff08\u540c\u3058\uff09 *\/\n\n    \/* \u30dd\u30a4\u30f3\u30bf\u5909\u6570\u306b\u914d\u5217\u3092\u4ee3\u5165 *\/\n    int *p = arr;\n    printf(\"p[2] = %d\\n\", p[2]);         \/* 30 *\/\n    printf(\"*(p+2) = %d\\n\", *(p+2));     \/* 30\uff08\u540c\u3058\uff09 *\/\n\n    return 0;\n}<\/pre>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u914d\u5217\u540d\u3068\u30dd\u30a4\u30f3\u30bf\u306e\u95a2\u4fc2\u3092\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5<\/th><th>\u610f\u5473<\/th><th>\u4f7f\u3046\u5834\u9762<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>arr[i]<\/td><td>\u6dfb\u5b57\u3092\u4f7f\u3063\u305f\u6a19\u6e96\u7684\u306a\u914d\u5217\u30a2\u30af\u30bb\u30b9<\/td><td>\u901a\u5e38\u306e\u914d\u5217\u64cd\u4f5c\uff08\u8aad\u307f\u3084\u3059\u3044\uff09<\/td><\/tr>\n<tr><td>*(arr + i)<\/td><td>\u30dd\u30a4\u30f3\u30bf\u6f14\u7b97\uff08arr[i]\u3068\u540c\u7fa9\uff09<\/td><td>\u30dd\u30a4\u30f3\u30bf\u64cd\u4f5c\u3092\u610f\u8b58\u3059\u308b\u5834\u9762<\/td><\/tr>\n<tr><td>int *p = arr; p[i]<\/td><td>\u30dd\u30a4\u30f3\u30bf\u5909\u6570\u7d4c\u7531\u306e\u30a2\u30af\u30bb\u30b9<\/td><td>\u95a2\u6570\u5f15\u6570\u3067\u914d\u5217\u3092\u53d7\u3051\u53d6\u308b\u5834\u5408<\/td><\/tr>\n<tr><td>&arr[i]<\/td><td>\u914d\u5217\u306ei\u756a\u76ee\u8981\u7d20\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97<\/td><td>\u8981\u7d20\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u5225\u306e\u95a2\u6570\u306b\u6e21\u3059\u5834\u5408<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/aibpo\/makase\/blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=aibpo_makase\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u793e\u54e1AIKATA\uff08\u670830\u4e07\u5186\u3067\u696d\u52d9\u307e\u304b\u305b\u653e\u984c\uff09\u306e\u7121\u6599\u76f8\u8ac7 \u4e88\u7d04\u30da\u30fc\u30b8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_makase_20260904.jpg\" alt=\"AI\u793e\u54e1AIKATA\uff5c\u670830\u4e07\u5186\u306e\u5b9a\u984d\u3067\u5fa1\u793e\u306e\u696d\u52d9\u3092\u307e\u308b\u3054\u3068\u5dfb\u304d\u53d6\u308a\u307e\u3059\uff08\u7121\u6599\u76f8\u8ac760\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/koteihi-line\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=koteihi_shindan\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u516c\u5f0fLINE\u306e\u56fa\u5b9a\u8cbb\u524a\u6e1b\u8a3a\u65ad\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_koteihi_line.jpg\" alt=\"\u5fa1\u793e\u304c\u6e1b\u3089\u305b\u308b\u56fa\u5b9a\u8cbb\u306f\u6708\u3044\u304f\u3089\u304b\uff5c\u516c\u5f0fLINE\u3067\u8cea\u554f\u306b\u7b54\u3048\u308b\u3060\u3051\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-04\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">04<\/span>\n  <span class=\"section-label\" style=\"display:block;\">ARRAY COPY<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u914d\u5217\u306e\u30b3\u30d4\u30fc\uff1a\u6d45\u3044\u30b3\u30d4\u30fc\u3068\u6df1\u3044\u30b3\u30d4\u30fc\uff08memcpy\uff09<\/span>\n  <span class=\"section-desc\">=\u6f14\u7b97\u5b50\u3067\u306f\u914d\u5217\u306f\u30b3\u30d4\u30fc\u3055\u308c\u306a\u3044\u2014\u2014memcpy\u3068strncpy\u3092\u4f7f\u3046\u7406\u7531<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u3067\u914d\u5217\u3092\u30b3\u30d4\u30fc\u3057\u305f\u3044\u5834\u9762\u306f\u3088\u304f\u3042\u308a\u307e\u3059\u304c\u3001<strong>=\u6f14\u7b97\u5b50\u3067\u306f\u914d\u5217\u306e\u5185\u5bb9\u306f\u30b3\u30d4\u30fc\u3067\u304d\u307e\u305b\u3093<\/strong>\u3002\u3053\u308c\u306fC\u8a00\u8a9e\u3092\u5b66\u3076\u4eba\u304c\u5fc5\u305a\u8e93\u304f\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>memcpy\uff08\u30e1\u30e2\u30ea\u30b3\u30d4\u30fc\u95a2\u6570\uff09<\/strong>\uff1aC\u8a00\u8a9e\u306e\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\uff08string.h\uff09\u306e\u95a2\u6570\u3002\u300cmemcpy(\u30b3\u30d4\u30fc\u5148, \u30b3\u30d4\u30fc\u5143, \u30d0\u30a4\u30c8\u6570)\u300d\u306e\u5f62\u3067\u4f7f\u3044\u3001\u6307\u5b9a\u3057\u305f\u30d0\u30a4\u30c8\u6570\u5206\u306e\u30e1\u30e2\u30ea\u3092\u4e38\u3054\u3068\u30b3\u30d4\u30fc\u3059\u308b\u3002\u914d\u5217\u306e\u30b3\u30d4\u30fc\u306b\u4f7f\u3046\u5834\u5408\u3001\u30d0\u30a4\u30c8\u6570\u306f\u300csizeof(\u578b) * \u8981\u7d20\u6570\u300d\u3067\u8a08\u7b97\u3059\u308b\u3002\u6587\u5b57\u5217\uff08char\u914d\u5217\uff09\u306e\u30b3\u30d4\u30fc\u306b\u306fstrncpy\u95a2\u6570\u304c\u5b89\u5168\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#1e1e1e;border-radius:8px;padding:20px 24px;margin:20px 0;overflow-x:auto;\">\n  <div style=\"font-size:11px;color:#888;margin-bottom:8px;text-transform:uppercase;letter-spacing:1px;\">C\u8a00\u8a9e<\/div>\n  <pre style=\"margin:0;font-family:'Courier New',Consolas,monospace;font-size:14px;line-height:1.8;color:#d4d4d4;white-space:pre;\">#include &lt;stdio.h&gt;\n#include &lt;string.h&gt;\n\nint main() {\n    int src[5] = {10, 20, 30, 40, 50};\n    int dst[5];\n\n    \/* NG: =\u6f14\u7b97\u5b50\u3067\u306f\u914d\u5217\u306e\u5024\u306f\u30b3\u30d4\u30fc\u3055\u308c\u306a\u3044 *\/\n    \/* dst = src;   \u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u308b *\/\n\n    \/* OK: memcpy\u3092\u4f7f\u3063\u305f\u6b63\u3057\u3044\u30b3\u30d4\u30fc *\/\n    memcpy(dst, src, sizeof(int) * 5);\n\n    \/* \u30b3\u30d4\u30fc\u3055\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d *\/\n    for (int i = 0; i &lt; 5; i++) {\n        printf(\"dst[%d] = %d\\n\", i, dst[i]);\n    }\n    \/* \u51fa\u529b: 10 20 30 40 50 *\/\n\n    \/* src\u3092\u5909\u66f4\u3057\u3066\u3082dst\u306f\u5909\u308f\u3089\u306a\u3044\uff08\u72ec\u7acb\u3057\u305f\u30b3\u30d4\u30fc\uff09 *\/\n    src[0] = 999;\n    printf(\"dst[0]\u306f\u305d\u306e\u307e\u307e: %d\\n\", dst[0]);  \/* 10 *\/\n\n    return 0;\n}<\/pre>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u6d45\u3044\u30b3\u30d4\u30fc\u3068\u6df1\u3044\u30b3\u30d4\u30fc\u306e\u9055\u3044\u3082\u6574\u7406\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u30b3\u30d4\u30fc\u306e\u7a2e\u985e<\/th><th>\u8aac\u660e<\/th><th>C\u8a00\u8a9e\u3067\u306e\u5b9f\u73fe<\/th><th>\u6ce8\u610f\u70b9<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u6d45\u3044\u30b3\u30d4\u30fc\uff08Shallow Copy\uff09<\/td><td>\u30dd\u30a4\u30f3\u30bf\u5909\u6570\u306e\u307f\u30b3\u30d4\u30fc\uff08\u540c\u3058\u30e1\u30e2\u30ea\u3092\u53c2\u7167\uff09<\/td><td>int *p = arr; (\u30dd\u30a4\u30f3\u30bf\u306e\u30b3\u30d4\u30fc)<\/td><td>\u7247\u65b9\u3092\u5909\u66f4\u3059\u308b\u3068\u3082\u3046\u7247\u65b9\u3082\u5909\u308f\u308b<\/td><\/tr>\n<tr><td>\u6df1\u3044\u30b3\u30d4\u30fc\uff08Deep Copy\uff09<\/td><td>\u30e1\u30e2\u30ea\u4e0a\u306e\u5024\u3092\u65b0\u305f\u306a\u9818\u57df\u306b\u30b3\u30d4\u30fc<\/td><td>memcpy(dst, src, \u30b5\u30a4\u30ba)<\/td><td>\u72ec\u7acb\u3057\u305f\u30b3\u30d4\u30fc\u304c\u4f5c\u3089\u308c\u308b<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">C\u8a00\u8a9e\u3092\u5b66\u3076\u4eba\u304c\u300c\u306a\u305c=\u3067\u30b3\u30d4\u30fc\u3067\u304d\u306a\u3044\u306e\uff1f\u300d\u3068\u611f\u3058\u308b\u306e\u306f\u3001\u9ad8\u6c34\u6e96\u8a00\u8a9e\uff08Python\u30fbJava\u306a\u3069\uff09\u3067\u306f\u81ea\u52d5\u3067\u30c7\u30a3\u30fc\u30d7\u30b3\u30d4\u30fc\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u305f\u3081\u3067\u3059\u3002C\u8a00\u8a9e\u306f\u30e1\u30e2\u30ea\u7ba1\u7406\u3092\u81ea\u5206\u3067\u884c\u3046\u8a00\u8a9e\u306a\u306e\u3067\u3001\u300c\u3069\u306e\u30e1\u30e2\u30ea\u306b\u4f55\u30d0\u30a4\u30c8\u3092\u30b3\u30d4\u30fc\u3059\u308b\u304b\u300d\u3092\u660e\u793a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002memcpy\u306f\u305d\u306e\u660e\u793a\u7684\u306a\u30b3\u30d4\u30fc\u64cd\u4f5c\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/aibpo\/makase\/blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=aibpo_makase\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u793e\u54e1AIKATA\uff08\u670830\u4e07\u5186\u3067\u696d\u52d9\u307e\u304b\u305b\u653e\u984c\uff09\u306e\u7121\u6599\u76f8\u8ac7 \u4e88\u7d04\u30da\u30fc\u30b8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_makase_20260904.jpg\" alt=\"AI\u793e\u54e1AIKATA\uff5c\u670830\u4e07\u5186\u306e\u5b9a\u984d\u3067\u5fa1\u793e\u306e\u696d\u52d9\u3092\u307e\u308b\u3054\u3068\u5dfb\u304d\u53d6\u308a\u307e\u3059\uff08\u7121\u6599\u76f8\u8ac760\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/koteihi-line\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=koteihi_shindan\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u516c\u5f0fLINE\u306e\u56fa\u5b9a\u8cbb\u524a\u6e1b\u8a3a\u65ad\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_koteihi_line.jpg\" alt=\"\u5fa1\u793e\u304c\u6e1b\u3089\u305b\u308b\u56fa\u5b9a\u8cbb\u306f\u6708\u3044\u304f\u3089\u304b\uff5c\u516c\u5f0fLINE\u3067\u8cea\u554f\u306b\u7b54\u3048\u308b\u3060\u3051\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-05\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">05<\/span>\n  <span class=\"section-label\" style=\"display:block;\">CHAR ARRAY<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u6587\u5b57\u5217\u3092\u914d\u5217\u3067\u6271\u3046\u65b9\u6cd5\uff08char\u914d\u5217\uff09<\/span>\n  <span class=\"section-desc\">NULL\u7d42\u7aef\u6587\u5b57\u306e\u4ed5\u7d44\u307f\u3068printf\u30fbscanf\u30fbstrncpy\u306e\u6b63\u3057\u3044\u4f7f\u3044\u65b9<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u3067\u306f\u6587\u5b57\u5217\u3092\u6271\u3046\u305f\u3081\u306e\u5c02\u7528\u306e\u578b\u304c\u306a\u304f\u3001<strong>char\u578b\u306e\u914d\u5217\uff08char\u914d\u5217\uff09\u3092\u4f7f\u3063\u3066\u6587\u5b57\u5217\u3092\u8868\u73fe<\/strong>\u3057\u307e\u3059\u3002C\u8a00\u8a9e\u306e\u6587\u5b57\u5217\u51e6\u7406\u3092\u7406\u89e3\u3059\u308b\u306b\u306f\u300cNULL\u7d42\u7aef\u6587\u5b57\u300d\u306e\u6982\u5ff5\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>NULL\u7d42\u7aef\u6587\u5b57\uff08\\0\uff09<\/strong>\uff1aC\u8a00\u8a9e\u306e\u6587\u5b57\u5217\u304c\u7d42\u308f\u308a\u3092\u793a\u3059\u7279\u5225\u306a\u6587\u5b57\u3002\u6587\u5b57\u30b3\u30fc\u30c9\u304c0\uff08\u30bc\u30ed\uff09\u306e\u6587\u5b57\u3067\u3001\u300c\\0\u300d\u3068\u66f8\u304f\u3002char\u578b\u306e\u914d\u5217\u3067\u6587\u5b57\u5217\u3092\u6271\u3046\u5834\u5408\u3001\u6587\u5b57\u306e\u5f8c\u306b\u5fc5\u305a\\0\u304c\u4ed8\u304f\u3002\u4f8b\uff1a\u300cHello\u300d\u3092\u683c\u7d0d\u3059\u308b\u306b\u306f char str[6] = \"Hello\"; \u304c\u5fc5\u8981\uff085\u6587\u5b57 + \\0 = 6\u30d0\u30a4\u30c8\uff09\u3002\\0\u306e\u3076\u3093\u3092\u5fd8\u308c\u308b\u3068\u6587\u5b57\u5217\u64cd\u4f5c\u95a2\u6570\u304c\u30e1\u30e2\u30ea\u5883\u754c\u3092\u8d8a\u3048\u3066\u3057\u307e\u3046\u5371\u967a\u304c\u3042\u308b\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#1e1e1e;border-radius:8px;padding:20px 24px;margin:20px 0;overflow-x:auto;\">\n  <div style=\"font-size:11px;color:#888;margin-bottom:8px;text-transform:uppercase;letter-spacing:1px;\">C\u8a00\u8a9e<\/div>\n  <pre style=\"margin:0;font-family:'Courier New',Consolas,monospace;font-size:14px;line-height:1.8;color:#d4d4d4;white-space:pre;\">#include &lt;stdio.h&gt;\n#include &lt;string.h&gt;\n\nint main() {\n    \/* \u6587\u5b57\u5217\u306e\u521d\u671f\u5316\u65b9\u6cd51: \u6587\u5b57\u5217\u30ea\u30c6\u30e9\u30eb\u3067\u521d\u671f\u5316 *\/\n    char str1[10] = \"Hello\";  \/* H-e-l-l-o-\\0 \u30676\u30d0\u30a4\u30c8\u4f7f\u7528 *\/\n\n    \/* \u6587\u5b57\u5217\u306e\u521d\u671f\u5316\u65b9\u6cd52: \u6587\u5b57\u914d\u5217\u3067\u500b\u5225\u306b\u6307\u5b9a *\/\n    char str2[6] = {'H', 'e', 'l', 'l', 'o', '\\0'};\n\n    \/* \u8868\u793a *\/\n    printf(\"str1 = %s\\n\", str1);  \/* Hello *\/\n    printf(\"str2 = %s\\n\", str2);  \/* Hello *\/\n\n    \/* \u6587\u5b57\u5217\u306e\u9577\u3055\uff08\\0\u3092\u9664\u3044\u305f\u6587\u5b57\u6570\uff09 *\/\n    printf(\"\u9577\u3055: %zu\\n\", strlen(str1));  \/* 5 *\/\n\n    \/* \u6587\u5b57\u5217\u306e\u30b3\u30d4\u30fc\uff08strcpy\u3067\u306f\u306a\u304fstrncpy\u304c\u5b89\u5168\uff09 *\/\n    char dst[10];\n    strncpy(dst, str1, sizeof(dst) - 1);\n    dst[sizeof(dst) - 1] = '\\0';  \/* \u5b89\u5168\u306e\u305f\u3081\u672b\u5c3e\u306bNULL\u3092\u660e\u793a *\/\n    printf(\"\u30b3\u30d4\u30fc: %s\\n\", dst);  \/* Hello *\/\n\n    return 0;\n}<\/pre>\n<\/div>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\"><span style=\"font-size:20px;\">&#9888;&#65039;<\/span><strong style=\"color:#dc2626;font-size:16px;\">\u6587\u5b57\u5217\u914d\u5217\u306e\u30b5\u30a4\u30ba\u306fNULL\u7d42\u7aef\u6587\u5b57\u306e1\u30d0\u30a4\u30c8\u5206\u3092\u5fd8\u308c\u306a\u3044<\/strong><\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\"Hello\"\u3068\u3044\u30465\u6587\u5b57\u306e\u6587\u5b57\u5217\u3092\u683c\u7d0d\u3059\u308b\u306b\u306f\u3001char str[6]\uff085\u6587\u5b57 + \\0\u7d42\u7aef\u6587\u5b57\uff09\u304c\u5fc5\u8981\u3067\u3059\u3002char str[5]\u3068\u5ba3\u8a00\u3057\u3066\u3057\u307e\u3046\u3068\\0\u304c\u5165\u3089\u305a\u3001printf\u7b49\u306e\u6587\u5b57\u5217\u95a2\u6570\u304c\u6b63\u3057\u304f\u52d5\u4f5c\u3057\u306a\u3044\u5371\u967a\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001strcpy\u95a2\u6570\u3067\u306f\u30d0\u30c3\u30d5\u30a1\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u306e\u5371\u967a\u304c\u3042\u308b\u305f\u3081\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u89b3\u70b9\u304b\u3089strncpy\uff08\u30b3\u30d4\u30fc\u3059\u308b\u6700\u5927\u30d0\u30a4\u30c8\u6570\u3092\u6307\u5b9a\u3067\u304d\u308b\uff09\u3092\u4f7f\u3046\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/aibpo\/makase\/blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=aibpo_makase\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u793e\u54e1AIKATA\uff08\u670830\u4e07\u5186\u3067\u696d\u52d9\u307e\u304b\u305b\u653e\u984c\uff09\u306e\u7121\u6599\u76f8\u8ac7 \u4e88\u7d04\u30da\u30fc\u30b8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_makase_20260904.jpg\" alt=\"AI\u793e\u54e1AIKATA\uff5c\u670830\u4e07\u5186\u306e\u5b9a\u984d\u3067\u5fa1\u793e\u306e\u696d\u52d9\u3092\u307e\u308b\u3054\u3068\u5dfb\u304d\u53d6\u308a\u307e\u3059\uff08\u7121\u6599\u76f8\u8ac760\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/koteihi-line\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=koteihi_shindan\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u516c\u5f0fLINE\u306e\u56fa\u5b9a\u8cbb\u524a\u6e1b\u8a3a\u65ad\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_koteihi_line.jpg\" alt=\"\u5fa1\u793e\u304c\u6e1b\u3089\u305b\u308b\u56fa\u5b9a\u8cbb\u306f\u6708\u3044\u304f\u3089\u304b\uff5c\u516c\u5f0fLINE\u3067\u8cea\u554f\u306b\u7b54\u3048\u308b\u3060\u3051\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-06\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">06<\/span>\n  <span class=\"section-label\" style=\"display:block;\">SIZEOF ELEMENT<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u914d\u5217\u306e\u8981\u7d20\u6570\u3092sizeof\u3067\u53d6\u5f97\u3059\u308b\u65b9\u6cd5<\/span>\n  <span class=\"section-desc\">sizeof(\u914d\u5217\u540d) \/ sizeof(\u914d\u5217\u540d[0])\u3067\u8981\u7d20\u6570\u3092\u52d5\u7684\u306b\u8a08\u7b97\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u3067\u306f\u914d\u5217\u306e\u8981\u7d20\u6570\u3092\u52d5\u7684\u306b\u53d6\u5f97\u3059\u308b\u305f\u3081\u306e\u95a2\u6570\u306f\u306a\u304f\u3001<strong>sizeof\u6f14\u7b97\u5b50\u3092\u4f7f\u3063\u3066\u8a08\u7b97<\/strong>\u3057\u307e\u3059\u3002\u300csizeof(\u914d\u5217\u540d) \/ sizeof(\u914d\u5217\u540d[0])\u300d\u304c\u5b9a\u756a\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>sizeof\u6f14\u7b97\u5b50<\/strong>\uff1aC\u8a00\u8a9e\u3067\u5909\u6570\u3084\u578b\u306e\u30d0\u30a4\u30c8\u30b5\u30a4\u30ba\u3092\u8fd4\u3059\u6f14\u7b97\u5b50\u3002sizeof(int)\u306f\u74b0\u5883\u306b\u3088\u3063\u30664\u3001sizeof(char)\u306f1\u3001sizeof(double)\u306f8\u306a\u3069\u3002\u914d\u5217\u5168\u4f53\u306b\u5bfe\u3057\u3066\u4f7f\u3046\u3068\u30d0\u30a4\u30c8\u7dcf\u91cf\u304c\u8fd4\u308b\u305f\u3081\u3001\u300c\u914d\u5217\u306e\u8981\u7d20\u6570 = sizeof(arr) \/ sizeof(arr[0])\u300d\u3067\u8a08\u7b97\u3067\u304d\u308b\u3002\u305f\u3060\u3057\u3001\u95a2\u6570\u306b\u914d\u5217\u3092\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6e21\u3057\u305f\u5f8c\u3067sizeof\u3092\u4f7f\u3063\u3066\u3082\u8981\u7d20\u6570\u306f\u5f97\u3089\u308c\u306a\u3044\uff08\u30dd\u30a4\u30f3\u30bf\u306e\u30b5\u30a4\u30ba\u304c\u8fd4\u308b\u305f\u3081\uff09\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#1e1e1e;border-radius:8px;padding:20px 24px;margin:20px 0;overflow-x:auto;\">\n  <div style=\"font-size:11px;color:#888;margin-bottom:8px;text-transform:uppercase;letter-spacing:1px;\">C\u8a00\u8a9e<\/div>\n  <pre style=\"margin:0;font-family:'Courier New',Consolas,monospace;font-size:14px;line-height:1.8;color:#d4d4d4;white-space:pre;\">#include &lt;stdio.h&gt;\n\nint main() {\n    int arr[] = {10, 20, 30, 40, 50};\n\n    \/* sizeof(\u914d\u5217\u5168\u4f53)\u3067\u30d0\u30a4\u30c8\u7dcf\u91cf\u3092\u53d6\u5f97 *\/\n    printf(\"\u914d\u5217\u5168\u4f53\u306e\u30d0\u30a4\u30c8\u6570: %zu\\n\", sizeof(arr));      \/* 20\uff08int 4\u30d0\u30a4\u30c8 \u00d7 5\u8981\u7d20\uff09*\/\n\n    \/* sizeof(\u8981\u7d201\u3064)\u30671\u8981\u7d20\u306e\u30d0\u30a4\u30c8\u6570\u3092\u53d6\u5f97 *\/\n    printf(\"1\u8981\u7d20\u306e\u30d0\u30a4\u30c8\u6570: %zu\\n\", sizeof(arr[0]));     \/* 4 *\/\n\n    \/* \u8981\u7d20\u6570\u306e\u8a08\u7b97 *\/\n    int count = sizeof(arr) \/ sizeof(arr[0]);\n    printf(\"\u8981\u7d20\u6570: %d\\n\", count);  \/* 5 *\/\n\n    \/* \u8981\u7d20\u6570\u3092\u4f7f\u3063\u305f\u30eb\u30fc\u30d7\uff08\u30cf\u30fc\u30c9\u30b3\u30fc\u30c9\u3092\u907f\u3051\u308b\uff09 *\/\n    for (int i = 0; i &lt; count; i++) {\n        printf(\"arr[%d] = %d\\n\", i, arr[i]);\n    }\n\n    return 0;\n}<\/pre>\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\"><span style=\"font-size:18px;\">&#128161;<\/span><strong style=\"color:#16a34a;font-size:15px;\">\u8981\u7d20\u6570\u306e\u30de\u30af\u30ed\u5b9a\u7fa9\u304c\u5b9f\u52d9\u7684<\/strong><\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u5b9f\u969b\u306eC\u8a00\u8a9e\u306e\u30b3\u30fc\u30c9\u3067\u306f\u300c#define ARRAY_SIZE(arr) (sizeof(arr) \/ sizeof((arr)[0]))\u300d\u3068\u3044\u3046\u30de\u30af\u30ed\u3092\u5b9a\u7fa9\u3057\u3066\u4f7f\u3046\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002ARRAY_SIZE(arr)\u3068\u66f8\u304f\u3060\u3051\u3067\u8981\u7d20\u6570\u304c\u53d6\u5f97\u3067\u304d\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u304c\u4e0a\u304c\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/aibpo\/makase\/blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=aibpo_makase\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u793e\u54e1AIKATA\uff08\u670830\u4e07\u5186\u3067\u696d\u52d9\u307e\u304b\u305b\u653e\u984c\uff09\u306e\u7121\u6599\u76f8\u8ac7 \u4e88\u7d04\u30da\u30fc\u30b8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_makase_20260904.jpg\" alt=\"AI\u793e\u54e1AIKATA\uff5c\u670830\u4e07\u5186\u306e\u5b9a\u984d\u3067\u5fa1\u793e\u306e\u696d\u52d9\u3092\u307e\u308b\u3054\u3068\u5dfb\u304d\u53d6\u308a\u307e\u3059\uff08\u7121\u6599\u76f8\u8ac760\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/koteihi-line\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=koteihi_shindan\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u516c\u5f0fLINE\u306e\u56fa\u5b9a\u8cbb\u524a\u6e1b\u8a3a\u65ad\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_koteihi_line.jpg\" alt=\"\u5fa1\u793e\u304c\u6e1b\u3089\u305b\u308b\u56fa\u5b9a\u8cbb\u306f\u6708\u3044\u304f\u3089\u304b\uff5c\u516c\u5f0fLINE\u3067\u8cea\u554f\u306b\u7b54\u3048\u308b\u3060\u3051\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-07\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">07<\/span>\n  <span class=\"section-label\" style=\"display:block;\">ARRAY FUNCTION<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u95a2\u6570\u306e\u5f15\u6570\u306b\u914d\u5217\u3092\u6e21\u3059\u65b9\u6cd5<\/span>\n  <span class=\"section-desc\">\u914d\u5217\u306f\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6e21\u3055\u308c\u308b\u2014\u2014\u8981\u7d20\u6570\u3092\u5225\u306b\u6e21\u3059\u5fc5\u8981\u304c\u3042\u308b\u7406\u7531<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u3067\u914d\u5217\u3092\u95a2\u6570\u306e\u5f15\u6570\u306b\u6e21\u3059\u3068\u3001<strong>\u914d\u5217\u306e\u5024\u304c\u30b3\u30d4\u30fc\u3055\u308c\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u5148\u982d\u8981\u7d20\u306e\u30dd\u30a4\u30f3\u30bf\uff08\u30a2\u30c9\u30ec\u30b9\uff09\u304c\u6e21\u3055\u308c\u307e\u3059<\/strong>\u3002\u3053\u308c\u306f\u91cd\u8981\u306a\u4ed5\u69d8\u3067\u3001\u95a2\u6570\u5185\u3067\u914d\u5217\u306e\u8981\u7d20\u3092\u5909\u66f4\u3059\u308b\u3068\u3001\u547c\u3073\u51fa\u3057\u5143\u306e\u914d\u5217\u3082\u5909\u66f4\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e1e;border-radius:8px;padding:20px 24px;margin:20px 0;overflow-x:auto;\">\n  <div style=\"font-size:11px;color:#888;margin-bottom:8px;text-transform:uppercase;letter-spacing:1px;\">C\u8a00\u8a9e<\/div>\n  <pre style=\"margin:0;font-family:'Courier New',Consolas,monospace;font-size:14px;line-height:1.8;color:#d4d4d4;white-space:pre;\">#include &lt;stdio.h&gt;\n\n\/* \u914d\u5217\u3092\u53d7\u3051\u53d6\u308b\u95a2\u6570\uff08int *arr \u307e\u305f\u306f int arr[]\u3068\u66f8\u304f\uff09 *\/\nvoid printArray(int arr[], int size) {\n    \/* \u6ce8\u610f: \u3053\u3053\u3067sizeof(arr)\u3092\u4f7f\u3046\u3068\u30dd\u30a4\u30f3\u30bf\u306e\u30b5\u30a4\u30ba\uff088\u30d0\u30a4\u30c8\uff09\u304c\u8fd4\u308b *\/\n    \/* \u8981\u7d20\u6570\u306f\u5f15\u6570\u306esize\u3092\u4f7f\u3046\u5fc5\u8981\u304c\u3042\u308b *\/\n    for (int i = 0; i &lt; size; i++) {\n        printf(\"arr[%d] = %d\\n\", i, arr[i]);\n    }\n}\n\n\/* \u914d\u5217\u306e\u5168\u8981\u7d20\u3092\u5408\u8a08\u3059\u308b\u95a2\u6570 *\/\nint sumArray(int arr[], int size) {\n    int total = 0;\n    for (int i = 0; i &lt; size; i++) {\n        total += arr[i];\n    }\n    return total;\n}\n\nint main() {\n    int data[] = {10, 20, 30, 40, 50};\n    int size = sizeof(data) \/ sizeof(data[0]);\n\n    \/* \u914d\u5217\u3068\u8981\u7d20\u6570\u3092\u4e00\u7dd2\u306b\u6e21\u3059\uff08\u30b5\u30a4\u30ba\u3092\u5225\u5f15\u6570\u3067\u6e21\u3059\u306e\u304c\u6163\u7fd2\uff09*\/\n    printArray(data, size);\n    printf(\"\u5408\u8a08: %d\\n\", sumArray(data, size));  \/* 150 *\/\n\n    return 0;\n}<\/pre>\n<\/div>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\"><span style=\"font-size:20px;\">&#9888;&#65039;<\/span><strong style=\"color:#dc2626;font-size:16px;\">\u95a2\u6570\u5185\u3067sizeof\u3092\u914d\u5217\u5f15\u6570\u306b\u4f7f\u3063\u3066\u306f\u3044\u3051\u306a\u3044<\/strong><\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u914d\u5217\u3092\u95a2\u6570\u306e\u5f15\u6570\u306b\u6e21\u3057\u305f\u5f8c\u3001\u95a2\u6570\u5185\u3067sizeof(arr)\u3092\u4f7f\u3063\u3066\u3082\u914d\u5217\u5168\u4f53\u306e\u30b5\u30a4\u30ba\u306f\u5f97\u3089\u308c\u307e\u305b\u3093\u3002\u30dd\u30a4\u30f3\u30bf\u306e\u30b5\u30a4\u30ba\uff0864bit\u74b0\u5883\u3067\u306f8\u30d0\u30a4\u30c8\uff09\u304c\u8fd4\u308b\u3060\u3051\u3067\u3059\u3002\u95a2\u6570\u5185\u3067\u8981\u7d20\u6570\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u5fc5\u305a\u8981\u7d20\u6570\u3092\u5225\u306e\u5f15\u6570\uff08int size\uff09\u3068\u3057\u3066\u6e21\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306fC\u8a00\u8a9e\u3092\u5b66\u3076\u4eba\u304c\u6700\u3082\u3088\u304f\u8aa4\u89e3\u3059\u308b\u30dd\u30a4\u30f3\u30c8\u306e\u4e00\u3064\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\"><strong>\u914d\u5217\u3092\u5ba3\u8a00<\/strong><br><span style=\"font-size:12px;\">int arr[5] = {10,...}<br>\u547c\u3073\u51fa\u3057\u5143\u3067\u521d\u671f\u5316<\/span><\/div>  <div class=\"g-flow-arrow\">&#8594;<\/div>  <div class=\"g-flow-item\"><strong>\u8981\u7d20\u6570\u3092\u8a08\u7b97<\/strong><br><span style=\"font-size:12px;\">sizeof(arr)\/sizeof(arr[0])<br>\u547c\u3073\u51fa\u3057\u5143\u3067\u30ab\u30a6\u30f3\u30c8<\/span><\/div>  <div class=\"g-flow-arrow\">&#8594;<\/div>  <div class=\"g-flow-item\"><strong>\u95a2\u6570\u306b\u6e21\u3059<\/strong><br><span style=\"font-size:12px;\">printArray(arr, size)<br>\u914d\u5217\u540d+\u8981\u7d20\u6570\u3092\u6e21\u3059<\/span><\/div>  <div class=\"g-flow-arrow\">&#8594;<\/div>  <div class=\"g-flow-item\"><strong>\u95a2\u6570\u5185\u3067\u51e6\u7406<\/strong><br><span style=\"font-size:12px;\">arr[]\u3092\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a<br>size\u3067\u30eb\u30fc\u30d7\u7bc4\u56f2\u3092\u5236\u5fa1<\/span><\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/aibpo\/makase\/blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=aibpo_makase\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u793e\u54e1AIKATA\uff08\u670830\u4e07\u5186\u3067\u696d\u52d9\u307e\u304b\u305b\u653e\u984c\uff09\u306e\u7121\u6599\u76f8\u8ac7 \u4e88\u7d04\u30da\u30fc\u30b8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_makase_20260904.jpg\" alt=\"AI\u793e\u54e1AIKATA\uff5c\u670830\u4e07\u5186\u306e\u5b9a\u984d\u3067\u5fa1\u793e\u306e\u696d\u52d9\u3092\u307e\u308b\u3054\u3068\u5dfb\u304d\u53d6\u308a\u307e\u3059\uff08\u7121\u6599\u76f8\u8ac760\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/koteihi-line\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=koteihi_shindan\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u516c\u5f0fLINE\u306e\u56fa\u5b9a\u8cbb\u524a\u6e1b\u8a3a\u65ad\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_koteihi_line.jpg\" alt=\"\u5fa1\u793e\u304c\u6e1b\u3089\u305b\u308b\u56fa\u5b9a\u8cbb\u306f\u6708\u3044\u304f\u3089\u304b\uff5c\u516c\u5f0fLINE\u3067\u8cea\u554f\u306b\u7b54\u3048\u308b\u3060\u3051\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-08\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">08<\/span>\n  <span class=\"section-label\" style=\"display:block;\">MULTIDIM ARRAY<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u591a\u6b21\u5143\u914d\u5217\u306e\u5ba3\u8a00\u3068\u4f7f\u3044\u65b9<\/span>\n  <span class=\"section-desc\">\u884c\u00d7\u5217\u306e2\u6b21\u5143\u914d\u5217\u3092\u4f7f\u3063\u305f\u884c\u5217\u30fb\u8868\u5f62\u5f0f\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u3092\u89e3\u8aac<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u3067\u306f<strong>2\u6b21\u5143\u30fb3\u6b21\u5143\u306a\u3069\u591a\u6b21\u5143\u306e\u914d\u5217<\/strong>\u3092\u6271\u3048\u307e\u3059\u30022\u6b21\u5143\u914d\u5217\u306f\u884c\u3068\u5217\u3092\u6301\u3064\u8868\u5f62\u5f0f\u306e\u30c7\u30fc\u30bf\u306b\u5bfe\u5fdc\u3057\u3001\u6570\u5b66\u306e\u884c\u5217\u3084\u753b\u50cf\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u306b\u3082\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e1e;border-radius:8px;padding:20px 24px;margin:20px 0;overflow-x:auto;\">\n  <div style=\"font-size:11px;color:#888;margin-bottom:8px;text-transform:uppercase;letter-spacing:1px;\">C\u8a00\u8a9e<\/div>\n  <pre style=\"margin:0;font-family:'Courier New',Consolas,monospace;font-size:14px;line-height:1.8;color:#d4d4d4;white-space:pre;\">#include &lt;stdio.h&gt;\n\nint main() {\n    \/* 2\u6b21\u5143\u914d\u5217\u306e\u5ba3\u8a00: [\u884c\u6570][\u5217\u6570] *\/\n    int matrix[3][4] = {\n        {1,  2,  3,  4},   \/* 0\u884c\u76ee *\/\n        {5,  6,  7,  8},   \/* 1\u884c\u76ee *\/\n        {9, 10, 11, 12}    \/* 2\u884c\u76ee *\/\n    };\n\n    \/* 2\u91cd\u30eb\u30fc\u30d7\u3067\u5168\u8981\u7d20\u3092\u51e6\u7406 *\/\n    int rows = 3;\n    int cols = 4;\n    for (int r = 0; r &lt; rows; r++) {\n        for (int c = 0; c &lt; cols; c++) {\n            printf(\"%3d\", matrix[r][c]);\n        }\n        printf(\"\\n\");\n    }\n\n    \/* \u7279\u5b9a\u306e\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9 *\/\n    printf(\"matrix[1][2] = %d\\n\", matrix[1][2]);  \/* 7 *\/\n\n    return 0;\n}<\/pre>\n<\/div>\n\n\n\n<table>\n<thead><tr><th>\u6b21\u5143\u6570<\/th><th>\u5ba3\u8a00\u65b9\u6cd5<\/th><th>\u4f7f\u7528\u30b7\u30fc\u30f3<\/th><th>\u6ce8\u610f\u70b9<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>1\u6b21\u5143\u914d\u5217<\/td><td>int arr[5]<\/td><td>\u30ea\u30b9\u30c8\u30fb\u6570\u5217<\/td><td>\u6700\u3082\u3088\u304f\u4f7f\u3046<\/td><\/tr>\n<tr><td>2\u6b21\u5143\u914d\u5217<\/td><td>int arr[3][4]<\/td><td>\u884c\u5217\u30fb\u8868\u30fb\u753b\u50cf\u30d4\u30af\u30bb\u30eb<\/td><td>\u30e1\u30e2\u30ea\u306f\u884c\u512a\u5148\u3067\u9023\u7d9a\u914d\u7f6e<\/td><\/tr>\n<tr><td>3\u6b21\u5143\u914d\u5217<\/td><td>int arr[2][3][4]<\/td><td>\u7acb\u4f53\u30c7\u30fc\u30bf\u30fbRGB\u753b\u50cf<\/td><td>\u30cd\u30b9\u30c8\u304c\u6df1\u304f\u306a\u308a\u8907\u96d1<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/aibpo\/makase\/blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=aibpo_makase\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u793e\u54e1AIKATA\uff08\u670830\u4e07\u5186\u3067\u696d\u52d9\u307e\u304b\u305b\u653e\u984c\uff09\u306e\u7121\u6599\u76f8\u8ac7 \u4e88\u7d04\u30da\u30fc\u30b8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_makase_20260904.jpg\" alt=\"AI\u793e\u54e1AIKATA\uff5c\u670830\u4e07\u5186\u306e\u5b9a\u984d\u3067\u5fa1\u793e\u306e\u696d\u52d9\u3092\u307e\u308b\u3054\u3068\u5dfb\u304d\u53d6\u308a\u307e\u3059\uff08\u7121\u6599\u76f8\u8ac760\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/koteihi-line\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-array&#038;blog_slug=cc-c-array&#038;blog_title=%E3%80%902026%E5%B9%B48%E6%9C%88%E6%9C%80%E6%96%B0%E3%80%91C%E8%A8%80%E8%AA%9E%E3%81%AE%E9%85%8D%E5%88%97%E5%AE%8C%E5%85%A8%E3%82%AC%E3%82%A4%E3%83%89%EF%BD%9C%E5%AE%A3%E8%A8%80%E3%83%BB%E5%88%9D%E6%9C%9F%E5%8C%96%E3%83%BB%E3%83%9D%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%BB%E5%A4%9A%E6%AC%A1%E5%85%83%E9%85%8D%E5%88%97%E3%83%BBClaude%20Code%E6%B4%BB%E7%94%A8%E6%B3%95&#038;blog_url=https%3A%2F%2Fgenai-ai.co.jp%2Fai-kanri%2Fblog%2Fcc-c-array%2F&#038;utm_campaign=koteihi_shindan\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u516c\u5f0fLINE\u306e\u56fa\u5b9a\u8cbb\u524a\u6e1b\u8a3a\u65ad\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/09\/cta_blog_koteihi_line.jpg\" alt=\"\u5fa1\u793e\u304c\u6e1b\u3089\u305b\u308b\u56fa\u5b9a\u8cbb\u306f\u6708\u3044\u304f\u3089\u304b\uff5c\u516c\u5f0fLINE\u3067\u8cea\u554f\u306b\u7b54\u3048\u308b\u3060\u3051\uff08\u7121\u6599\u30fb\u7d041\u5206\uff09\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-09\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">09<\/span>\n  <span class=\"section-label\" style=\"display:block;\">CLAUDE CODE C<\/span>\n  <span class=\"section-title\" style=\"display:block;\">Claude Code\u3067C\u8a00\u8a9e\u306e\u914d\u5217\u30b3\u30fc\u30c9\u3092\u81ea\u52d5\u751f\u6210\u3059\u308b<\/span>\n  <span class=\"section-desc\">C\u8a00\u8a9e\u306e\u8907\u96d1\u306a\u914d\u5217\u51e6\u7406\u3082AI\u306b\u4f9d\u983c\u3059\u308c\u3070\u6570\u5206\u3067\u5b8c\u6210<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u306e\u914d\u5217\u306f\u30dd\u30a4\u30f3\u30bf\u30fb\u30e1\u30e2\u30ea\u7ba1\u7406\u30fbNULL\u7d42\u7aef\u306a\u3069\u3001\u899a\u3048\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u30b3\u30fc\u30c9\u3092\u66f8\u304d\u6163\u308c\u308b\u307e\u3067\u6642\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u30022026\u5e74\u73fe\u5728\u3001<strong>Claude Code\u3092\u4f7f\u3048\u3070C\u8a00\u8a9e\u306e\u914d\u5217\u51e6\u7406\u30b3\u30fc\u30c9\u3092\u81ea\u7136\u8a00\u8a9e\u3067\u6307\u793a\u3057\u3066\u81ea\u52d5\u751f\u6210<\/strong>\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u3042\u306a\u305f\u306e\u6307\u793a<\/th><th>Claude Code\u304c\u751f\u6210\u3059\u308b\u3082\u306e<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u300c5\u3064\u306eint\u3092\u683c\u7d0d\u3059\u308b\u914d\u5217\u3092\u5ba3\u8a00\u3057\u3066\u5168\u8981\u7d20\u3092\u5408\u8a08\u3059\u308bC\u8a00\u8a9e\u30b3\u30fc\u30c9\u300d<\/td><td>\u5ba3\u8a00\u30fb\u521d\u671f\u5316\u30fb\u30eb\u30fc\u30d7\u30fb\u5408\u8a08\u51e6\u7406\u306eC\u30b3\u30fc\u30c9\uff08\u30b3\u30f3\u30d1\u30a4\u30eb\u53ef\u80fd\uff09<\/td><\/tr>\n<tr><td>\u300c\u6574\u6570\u914d\u5217\u3092\u5f15\u6570\u3067\u53d7\u3051\u53d6\u308a\u6700\u5927\u5024\u3068\u6700\u5c0f\u5024\u3092\u8fd4\u3059C\u8a00\u8a9e\u95a2\u6570\u300d<\/td><td>\u30dd\u30a4\u30f3\u30bf\u5f15\u6570\u3067\u8907\u6570\u5024\u3092\u8fd4\u3059\u95a2\u6570\u306e\u30b3\u30fc\u30c9<\/td><\/tr>\n<tr><td>\u300c\u3053\u306eC\u30b3\u30fc\u30c9\u306esegmentation fault\u306e\u539f\u56e0\u3092\u6559\u3048\u3066\uff08\u30b3\u30fc\u30c9\u3092\u8cbc\u308a\u4ed8\u3051\uff09\u300d<\/td><td>\u30d0\u30c3\u30d5\u30a1\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u3084NULL\u53c2\u7167\u306a\u3069\u306e\u30d0\u30b0\u539f\u56e0\u306e\u8aac\u660e\u3068\u4fee\u6b63<\/td><\/tr>\n<tr><td>\u300c3\u00d74\u306e2\u6b21\u5143\u914d\u5217\u3092\u5f15\u6570\u306b\u53d7\u3051\u53d6\u3063\u3066\u5404\u884c\u306e\u5408\u8a08\u3092\u8868\u793a\u3059\u308bC\u8a00\u8a9e\u30b3\u30fc\u30c9\u300d<\/td><td>2\u6b21\u5143\u914d\u5217\u30fb\u95a2\u6570\u5f15\u6570\u30fb\u30eb\u30fc\u30d7\u51e6\u7406\u306eC\u30b3\u30fc\u30c9<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>C\u8a00\u8a9e\u306e\u914d\u5217\u30b3\u30fc\u30c9\u3092<strong>\u65e5\u672c\u8a9e\u3067\u4f9d\u983c\u3057\u3066\u81ea\u52d5\u751f\u6210<\/strong><\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>segmentation fault\u7b49\u306e\u30a8\u30e9\u30fc<\/strong>\u306e\u30b3\u30fc\u30c9\u3092\u8cbc\u308a\u4ed8\u3051\u3066\u539f\u56e0\u89e3\u660e<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>memcpy\u30fbstrncpy\u7b49\u306e\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u95a2\u6570<\/strong>\u306e\u4f7f\u3044\u65b9\u3092\u5177\u4f53\u4f8b\u4ed8\u304d\u3067\u8cea\u554f<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u300c\u3053\u306e\u30b3\u30fc\u30c9\u306b\u8981\u7d20\u6570\u30c1\u30a7\u30c3\u30af\uff08\u5883\u754c\u5916\u30a2\u30af\u30bb\u30b9\u9632\u6b62\uff09\u3092\u8ffd\u52a0\u3057\u3066\u300d\u3068<strong>\u5b89\u5168\u6027\u6539\u5584<\/strong>\u3092\u4f9d\u983c<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>C\u8a00\u8a9e\u3067\u66f8\u3044\u305f\u30b3\u30fc\u30c9\u3092<strong>Python\u306b\u5909\u63db<\/strong>\u3057\u3066\u3082\u3089\u3046\u306a\u3069\u8a00\u8a9e\u9593\u306e\u79fb\u690d\u3082\u53ef\u80fd<\/span><\/div>\n\n<\/div>\n\n\n\n<div style=\"background:linear-gradient(135deg,#1a1a1a,#2a1015);border-radius:12px;padding:20px 24px;margin:24px 0;display:flex;align-items:center;gap:16px;color:#fff;\">\n  <span style=\"font-size:36px;\">&#127942;<\/span>\n  <div>\n    <div style=\"font-size:13px;color:#dc2626;font-weight:700;letter-spacing:1px;\">VERDICT<\/div>\n    <div style=\"font-size:18px;font-weight:800;\">C\u8a00\u8a9e\u306e\u5b66\u7fd2\u306bClaude Code\u3092\u6d3b\u7528\u3059\u308b<\/div>\n    <div style=\"font-size:14px;color:rgba(255,255,255,0.7);margin-top:4px;\">C\u8a00\u8a9e\u306f\u30dd\u30a4\u30f3\u30bf\u30fb\u30e1\u30e2\u30ea\u7ba1\u7406\u306a\u3069\u4ed6\u8a00\u8a9e\u3088\u308a\u8907\u96d1\u306a\u6982\u5ff5\u304c\u591a\u3044\u3002Claude Code\u3092\u4f7f\u3048\u3070\u300c\u306a\u305c\u3053\u3046\u66f8\u304f\u306e\u304b\u300d\u3092\u65e5\u672c\u8a9e\u3067\u8cea\u554f\u3057\u306a\u304c\u3089\u30b3\u30fc\u30c9\u3092\u751f\u6210\u3067\u304d\u308b\u3002\u30a8\u30e9\u30fc\u306e\u30c7\u30d0\u30c3\u30b0\u3082\u300c\u3053\u306e\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u4f55\u304c\u539f\u56e0\u304b\u300d\u3068\u805e\u304f\u3060\u3051\u3067\u89e3\u8aac\u3057\u3066\u304f\u308c\u308b\u3002<\/div>\n  <\/div>\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u5f0a\u793e\u3067C\u8a00\u8a9e\u5b66\u7fd2\u306e\u652f\u63f4\u3092\u3059\u308b\u5834\u5408\u3001\u300c\u307e\u305aClaude Code\u3067\u52d5\u304f\u30b3\u30fc\u30c9\u3092\u751f\u6210\u3057\u3066\u3082\u3089\u3044\u3001\u305d\u308c\u3092\u8aad\u3093\u3067\u7406\u89e3\u3059\u308b\u300d\u3068\u3044\u3046\u5b66\u7fd2\u30b9\u30bf\u30a4\u30eb\u3092\u63a8\u5968\u3057\u3066\u3044\u307e\u3059\u3002\u3044\u304d\u306a\u308a\u30bc\u30ed\u304b\u3089\u66f8\u304f\u3088\u308a\u3082\u3001\u6b63\u3057\u3044\u30b3\u30fc\u30c9\u3092\u8aad\u3093\u3067\u7406\u89e3\u3059\u308b\u65b9\u304c\u5b66\u7fd2\u52b9\u7387\u304c\u9ad8\u3044\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">C\u8a00\u8a9e\u306e\u914d\u5217\u3082Claude Code\u3067\u52b9\u7387\u7684\u306b\u5b66\u3079\u307e\u3059<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cC\u8a00\u8a9e\u306e\u914d\u5217\u3067\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u89e3\u6c7a\u3067\u304d\u306a\u3044\u300d\u300c\u30dd\u30a4\u30f3\u30bf\u3068\u914d\u5217\u306e\u95a2\u4fc2\u304c\u7406\u89e3\u3067\u304d\u306a\u3044\u300d\u2014\u2014\u3053\u3046\u3057\u305fC\u8a00\u8a9e\u306e\u8ab2\u984c\u306fClaude Code\u3067\u89e3\u6c7a\u3067\u304d\u307e\u3059\u3002\u30b3\u30fc\u30c9\u3092\u898b\u305b\u308b\u3060\u3051\u3067\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3068\u4fee\u6b63\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305a\u306f\u7121\u6599\u76f8\u8ac7\u3067\u3001\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5b66\u7fd2\u30fb\u696d\u52d9\u81ea\u52d5\u5316\u306e\u8ab2\u984c\u3092\u30d2\u30a2\u30ea\u30f3\u30b0\u3055\u305b\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<div style=\"background:#fff;border:2px solid #eee;border-radius:16px;padding:32px 20px;margin:48px 0 16px;\">\n  <p style=\"text-align:center;font-size:13px;font-weight:700;color:#dc2626;letter-spacing:2px;margin:0 0 12px;\">NEXT STEP<\/p>\n  <p style=\"text-align:center;font-size:22px;font-weight:800;line-height:1.5;color:#1a1a1a;margin:0 0 24px;\">\u3053\u306e\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u3001\u3042\u306a\u305f\u306e\u30d3\u30b8\u30cd\u30b9\u3067<br>\u5b9f\u8df5\u3057\u3066\u307f\u307e\u305b\u3093\u304b\uff1f<\/p>\n  <div style=\"display:flex;gap:16px;flex-wrap:wrap;justify-content:center;\">\n    <div style=\"flex:1 1 300px;max-width:560px;background:#fafafa;border:1px solid #eee;border-radius:12px;overflow:hidden;display:flex;flex-direction:column;\">\n      <img src=\"https:\/\/genai-ai.co.jp\/img\/flagship-onikanri.png\" alt=\"AI\u9b3c\u7ba1\u7406 \u2014 Claude Code\u5c0e\u5165\u652f\u63f4\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\" loading=\"lazy\" decoding=\"async\" style=\"width:100%;height:auto;aspect-ratio:16\/9;object-fit:cover;display:block;\">\n      <div style=\"padding:20px 20px 24px;display:flex;flex-direction:column;flex:1;\">\n        <p style=\"font-size:13px;color:#dc2626;font-weight:700;margin:0 0 8px;\">AI\u6d3b\u7528\u3092\u81ea\u793e\u3067\u56de\u305b\u308b\u3088\u3046\u306b\u306a\u308a\u305f\u3044\u65b9\u3078<\/p>\n        <p style=\"font-size:20px;font-weight:800;color:#1a1a1a;margin:0 0 12px;\">AI\u9b3c\u7ba1\u7406<\/p>\n        <p style=\"font-size:14px;color:#555;margin:0 0 20px;line-height:1.7;\">Claude Code\u30fbCowork\u5c0e\u5165\u652f\u63f4\u304b\u3089\u696d\u52d9\u8a2d\u8a08\u30fb\u793e\u5185\u6d78\u900f\u307e\u3067\u5b9f\u8df5\u30d9\u30fc\u30b9\u3067\u4f34\u8d70\u3002\u300c\u81ea\u793e\u3067\u56de\u305b\u308b\u7d44\u7e54\u300d\u309290\u65e5\u3067\u4f5c\u308b\u7d4c\u55b6\u8005\u5411\u3051\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3002<\/p>\n        <div style=\"text-align:center;margin-top:auto;\">\n          <a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=article&utm_campaign=cc-c-array&utm_content=next-step-cta\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#dc2626;color:#fff;font-weight:700;font-size:15px;padding:14px 32px;border-radius:30px;text-decoration:none;\">AI\u9b3c\u7ba1\u7406\u3092\u8a73\u3057\u304f\u898b\u308b \u2192<\/a>\n        <\/div>\n      <\/div>\n    <\/div>\n    <div style=\"flex:1 1 300px;max-width:560px;background:#fafafa;border:1px solid #eee;border-radius:12px;overflow:hidden;display:flex;flex-direction:column;\">\n      <img src=\"https:\/\/genai-ai.co.jp\/img\/flagship-aibpo.png\" alt=\"AI\u793e\u54e1AIKATA \u2014 \u5b9a\u578b\u696d\u52d9\u306e\u4e38\u3054\u3068\u4ee3\u884c\" loading=\"lazy\" decoding=\"async\" style=\"width:100%;height:auto;aspect-ratio:16\/9;object-fit:cover;display:block;\">\n      <div style=\"padding:20px 20px 24px;display:flex;flex-direction:column;flex:1;\">\n        <p style=\"font-size:13px;color:#dc2626;font-weight:700;margin:0 0 8px;\">\u696d\u52d9\u3092\u4e38\u3054\u3068\u4efb\u305b\u305f\u3044\u65b9\u3078<\/p>\n        <p style=\"font-size:20px;font-weight:800;color:#1a1a1a;margin:0 0 12px;\">AI\u793e\u54e1AIKATA<\/p>\n        <p style=\"font-size:14px;color:#555;margin:0 0 20px;line-height:1.7;\">\u8acb\u6c42\u51e6\u7406\u30fb\u30c7\u30fc\u30bf\u5165\u529b\u30fb\u554f\u3044\u5408\u308f\u305b\u5bfe\u5fdc\u306a\u3069\u306e\u5b9a\u578b\u696d\u52d9\u3092\u3001AI\u00d7\u4eba\u306e\u54c1\u8cea\u7ba1\u7406\u4f53\u5236\u3067\u4e38\u3054\u3068\u4ee3\u884c\u3002\u670830\u4e07\u5186\u306e\u5b9a\u984d\u3067\u307e\u304b\u305b\u653e\u984c\u3001\u65e5\u3005\u306f\u6210\u679c\u7269\u3092\u627f\u8a8d\u3059\u308b\u3060\u3051\u3002<\/p>\n        <div style=\"text-align:center;margin-top:auto;\">\n          <a href=\"https:\/\/genai-ai.co.jp\/ai-kanri\/ai-bpo\/?utm_source=blog&utm_medium=article&utm_campaign=cc-c-array&utm_content=next-step-cta-bpo\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#dc2626;color:#fff;font-weight:700;font-size:15px;padding:14px 32px;border-radius:30px;text-decoration:none;\">AI\u793e\u54e1AIKATA\u3092\u8a73\u3057\u304f\u898b\u308b \u2192<\/a>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Q. C\u8a00\u8a9e\u3067\u914d\u5217\u3092\u5ba3\u8a00\u30fb\u521d\u671f\u5316\u3059\u308b\u65b9\u6cd5\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. C\u8a00\u8a9e\u306e\u914d\u5217\u5ba3\u8a00\u306f\u300cint arr[5];\u300d\uff085\u8981\u7d20\u306eint\u578b\u914d\u5217\uff09\u3067\u3059\u3002\u521d\u671f\u5316\u306f\u5ba3\u8a00\u3068\u540c\u6642\u306b\u300cint arr[5] = {10, 20, 30, 40, 50};\u300d\u3068\u66f8\u304d\u307e\u3059\u3002\u8981\u7d20\u6570\u3092\u7701\u7565\u3057\u3066\u300cint arr[] = {10, 20, 30};\u300d\u3068\u66f8\u304f\u3068\u81ea\u52d5\u30673\u8981\u7d20\u306e\u914d\u5217\u306b\u306a\u308a\u307e\u3059\u3002\u5168\u8981\u7d20\u30920\u306b\u3057\u305f\u3044\u5834\u5408\u306f\u300cint arr[5] = {0};\u300d\u304c\u6700\u3082\u7c21\u5358\u3067\u3059\u3002\u5ba3\u8a00\u5f8c\u306b\u500b\u5225\u306b\u4ee3\u5165\u3059\u308b\u5834\u5408\u306f\u300carr[0] = 10; arr[1] = 20;\u300d\u306e\u3088\u3046\u306b\u66f8\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. C\u8a00\u8a9e\u3067\u914d\u5217\u3092\u30b3\u30d4\u30fc\u3059\u308b\u65b9\u6cd5\u306f\uff1f=\u6f14\u7b97\u5b50\u3067\u306f\u99c4\u76ee\u306a\u306e\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u306f\u3044\u3001C\u8a00\u8a9e\u3067\u306f\u300cdst = src;\u300d\u306e\u3088\u3046\u306b=\u6f14\u7b97\u5b50\u3067\u914d\u5217\u3092\u30b3\u30d4\u30fc\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\uff08\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\uff09\u3002\u914d\u5217\u306e\u30b3\u30d4\u30fc\u306b\u306fmemcpy\u95a2\u6570\uff08string.h\u3092include\uff09\u3092\u4f7f\u3044\u307e\u3059\u3002\u300cmemcpy(dst, src, sizeof(int) * \u8981\u7d20\u6570)\u300d\u306e\u5f62\u3067\u66f8\u304d\u307e\u3059\u3002\u6587\u5b57\u5217\uff08char\u914d\u5217\uff09\u306e\u30b3\u30d4\u30fc\u306b\u306fstrncpy\u95a2\u6570\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. C\u8a00\u8a9e\u3067\u914d\u5217\u306e\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. C\u8a00\u8a9e\u306b\u306f\u914d\u5217\u306e\u8981\u7d20\u6570\u3092\u8fd4\u3059\u7d44\u307f\u8fbc\u307f\u95a2\u6570\u304c\u306a\u3044\u305f\u3081\u3001sizeof\u6f14\u7b97\u5b50\u3067\u8a08\u7b97\u3057\u307e\u3059\u3002\u300csizeof(arr) \/ sizeof(arr[0])\u300d\u3067\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u306e\u65b9\u6cd5\u306f\u914d\u5217\u5909\u6570\u306b\u5bfe\u3057\u3066\u306e\u307f\u6709\u52b9\u3067\u3059\u3002\u95a2\u6570\u306e\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u3063\u305f\u914d\u5217\uff08\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6e21\u3055\u308c\u308b\uff09\u306b\u5bfe\u3057\u3066sizeof\u3092\u4f7f\u3063\u3066\u3082\u6b63\u3057\u3044\u8981\u7d20\u6570\u306f\u8fd4\u308a\u307e\u305b\u3093\u3002\u95a2\u6570\u306b\u914d\u5217\u3092\u6e21\u3059\u5834\u5408\u306f\u3001\u8981\u7d20\u6570\u3092\u5225\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. C\u8a00\u8a9e\u306e\u914d\u5217\u3068\u30dd\u30a4\u30f3\u30bf\u306e\u95a2\u4fc2\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. C\u8a00\u8a9e\u3067\u306f\u914d\u5217\u540d\u306f\u305d\u306e\u5148\u982d\u8981\u7d20\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u8868\u3059\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002\u300cint arr[5]\u300d\u306e\u5834\u5408\u3001arr\u3068\u66f8\u304f\u3060\u3051\u3067arr[0]\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u3059\u30dd\u30a4\u30f3\u30bf\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u300cint *p = arr;\u300d\u3068\u66f8\u3044\u3066\u30dd\u30a4\u30f3\u30bf\u5909\u6570p\u306b\u914d\u5217\u3092\u4ee3\u5165\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u300carr[i]\u300d\u3068\u300c*(arr+i)\u300d\u306f\u540c\u3058\u610f\u5473\u3067\u3059\u3002\u95a2\u6570\u306b\u914d\u5217\u3092\u6e21\u3059\u3068\u304d\u3082\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6e21\u3055\u308c\u308b\u305f\u3081\u3001\u95a2\u6570\u5185\u3067\u914d\u5217\u306e\u8981\u7d20\u3092\u5909\u66f4\u3059\u308b\u3068\u547c\u3073\u51fa\u3057\u5143\u306e\u914d\u5217\u3082\u5909\u66f4\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. C\u8a00\u8a9e\u306echar\u914d\u5217\u3067\u6587\u5b57\u5217\u3092\u6271\u3046\u65b9\u6cd5\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. C\u8a00\u8a9e\u306b\u306f\u6587\u5b57\u5217\u5c02\u7528\u306e\u578b\u304c\u306a\u304f\u3001char\u578b\u306e\u914d\u5217\u3067\u6587\u5b57\u5217\u3092\u8868\u73fe\u3057\u307e\u3059\u3002\u300cchar str[10] = \"Hello\";\u300d\u3068\u66f8\u304f\u3068\u3001\u6587\u5b57\u5217Hello\u306e\u5f8c\u306bNULL\u7d42\u7aef\u6587\u5b57(\\0)\u304c\u81ea\u52d5\u3067\u4ed8\u3044\u305f\u914d\u5217\u304c\u4f5c\u3089\u308c\u307e\u3059\u3002\u914d\u5217\u306e\u30b5\u30a4\u30ba\u306fNULL\u7d42\u7aef\u6587\u5b57\u5206+1\u30d0\u30a4\u30c8\u4ee5\u4e0a\u304c\u5fc5\u8981\u3067\u3059\u3002\u6587\u5b57\u5217\u306e\u30b3\u30d4\u30fc\u306b\u306fstrncpy(dst, src, sizeof(dst)-1)\u3092\u4f7f\u3044\u3001\u672b\u5c3e\u306b\u624b\u52d5\u3067NULL\u3092\u4ed8\u3051\u308b\u3068\u5b89\u5168\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. C\u8a00\u8a9e\u306e2\u6b21\u5143\u914d\u5217\u306e\u4f7f\u3044\u65b9\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. 2\u6b21\u5143\u914d\u5217\u306f\u300cint arr[\u884c\u6570][\u5217\u6570]\u300d\u3067\u5ba3\u8a00\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u300cint matrix[3][4]\u300d\u306f3\u884c4\u5217\u306eint\u578b\u914d\u5217\u3067\u3059\u3002\u521d\u671f\u5316\u306f\u300c{{1,2,3,4},{5,6,7,8},{9,10,11,12}}\u300d\u306e\u3088\u3046\u306b\u884c\u3054\u3068\u306b\u4e2d\u62ec\u5f27\u3067\u533a\u5207\u308a\u307e\u3059\u3002\u30a2\u30af\u30bb\u30b9\u306f\u300cmatrix[\u884c][\u5217]\u300d\u306e\u5f62\u3067\u884c\u3044\u307e\u3059\u3002\u5168\u8981\u7d20\u3092\u51e6\u7406\u3059\u308b\u306b\u306f2\u91cdfor\u30eb\u30fc\u30d7\u3092\u4f7f\u3044\u307e\u3059\u3002\u95a2\u6570\u306b2\u6b21\u5143\u914d\u5217\u3092\u6e21\u3059\u5834\u5408\u306f\u300cvoid func(int arr[][4], int rows)\u300d\u306e\u3088\u3046\u306b\u5217\u6570\u3092\u660e\u793a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. C\u8a00\u8a9e\u306e\u914d\u5217\u30b3\u30fc\u30c9\u3092Claude Code\u3067\u751f\u6210\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u3067\u304d\u307e\u3059\u3002\u300c5\u8981\u7d20\u306eint\u914d\u5217\u3092\u5ba3\u8a00\u3057\u3066\u5168\u8981\u7d20\u306e\u5408\u8a08\u3092\u51fa\u529b\u3059\u308bC\u8a00\u8a9e\u30b3\u30fc\u30c9\u300d\u306e\u3088\u3046\u306b\u65e5\u672c\u8a9e\u3067\u8aac\u660e\u3059\u308b\u3060\u3051\u3067\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u53ef\u80fd\u306aC\u30b3\u30fc\u30c9\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002segmentation fault\u7b49\u306e\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3068\u554f\u984c\u306e\u30b3\u30fc\u30c9\u3092\u8cbc\u308a\u4ed8\u3051\u3066\u300c\u539f\u56e0\u3068\u4fee\u6b63\u65b9\u6cd5\u3092\u6559\u3048\u3066\u300d\u3068\u4f9d\u983c\u3059\u308b\u4f7f\u3044\u65b9\u3082\u52b9\u679c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"C\u8a00\u8a9e\u3067\u914d\u5217\u3092\u5ba3\u8a00\u30fb\u521d\u671f\u5316\u3059\u308b\u65b9\u6cd5\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"C\u8a00\u8a9e\u306e\u914d\u5217\u5ba3\u8a00\u306f\u300cint arr[5];\u300d\uff085\u8981\u7d20\u306eint\u578b\u914d\u5217\uff09\u3067\u3059\u3002\u521d\u671f\u5316\u306f\u5ba3\u8a00\u3068\u540c\u6642\u306b\u300cint arr[5] = {10, 20, 30, 40, 50};\u300d\u3068\u66f8\u304d\u307e\u3059\u3002\u8981\u7d20\u6570\u3092\u7701\u7565\u3057\u3066\u300cint arr[] = {10, 20, 30};\u300d\u3068\u66f8\u304f\u3068\u81ea\u52d5\u30673\u8981\u7d20\u306e\u914d\u5217\u306b\u306a\u308a\u307e\u3059\u3002\u5168\u8981\u7d20\u30920\u306b\u3057\u305f\u3044\u5834\u5408\u306f\u300cint arr[5] = {0};\u300d\u304c\u6700\u3082\u7c21\u5358\u3067\u3059\u3002\u5ba3\u8a00\u5f8c\u306b\u500b\u5225\u306b\u4ee3\u5165\u3059\u308b\u5834\u5408\u306f\u300carr[0] = 10; arr[1] = 20;\u300d\u306e\u3088\u3046\u306b\u66f8\u304d\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"C\u8a00\u8a9e\u3067\u914d\u5217\u3092\u30b3\u30d4\u30fc\u3059\u308b\u65b9\u6cd5\u306f\uff1f=\u6f14\u7b97\u5b50\u3067\u306f\u99c4\u76ee\u306a\u306e\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u306f\u3044\u3001C\u8a00\u8a9e\u3067\u306f\u300cdst = src;\u300d\u306e\u3088\u3046\u306b=\u6f14\u7b97\u5b50\u3067\u914d\u5217\u3092\u30b3\u30d4\u30fc\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\uff08\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\uff09\u3002\u914d\u5217\u306e\u30b3\u30d4\u30fc\u306b\u306fmemcpy\u95a2\u6570\uff08string.h\u3092include\uff09\u3092\u4f7f\u3044\u307e\u3059\u3002\u300cmemcpy(dst, src, sizeof(int) * \u8981\u7d20\u6570)\u300d\u306e\u5f62\u3067\u66f8\u304d\u307e\u3059\u3002\u6587\u5b57\u5217\uff08char\u914d\u5217\uff09\u306e\u30b3\u30d4\u30fc\u306b\u306fstrncpy\u95a2\u6570\u304c\u5b89\u5168\u3067\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"C\u8a00\u8a9e\u3067\u914d\u5217\u306e\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"C\u8a00\u8a9e\u306b\u306f\u914d\u5217\u306e\u8981\u7d20\u6570\u3092\u8fd4\u3059\u7d44\u307f\u8fbc\u307f\u95a2\u6570\u304c\u306a\u3044\u305f\u3081\u3001sizeof\u6f14\u7b97\u5b50\u3067\u8a08\u7b97\u3057\u307e\u3059\u3002\u300csizeof(arr) \/ sizeof(arr[0])\u300d\u3067\u8981\u7d20\u6570\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u306e\u65b9\u6cd5\u306f\u914d\u5217\u5909\u6570\u306b\u5bfe\u3057\u3066\u306e\u307f\u6709\u52b9\u3067\u3059\u3002\u95a2\u6570\u306e\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u3063\u305f\u914d\u5217\uff08\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6e21\u3055\u308c\u308b\uff09\u306b\u5bfe\u3057\u3066sizeof\u3092\u4f7f\u3063\u3066\u3082\u6b63\u3057\u3044\u8981\u7d20\u6570\u306f\u8fd4\u308a\u307e\u305b\u3093\u3002\u95a2\u6570\u306b\u914d\u5217\u3092\u6e21\u3059\u5834\u5408\u306f\u3001\u8981\u7d20\u6570\u3092\u5225\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"C\u8a00\u8a9e\u306e\u914d\u5217\u3068\u30dd\u30a4\u30f3\u30bf\u306e\u95a2\u4fc2\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"C\u8a00\u8a9e\u3067\u306f\u914d\u5217\u540d\u306f\u305d\u306e\u5148\u982d\u8981\u7d20\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u8868\u3059\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002\u300cint arr[5]\u300d\u306e\u5834\u5408\u3001arr\u3068\u66f8\u304f\u3060\u3051\u3067arr[0]\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u3059\u30dd\u30a4\u30f3\u30bf\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u300cint *p = arr;\u300d\u3068\u66f8\u3044\u3066\u30dd\u30a4\u30f3\u30bf\u5909\u6570p\u306b\u914d\u5217\u3092\u4ee3\u5165\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u300carr[i]\u300d\u3068\u300c*(arr+i)\u300d\u306f\u540c\u3058\u610f\u5473\u3067\u3059\u3002\u95a2\u6570\u306b\u914d\u5217\u3092\u6e21\u3059\u3068\u304d\u3082\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6e21\u3055\u308c\u308b\u305f\u3081\u3001\u95a2\u6570\u5185\u3067\u914d\u5217\u306e\u8981\u7d20\u3092\u5909\u66f4\u3059\u308b\u3068\u547c\u3073\u51fa\u3057\u5143\u306e\u914d\u5217\u3082\u5909\u66f4\u3055\u308c\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"C\u8a00\u8a9e\u306echar\u914d\u5217\u3067\u6587\u5b57\u5217\u3092\u6271\u3046\u65b9\u6cd5\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"C\u8a00\u8a9e\u306b\u306f\u6587\u5b57\u5217\u5c02\u7528\u306e\u578b\u304c\u306a\u304f\u3001char\u578b\u306e\u914d\u5217\u3067\u6587\u5b57\u5217\u3092\u8868\u73fe\u3057\u307e\u3059\u3002\u300cchar str[10] = \\\"Hello\\\";\u300d\u3068\u66f8\u304f\u3068\u3001\u6587\u5b57\u5217Hello\u306e\u5f8c\u306bNULL\u7d42\u7aef\u6587\u5b57(\\\\0)\u304c\u81ea\u52d5\u3067\u4ed8\u3044\u305f\u914d\u5217\u304c\u4f5c\u3089\u308c\u307e\u3059\u3002\u914d\u5217\u306e\u30b5\u30a4\u30ba\u306fNULL\u7d42\u7aef\u6587\u5b57\u5206+1\u30d0\u30a4\u30c8\u4ee5\u4e0a\u304c\u5fc5\u8981\u3067\u3059\u3002\u6587\u5b57\u5217\u306e\u30b3\u30d4\u30fc\u306b\u306fstrncpy(dst, src, sizeof(dst)-1)\u3092\u4f7f\u3044\u3001\u672b\u5c3e\u306b\u624b\u52d5\u3067NULL\u3092\u4ed8\u3051\u308b\u3068\u5b89\u5168\u3067\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"C\u8a00\u8a9e\u306e2\u6b21\u5143\u914d\u5217\u306e\u4f7f\u3044\u65b9\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"2\u6b21\u5143\u914d\u5217\u306f\u300cint arr[\u884c\u6570][\u5217\u6570]\u300d\u3067\u5ba3\u8a00\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u300cint matrix[3][4]\u300d\u306f3\u884c4\u5217\u306eint\u578b\u914d\u5217\u3067\u3059\u3002\u521d\u671f\u5316\u306f\u300c{{1,2,3,4},{5,6,7,8},{9,10,11,12}}\u300d\u306e\u3088\u3046\u306b\u884c\u3054\u3068\u306b\u4e2d\u62ec\u5f27\u3067\u533a\u5207\u308a\u307e\u3059\u3002\u30a2\u30af\u30bb\u30b9\u306f\u300cmatrix[\u884c][\u5217]\u300d\u306e\u5f62\u3067\u884c\u3044\u307e\u3059\u3002\u5168\u8981\u7d20\u3092\u51e6\u7406\u3059\u308b\u306b\u306f2\u91cdfor\u30eb\u30fc\u30d7\u3092\u4f7f\u3044\u307e\u3059\u3002\u95a2\u6570\u306b2\u6b21\u5143\u914d\u5217\u3092\u6e21\u3059\u5834\u5408\u306f\u300cvoid func(int arr[][4], int rows)\u300d\u306e\u3088\u3046\u306b\u5217\u6570\u3092\u660e\u793a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"C\u8a00\u8a9e\u306e\u914d\u5217\u30b3\u30fc\u30c9\u3092Claude Code\u3067\u751f\u6210\u3067\u304d\u307e\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u3067\u304d\u307e\u3059\u3002\u300c5\u8981\u7d20\u306eint\u914d\u5217\u3092\u5ba3\u8a00\u3057\u3066\u5168\u8981\u7d20\u306e\u5408\u8a08\u3092\u51fa\u529b\u3059\u308bC\u8a00\u8a9e\u30b3\u30fc\u30c9\u300d\u306e\u3088\u3046\u306b\u65e5\u672c\u8a9e\u3067\u8aac\u660e\u3059\u308b\u3060\u3051\u3067\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u53ef\u80fd\u306aC\u30b3\u30fc\u30c9\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002segmentation fault\u7b49\u306e\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3068\u554f\u984c\u306e\u30b3\u30fc\u30c9\u3092\u8cbc\u308a\u4ed8\u3051\u3066\u300c\u539f\u56e0\u3068\u4fee\u6b63\u65b9\u6cd5\u3092\u6559\u3048\u3066\u300d\u3068\u4f9d\u983c\u3059\u308b\u4f7f\u3044\u65b9\u3082\u52b9\u679c\u7684\u3067\u3059\u3002\"\n      }\n    }\n  ]\n}\n<\/script>\n\n\n\n<!-- RELATED_ARTICLES_START --><div class=\"related-articles related-v2\"><h3>\u95a2\u9023\u8a18\u4e8b \u2014 \u5165\u9580\u30fb\u5c0e\u5165\u30ab\u30c6\u30b4\u30ea\u304b\u3089<\/h3><div class=\"rel-grid\"><a href=\"https:\/\/genai-ai.co.jp\/ai-kanri\/blog\/hub-claude-nyumon\/\" class=\"rel-card rel-pillar\"><span class=\"rel-cat\">\u67f1\u8a18\u4e8b<\/span><span class=\"rel-title\">\u30102026\u5e748\u6708\u6700\u65b0\u3011Claude\u5165\u9580\u306e\u5b8c\u5168\u30ac\u30a4\u30c9\uff5c\u59cb\u3081\u65b9\u30fb\u521d\u671f\u8a2d\u5b9a\u30fb\u6700\u521d\u306e\u696d\u52d9\u6d3b\u7528\u307e\u3067<\/span><\/a><a href=\"https:\/\/genai-ai.co.jp\/ai-kanri\/blog\/cc-claude-code-guide\/\" class=\"rel-card rel-pillar\"><span class=\"rel-cat\">\u67f1\u8a18\u4e8b<\/span><span class=\"rel-title\">\u30102026\u5e748\u6708\u6700\u65b0\u3011Claude 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