{"id":17920,"date":"2026-07-18T10:50:22","date_gmt":"2026-07-18T01:50:22","guid":{"rendered":"https:\/\/genai-ai.co.jp\/ai-kanri\/?p=17920"},"modified":"2026-07-18T10:50:22","modified_gmt":"2026-07-18T01:50:22","slug":"cc-c-function-guide","status":"publish","type":"post","link":"https:\/\/genai-ai.co.jp\/ai-kanri\/blog\/cc-c-function-guide\/","title":{"rendered":"\u30102026\u5e747\u6708\u6700\u65b0\u3011C\u8a00\u8a9e\u306e\u95a2\u6570\uff08function\uff09\u5b8c\u5168\u30ac\u30a4\u30c9\uff5c\u5ba3\u8a00\u30fb\u5f15\u6570\u30fb\u623b\u308a\u5024\u30fb\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u30fb\u30dd\u30a4\u30f3\u30bf\u6e21\u3057\u30fb\u518d\u5e30\u307e\u3067\u5fb9\u5e95\u89e3\u8aac"},"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-function-guide.jpg\" alt=\"\u30102026\u5e747\u6708\u6700\u65b0\u3011C\u8a00\u8a9e\u306e\u95a2\u6570\uff08function\uff09\u5b8c\u5168\u30ac\u30a4\u30c9\uff5c\u5ba3\u8a00\u30fb\u5f15\u6570\u30fb\u623b\u308a\u5024\u30fb\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u30fb\u30dd\u30a4\u30f3\u30bf\u6e21\u3057\u30fb\u518d\u5e30\u307e\u3067\u5fb9\u5e95\u89e3\u8aac\" style=\"width:100%;height:auto;border-radius:12px;display:block;\">\n<\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-radius:12px;padding:24px 28px;margin:0 0 32px;border-left:4px solid #dc2626;\">\n  <p style=\"font-size:15px;font-weight:700;color:#1a1a1a;margin:0 0 16px;\">\u3053\u306e\u8a18\u4e8b\u306e\u5185\u5bb9<\/p>\n  <ol style=\"margin:0;padding-left:20px;font-size:14px;line-height:2.2;list-style:none;\">\n    <li><a href=\"#sec-01\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">01<\/span>C\u8a00\u8a9e\u306e\u95a2\u6570\u3068\u306f\u2015\u2015\u51e6\u7406\u3092\u90e8\u54c1\u5316\u3057\u3066\u518d\u5229\u7528\u3059\u308b\u4ed5\u7d44\u307f<\/a><\/li>\n    <li><a href=\"#sec-02\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">02<\/span>\u95a2\u6570\u306e\u5b9a\u7fa9\u3068\u547c\u3073\u51fa\u3057\u306e\u57fa\u672c\u69cb\u6587<\/a><\/li>\n    <li><a href=\"#sec-03\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">03<\/span>\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\uff08\u95a2\u6570\u5ba3\u8a00\uff09\u3068\u306f<\/a><\/li>\n    <li><a href=\"#sec-04\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">04<\/span>\u5f15\u6570\u306e\u6e21\u3057\u65b9\uff1a\u5024\u6e21\u3057\u3068\u53c2\u7167\u6e21\u3057\uff08\u30dd\u30a4\u30f3\u30bf\uff09\u306e\u9055\u3044<\/a><\/li>\n    <li><a href=\"#sec-05\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">05<\/span>\u914d\u5217\u30fb\u69cb\u9020\u4f53\u3092\u5f15\u6570\u306b\u53d6\u308b\u95a2\u6570\u306e\u66f8\u304d\u65b9<\/a><\/li>\n    <li><a href=\"#sec-06\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">0\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u306e\u95a2\u6570\u3092\u4f7f\u3044\u3053\u306a\u3059\u305f\u3081\u306b\u306f\u3001\u95a2\u6570\u8a2d\u8a08\u306e\u300c\u8003\u3048\u65b9\u300d\u3092\u8eab\u306b\u3064\u3051\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u4ee5\u4e0b\u306b\u5b9f\u52d9\u3067\u3088\u304f\u4f7f\u308f\u308c\u308b\u95a2\u6570\u8a2d\u8a08\u306e\u539f\u5247\u3092\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\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><strong>\u5358\u4e00\u8cac\u4efb\u306e\u539f\u5247<\/strong>\uff1a1\u3064\u306e\u95a2\u6570\u306f1\u3064\u306e\u3053\u3068\u3060\u3051\u3092\u884c\u3046\u3002\u300c\u5165\u529b\u306e\u691c\u8a3c\u300d\u3068\u300c\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u300d\u3068\u300c\u51fa\u529b\u306e\u6574\u5f62\u300d\u3092\u5225\u306e\u95a2\u6570\u306b\u5206\u96e2\u3059\u308b<\/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>\u95a2\u6570\u540d\u306f\u52d5\u8a5e+\u540d\u8a5e\u3067\u547d\u540d<\/strong>\uff1a\u4f55\u3092\u3059\u308b\u95a2\u6570\u304b\u304c\u4e00\u76ee\u3067\u308f\u304b\u308b\u3088\u3046\u300ccalculate_total\u300d\u300cprint_report\u300d\u300cvalidate_input\u300d\u306e\u3088\u3046\u306b\u52d5\u8a5e\u3067\u59cb\u3081\u308b<\/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>\u95a2\u6570\u306e\u9577\u3055\u306f\u753b\u97621\u679a\u4ee5\u5185<\/strong>\uff1a1\u3064\u306e\u95a2\u6570\u304c\u9577\u304f\u306a\u308a\u3059\u304e\u305f\u3089\u3001\u51e6\u7406\u3092\u7d30\u304b\u3044\u95a2\u6570\u306b\u5206\u5272\u3059\u308b\u30b5\u30a4\u30f3<\/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>\u5f15\u6570\u306f3\u3064\u4ee5\u5185\u3092\u76ee\u5b89<\/strong>\uff1a\u5f15\u6570\u304c\u591a\u3059\u304e\u308b\u5834\u5408\u306f\u69cb\u9020\u4f53\u306b\u307e\u3068\u3081\u308b\u304b\u3001\u95a2\u6570\u306e\u8cac\u4efb\u3092\u5206\u5272\u3059\u308b\u3053\u3068\u3092\u691c\u8a0e\u3059\u308b<\/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>\u30a8\u30e9\u30fc\u51e6\u7406\u3092\u660e\u793a\u3059\u308b<\/strong>\uff1a\u95a2\u6570\u304c\u30a8\u30e9\u30fc\u3092\u8fd4\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408\u306f\u623b\u308a\u5024\u3067\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3092\u8fd4\u3057\u3001\u547c\u3073\u51fa\u3057\u5143\u3067\u30c1\u30a7\u30c3\u30af\u3059\u308b\u8a2d\u8a08\u306b\u3059\u308b<\/span><\/div>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u539f\u5247\u306fC\u8a00\u8a9e\u56fa\u6709\u306e\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u3042\u3089\u3086\u308b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306b\u5171\u901a\u3059\u308b\u8a2d\u8a08\u306e\u8003\u3048\u65b9\u3067\u3059\u3002C\u8a00\u8a9e\u306e\u95a2\u6570\u3067\u3053\u308c\u3089\u3092\u7fd2\u5f97\u3057\u3066\u304a\u304f\u3068\u3001C++\u30fbJava\u30fbPython\u7b49\u306e\u4ed6\u8a00\u8a9e\u3092\u5b66\u3076\u969b\u306b\u3082\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u969b\u306e\u958b\u767a\u73fe\u5834\u3067\u3088\u304f\u898b\u304b\u3051\u308b\u95a2\u6570\u30d1\u30bf\u30fc\u30f3\u3068\u3057\u3066\u300c\u5165\u529b\u2192\u5909\u63db\u2192\u51fa\u529b\u300d\u306e\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u578b\u8a2d\u8a08\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u300c\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\u95a2\u6570\uff08read_data\uff09\u300d\u2192\u300c\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u95a2\u6570\uff08process_data\uff09\u300d\u2192\u300c\u7d50\u679c\u3092\u51fa\u529b\u3059\u308b\u95a2\u6570\uff08output_result\uff09\u300d\u3068\u3044\u3046\u3088\u3046\u306b\u3001\u305d\u308c\u305e\u308c\u3092\u72ec\u7acb\u3057\u305f\u95a2\u6570\u306b\u5206\u5272\u3059\u308b\u3053\u3068\u3067\u30c6\u30b9\u30c8\u30fb\u30c7\u30d0\u30c3\u30b0\u30fb\u518d\u5229\u7528\u304c\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002main()\u306f\u3053\u308c\u3089\u306e\u95a2\u6570\u3092\u3064\u306a\u3050\u300c\u53f8\u4ee4\u5854\u300d\u3068\u3057\u3066\u3001\u51e6\u7406\u306e\u6d41\u308c\u3092\u5b9a\u7fa9\u3059\u308b\u3060\u3051\u306e\u5f79\u5272\u306b\u3059\u308b\u306e\u304c\u7406\u60f3\u7684\u306a\u69cb\u9020\u3067\u3059\u3002<\/p>\n\n\n6<\/span>\u518d\u5e30\u95a2\u6570\u3068\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u306e\u57fa\u790e<\/a><\/li>\n    <li><a href=\"#sec-07\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">07<\/span>Claude Code\u3067C\u8a00\u8a9e\u306e\u95a2\u6570\u3092\u81ea\u52d5\u751f\u6210\u3059\u308b<\/a><\/li>\n    <li><a href=\"#faq\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">FAQ<\/span>\u3088\u304f\u3042\u308b\u8cea\u554f<\/a><\/li>\n  <\/ol>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u95a2\u6570\u3063\u3066\u4f55\u306e\u305f\u3081\u306b\u4f7f\u3046\u306e\uff1f\u300d\u300c\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u304c\u5fc5\u8981\u306a\u7406\u7531\u304c\u5206\u304b\u3089\u306a\u3044\u300d\u300c\u5024\u6e21\u3057\u3068\u53c2\u7167\u6e21\u3057\u306e\u9055\u3044\u304c\u7406\u89e3\u3067\u304d\u306a\u3044\u300d\u2014\u2014C\u8a00\u8a9e\u306e\u95a2\u6570\u3092\u5b66\u3076\u969b\u306b\u591a\u304f\u306e\u4eba\u304c\u6700\u521d\u306b\u3076\u3064\u304b\u308b\u7591\u554f\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u306e<strong>\u95a2\u6570\uff08function\uff09<\/strong>\u306f\u3001\u4e00\u9023\u306e\u51e6\u7406\u3092\u3072\u3068\u307e\u3068\u3081\u306b\u3057\u3066\u540d\u524d\u3092\u4ed8\u3051\u3001\u4f55\u5ea6\u3067\u3082\u547c\u3073\u51fa\u305b\u308b\u3088\u3046\u306b\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u540c\u3058\u51e6\u7406\u3092\u4f55\u5ea6\u3082\u66f8\u304b\u305a\u306b\u6e08\u3080\uff08\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\uff09\u3001\u51e6\u7406\u306e\u76ee\u7684\u304c\u5206\u304b\u308a\u3084\u3059\u304f\u306a\u308b\uff08\u53ef\u8aad\u6027\u5411\u4e0a\uff09\u3001\u30d0\u30b0\u3092\u4fee\u6b63\u3059\u308b\u3068\u304d1\u7b87\u6240\u76f4\u305b\u3070OK\uff08\u4fdd\u5b88\u6027\u5411\u4e0a\uff09\u3068\u3044\u30463\u3064\u306e\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001C\u8a00\u8a9e\u306e\u95a2\u6570\u306b\u3064\u3044\u3066<strong>\u5b9a\u7fa9\u30fb\u547c\u3073\u51fa\u3057\u30fb\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u30fb\u5f15\u6570\uff08\u5024\u6e21\u3057\/\u53c2\u7167\u6e21\u3057\uff09\u30fb\u623b\u308a\u5024\u30fb\u914d\u5217\u30fb\u69cb\u9020\u4f53\u30fb\u518d\u5e30\u95a2\u6570\u30fb\u95a2\u6570\u30dd\u30a4\u30f3\u30bf<\/strong>\u307e\u3067\u3001\u30b3\u30fc\u30c9\u4f8b\u4ed8\u304d\u3067\u4f53\u7cfb\u7684\u306b\u89e3\u8aac\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\">\u95a2\u6570\u306fC\u8a00\u8a9e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u57fa\u790e\u4e2d\u306e\u57fa\u790e\u3067\u3042\u308a\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u54c1\u8cea\u3092\u5927\u304d\u304f\u5de6\u53f3\u3057\u307e\u3059\u3002\u300cmain\u95a2\u6570\u306b\u5168\u51e6\u7406\u3092\u8a70\u3081\u8fbc\u3080\u300d\u30b9\u30bf\u30a4\u30eb\u3067\u66f8\u304b\u308c\u305f\u30b3\u30fc\u30c9\u306f\u8aad\u307f\u306b\u304f\u304f\u3001\u30c7\u30d0\u30c3\u30b0\u304c\u56f0\u96e3\u306b\u306a\u308a\u307e\u3059\u3002\u51e6\u7406\u3092\u9069\u5207\u306a\u7c92\u5ea6\u3067\u95a2\u6570\u306b\u5206\u5272\u3059\u308b\u300c\u95a2\u6570\u5206\u5272\u8a2d\u8a08\u300d\u306fC\u8a00\u8a9e\u30a8\u30f3\u30b8\u30cb\u30a2\u3068\u3057\u3066\u306e\u57fa\u672c\u30b9\u30ad\u30eb\u3067\u3059\u3002<\/div>\n<\/div>\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\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u300c\u306a\u305c\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u304c\u5fc5\u8981\u306a\u306e\u304b\u300d\u300c\u306a\u305c\u5024\u6e21\u3057\u3067\u306f\u547c\u3073\u51fa\u3057\u5143\u306e\u5909\u6570\u304c\u5909\u308f\u3089\u306a\u3044\u306e\u304b\u300d\u3068\u3044\u3046\u300c\u306a\u305c\u300d\u306e\u90e8\u5206\u3092\u91cd\u70b9\u7684\u306b\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u524d\u306b\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u304f\u3042\u308b\u30d0\u30b0\u3092\u4e8b\u524d\u306b\u9632\u3052\u307e\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><strong>C\u8a00\u8a9e\u306e\u95a2\u6570<\/strong>\u306e\u57fa\u672c\u6982\u5ff5\u3068\u30e1\u30ea\u30c3\u30c8\u304c\u5206\u304b\u308b<\/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>\u95a2\u6570\u306e\u5b9a\u7fa9\u30fb\u547c\u3073\u51fa\u3057\u30fb\u623b\u308a\u5024<\/strong>\u306e\u66f8\u304d\u65b9\u304c\u5206\u304b\u308b<\/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>\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\uff08\u95a2\u6570\u5ba3\u8a00\uff09<\/strong>\u304c\u5fc5\u8981\u306a\u7406\u7531\u3068\u66f8\u304d\u65b9\u304c\u5206\u304b\u308b<\/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>\u5024\u6e21\u3057\u3068\u53c2\u7167\u6e21\u3057\uff08\u30dd\u30a4\u30f3\u30bf\uff09<\/strong>\u306e\u9055\u3044\u3068\u4f7f\u3044\u5206\u3051\u304c\u7406\u89e3\u3067\u304d\u308b<\/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>\u914d\u5217\u30fb\u69cb\u9020\u4f53<\/strong>\u3092\u5f15\u6570\u3084\u623b\u308a\u5024\u306b\u4f7f\u3046\u65b9\u6cd5\u304c\u5206\u304b\u308b<\/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>\u518d\u5e30\u95a2\u6570\u3068\u95a2\u6570\u30dd\u30a4\u30f3\u30bf<\/strong>\u306e\u57fa\u672c\u304c\u7406\u89e3\u3067\u304d\u308b<\/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<\/strong>\u3067C\u8a00\u8a9e\u306e\u95a2\u6570\u30b3\u30fc\u30c9\u3092\u81ea\u52d5\u751f\u6210\u30fb\u30c7\u30d0\u30c3\u30b0\u3059\u308b\u65b9\u6cd5\u304c\u5206\u304b\u308b<\/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\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-function-guide&#038;blog_slug=cc-c-function-guide\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\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\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-c-function-guide&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\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\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" 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;\">FUNCTION BASICS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">C\u8a00\u8a9e\u306e\u95a2\u6570\u3068\u306f\u2015\u2015\u51e6\u7406\u3092\u90e8\u54c1\u5316\u3057\u3066\u518d\u5229\u7528\u3059\u308b\u4ed5\u7d44\u307f<\/span>\n  <span class=\"section-desc\">\u95a2\u6570\u3092\u4f7f\u3046\u30e1\u30ea\u30c3\u30c8\u3068main\u95a2\u6570\u306e\u5f79\u5272\u3092\u7406\u89e3\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u306e<strong>\u95a2\u6570<\/strong>\u306f\u300c\u51e6\u7406\u306e\u3072\u3068\u307e\u3068\u307e\u308a\u306b\u540d\u524d\u3092\u4ed8\u3051\u3066\u3001\u4f55\u5ea6\u3067\u3082\u547c\u3073\u51fa\u305b\u308b\u3088\u3046\u306b\u3057\u305f\u3082\u306e\u300d\u3067\u3059\u3002\u6599\u7406\u306e\u30ec\u30b7\u30d4\u306b\u4f8b\u3048\u308b\u3068\u3001\u95a2\u6570\u306f\u300c\u30ab\u30ec\u30fc\u306e\u4f5c\u308a\u65b9\u300d\u3068\u3044\u3046\u30ec\u30b7\u30d4\uff08\u51e6\u7406\u306e\u624b\u9806\uff09\u3067\u3001\u547c\u3073\u51fa\u3057\u306f\u305d\u306e\u30ec\u30b7\u30d4\u3092\u4f7f\u3063\u3066\u5b9f\u969b\u306b\u8abf\u7406\u3059\u308b\u3053\u3068\u306b\u5f53\u305f\u308a\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>\u95a2\u6570\uff08function\uff09<\/strong>\uff1aC\u8a00\u8a9e\u3067\u51e6\u7406\u306e\u307e\u3068\u307e\u308a\u306b\u540d\u524d\u3092\u4ed8\u3051\u3066\u518d\u5229\u7528\u53ef\u80fd\u306b\u3057\u305f\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u3002\u300c\u623b\u308a\u5024\u306e\u578b \u95a2\u6570\u540d(\u5f15\u6570\u30ea\u30b9\u30c8) { \u51e6\u7406; return \u623b\u308a\u5024; }\u300d\u306e\u5f62\u5f0f\u3067\u5b9a\u7fa9\u3057\u307e\u3059\u3002main()\u3082C\u8a00\u8a9e\u306e\u95a2\u6570\u306e1\u3064\u3067\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u5b9f\u884c\u6642\u306b\u6700\u521d\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\u7279\u5225\u306a\u95a2\u6570\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<table>\n<thead><tr><th>\u6bd4\u8f03\u9805\u76ee<\/th><th>\u95a2\u6570\u306a\u3057\uff08main\u4e00\u62ec\uff09<\/th><th>\u95a2\u6570\u5206\u5272<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u30b3\u30fc\u30c9\u306e\u9577\u3055<\/td><td>1\u30d5\u30a1\u30a4\u30eb\u306b\u5168\u51e6\u7406\u304c\u96c6\u4e2d<\/td><td>\u5404\u95a2\u6570\u306f\u77ed\u304f\u8aad\u307f\u3084\u3059\u3044<\/td><\/tr>\n<tr><td>\u518d\u5229\u7528\u6027<\/td><td>\u540c\u3058\u51e6\u7406\u3092\u4f55\u5ea6\u3082\u30b3\u30d4\u30fc<\/td><td>\u95a2\u6570\u3092\u547c\u3073\u51fa\u3059\u3060\u3051<\/td><\/tr>\n<tr><td>\u30c7\u30d0\u30c3\u30b0\u306e\u3057\u3084\u3059\u3055<\/td><td>\u539f\u56e0\u306e\u7279\u5b9a\u304c\u56f0\u96e3<\/td><td>\u554f\u984c\u306e\u3042\u308b\u95a2\u6570\u3092\u7279\u5b9a\u3057\u3084\u3059\u3044<\/td><\/tr>\n<tr><td>\u30c1\u30fc\u30e0\u958b\u767a<\/td><td>\u5206\u62c5\u3057\u3065\u3089\u3044<\/td><td>\u95a2\u6570\u3054\u3068\u306b\u5206\u62c5\u3067\u304d\u308b<\/td><\/tr>\n<tr><td>\u30d0\u30b0\u4fee\u6b63<\/td><td>\u5168\u7b87\u6240\u3092\u4fee\u6b63\u304c\u5fc5\u8981<\/td><td>1\u3064\u306e\u95a2\u6570\u3092\u4fee\u6b63\u3059\u308c\u3070\u5168\u4f53\u306b\u53cd\u6620<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u4e2d\u3067\u7279\u5225\u306a\u5f79\u5272\u3092\u6301\u3064\u306e\u304c<code>main()<\/code>\u95a2\u6570\u3067\u3059\u3002\u30d7\u30ed\u30b0\u30e9\u30e0\u5b9f\u884c\u6642\u306b\u6700\u521d\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\u300c\u30a8\u30f3\u30c8\u30ea\u30fc\u30dd\u30a4\u30f3\u30c8\u300d\u3067\u3001\u4ed6\u306e\u95a2\u6570\u3092main()\u304b\u3089\u547c\u3073\u51fa\u3059\u5f62\u3067\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u5c55\u958b\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\"><strong>\u30d7\u30ed\u30b0\u30e9\u30e0\u958b\u59cb<\/strong><br><span style=\"font-size:12px;\">OS\u304cmain()\u3092\u547c\u3073\u51fa\u3059<\/span><\/div>  <div class=\"g-flow-arrow\">&#8594;<\/div>  <div class=\"g-flow-item\"><strong>main()\u5b9f\u884c<\/strong><br><span style=\"font-size:12px;\">\u4ed6\u306e\u95a2\u6570\u3092\u547c\u3073\u51fa\u3059<\/span><\/div>  <div class=\"g-flow-arrow\">&#8594;<\/div>  <div class=\"g-flow-item\"><strong>\u5404\u95a2\u6570\u3092\u5b9f\u884c<\/strong><br><span style=\"font-size:12px;\">\u51e6\u7406\u304c\u5b8c\u4e86\u3057\u305f\u3089\u623b\u308b<\/span><\/div>  <div class=\"g-flow-arrow\">&#8594;<\/div>  <div class=\"g-flow-item\"><strong>main()\u7d42\u4e86<\/strong><br><span style=\"font-size:12px;\">return 0\u3067\u30d7\u30ed\u30b0\u30e9\u30e0\u7d42\u4e86<\/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\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-function-guide&#038;blog_slug=cc-c-function-guide\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\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\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-c-function-guide&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\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\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" 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;\">FUNCTION SYNTAX<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u95a2\u6570\u306e\u5b9a\u7fa9\u3068\u547c\u3073\u51fa\u3057\u306e\u57fa\u672c\u69cb\u6587<\/span>\n  <span class=\"section-desc\">\u623b\u308a\u5024\u306e\u578b\u30fb\u95a2\u6570\u540d\u30fb\u5f15\u6570\u30ea\u30b9\u30c8\u30fbreturn\u6587\u306e\u66f8\u304d\u65b9<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u306e\u95a2\u6570\u5b9a\u7fa9\u306f\u300c\u623b\u308a\u5024\u306e\u578b \u95a2\u6570\u540d(\u5f15\u6570\u30ea\u30b9\u30c8) { \u51e6\u7406; return \u623b\u308a\u5024; }\u300d\u306e\u5f62\u5f0f\u3067\u3059\u3002\u623b\u308a\u5024\u304c\u306a\u3044\u5834\u5408\u306f<code>void<\/code>\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#89b4fa;\">#include<\/span> <span style=\"color:#a6e3a1;\">&lt;stdio.h&gt;<\/span>\n\n<span style=\"color:#6c7086;\">\/* \u95a2\u6570\u5b9a\u7fa9: int\u578b\u306e\u5024\u30922\u3064\u53d7\u3051\u53d6\u308a\u3001\u5408\u8a08\u3092int\u578b\u3067\u8fd4\u3059 *\/<\/span>\n<span style=\"color:#cba6f7;\">int<\/span> <span style=\"color:#89b4fa;\">add<\/span>(<span style=\"color:#cba6f7;\">int<\/span> a, <span style=\"color:#cba6f7;\">int<\/span> b) {\n    <span style=\"color:#cba6f7;\">return<\/span> a + b;  <span style=\"color:#6c7086;\">\/* \u623b\u308a\u5024\u3092return\u3067\u8fd4\u3059 *\/<\/span>\n}\n\n<span style=\"color:#6c7086;\">\/* \u623b\u308a\u5024\u306a\u3057\uff08void\uff09\u306e\u95a2\u6570 *\/<\/span>\n<span style=\"color:#cba6f7;\">void<\/span> <span style=\"color:#89b4fa;\">print_hello<\/span>(<span style=\"color:#cba6f7;\">void<\/span>) {\n    <span style=\"color:#89b4fa;\">printf<\/span>(<span style=\"color:#a6e3a1;\">\"Hello, World!\\n\"<\/span>);\n    <span style=\"color:#6c7086;\">\/* void\u95a2\u6570\u306breturn\u306f\u4e0d\u8981\uff08\u307e\u305f\u306f return; \u306e\u307f\uff09*\/<\/span>\n}\n\n<span style=\"color:#cba6f7;\">int<\/span> <span style=\"color:#89b4fa;\">main<\/span>() {\n    <span style=\"color:#cba6f7;\">int<\/span> result = <span style=\"color:#89b4fa;\">add<\/span>(<span style=\"color:#fab387;\">3<\/span>, <span style=\"color:#fab387;\">5<\/span>);  <span style=\"color:#6c7086;\">\/* \u95a2\u6570\u3092\u547c\u3073\u51fa\u3059 *\/<\/span>\n    <span style=\"color:#89b4fa;\">printf<\/span>(<span style=\"color:#a6e3a1;\">\"3 + 5 = %d\\n\"<\/span>, result);  <span style=\"color:#6c7086;\">\/* \u2192 8 *\/<\/span>\n\n    <span style=\"color:#89b4fa;\">print_hello<\/span>();  <span style=\"color:#6c7086;\">\/* void\u95a2\u6570\u306f\u623b\u308a\u5024\u306a\u3057 *\/<\/span>\n    <span style=\"color:#cba6f7;\">return<\/span> <span style=\"color:#fab387;\">0<\/span>;\n}\n<\/div>\n\n\n\n<table>\n<thead><tr><th>\u623b\u308a\u5024\u306e\u578b<\/th><th>\u4f7f\u3044\u3069\u3053\u308d<\/th><th>return\u6587\u306e\u66f8\u304d\u65b9<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>int<\/td><td>\u6574\u6570\u5024\u3092\u8fd4\u3059\uff08\u8a08\u7b97\u7d50\u679c\u3001\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u7b49\uff09<\/td><td>return \u6574\u6570\u5024;<\/td><\/tr>\n<tr><td>double \/ float<\/td><td>\u5c0f\u6570\u70b9\u3092\u542b\u3080\u5024\u3092\u8fd4\u3059<\/td><td>return \u5c0f\u6570\u5024;<\/td><\/tr>\n<tr><td>char *<\/td><td>\u6587\u5b57\u5217\uff08\u30dd\u30a4\u30f3\u30bf\uff09\u3092\u8fd4\u3059<\/td><td>return \u6587\u5b57\u5217\u30dd\u30a4\u30f3\u30bf;<\/td><\/tr>\n<tr><td>void<\/td><td>\u623b\u308a\u5024\u306a\u3057\uff08\u51e6\u7406\u3060\u3051\u3092\u884c\u3046\u95a2\u6570\uff09<\/td><td>return; \u307e\u305f\u306f\u7701\u7565\u53ef<\/td><\/tr>\n<tr><td>\u30dd\u30a4\u30f3\u30bf\u578b<\/td><td>\u30a2\u30c9\u30ec\u30b9\u3092\u8fd4\u3059\uff08\u52d5\u7684\u78ba\u4fdd\u30e1\u30e2\u30ea\u7b49\uff09<\/td><td>return \u30dd\u30a4\u30f3\u30bf\u5909\u6570;<\/td><\/tr>\n<\/tbody>\n<\/table>\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;\">return\u6587\u306f\u95a2\u6570\u3092\u5373\u5ea7\u306b\u7d42\u4e86\u3055\u305b\u308b<\/strong><\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">return\u6587\u306f\u95a2\u6570\u306e\u623b\u308a\u5024\u3092\u6307\u5b9a\u3059\u308b\u3068\u540c\u6642\u306b\u3001\u95a2\u6570\u306e\u5b9f\u884c\u3092\u305d\u306e\u5834\u3067\u7d42\u4e86\u3055\u305b\u307e\u3059\u3002\u300c\u65e9\u671freturn\uff08early return\uff09\u300d\u3068\u3057\u3066\u3001\u30a8\u30e9\u30fc\u6761\u4ef6\u3092\u5148\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3066return\u3059\u308b\u3053\u3068\u3067\u30cd\u30b9\u30c8\u3092\u6e1b\u3089\u3059\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002void\u95a2\u6570\u3067\u3082\u300creturn;\u300d\uff08\u5024\u306a\u3057\uff09\u3067\u9014\u4e2d\u7d42\u4e86\u3067\u304d\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\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-function-guide&#038;blog_slug=cc-c-function-guide\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\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\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-c-function-guide&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\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\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" 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;\">PROTOTYPE<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\uff08\u95a2\u6570\u5ba3\u8a00\uff09\u3068\u306f<\/span>\n  <span class=\"section-desc\">\u4f7f\u3046\u524d\u306b\u5ba3\u8a00\u304c\u5fc5\u8981\u306a\u7406\u7531\u3068\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\u3078\u306e\u5206\u96e2<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u3067\u306f\u3001<strong>\u95a2\u6570\u3092\u4f7f\u3046\u524d\u306b\u300c\u3053\u306e\u95a2\u6570\u304c\u5b58\u5728\u3059\u308b\u300d\u3053\u3068\u3092\u30b3\u30f3\u30d1\u30a4\u30e9\u306b\u77e5\u3089\u305b\u308b\u5fc5\u8981<\/strong>\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u304c<strong>\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\uff08\u95a2\u6570\u5ba3\u8a00\uff09<\/strong>\u3067\u3059\u3002\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u306a\u3057\u3067\u95a2\u6570\u3092\u5f8c\u304b\u3089\u5b9a\u7fa9\u3059\u308b\u3068\u3001\u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u95a2\u6570\u3092\u8a8d\u8b58\u3067\u304d\u305a\u30a8\u30e9\u30fc\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\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>\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\uff08prototype declaration\uff09<\/strong>\uff1a\u95a2\u6570\u306e\u5b9a\u7fa9\u3088\u308a\u5148\u306b\u300c\u95a2\u6570\u306e\u540d\u524d\u30fb\u5f15\u6570\u306e\u578b\u30fb\u623b\u308a\u5024\u306e\u578b\u300d\u3060\u3051\u3092\u30b3\u30f3\u30d1\u30a4\u30e9\u306b\u4f1d\u3048\u308b\u5ba3\u8a00\u3002\u300c\u623b\u308a\u5024\u578b \u95a2\u6570\u540d(\u5f15\u6570\u578b\u30ea\u30b9\u30c8);\u300d\u306e\u5f62\u5f0f\u3067\u3001\u95a2\u6570\u672c\u4f53\uff08{...}\u306e\u90e8\u5206\uff09\u306f\u66f8\u304b\u305a\u30bb\u30df\u30b3\u30ed\u30f3\u3067\u7d42\u308f\u308a\u307e\u3059\u3002\u901a\u5e38\u306f\u30bd\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u306e\u5148\u982d\u307e\u305f\u306f\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\uff08.h\uff09\u306b\u66f8\u304d\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#89b4fa;\">#include<\/span> <span style=\"color:#a6e3a1;\">&lt;stdio.h&gt;<\/span>\n\n<span style=\"color:#6c7086;\">\/* \u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\uff08\u30d5\u30a1\u30a4\u30eb\u5148\u982d\u306b\u66f8\u304f\uff09 *\/<\/span>\n<span style=\"color:#cba6f7;\">int<\/span> <span style=\"color:#89b4fa;\">multiply<\/span>(<span style=\"color:#cba6f7;\">int<\/span> a, <span style=\"color:#cba6f7;\">int<\/span> b);\n<span style=\"color:#cba6f7;\">void<\/span> <span style=\"color:#89b4fa;\">show_result<\/span>(<span style=\"color:#cba6f7;\">int<\/span> result);\n\n<span style=\"color:#cba6f7;\">int<\/span> <span style=\"color:#89b4fa;\">main<\/span>() {\n    <span style=\"color:#cba6f7;\">int<\/span> r = <span style=\"color:#89b4fa;\">multiply<\/span>(<span style=\"color:#fab387;\">4<\/span>, <span style=\"color:#fab387;\">7<\/span>);\n    <span style=\"color:#89b4fa;\">show_result<\/span>(r);\n    <span style=\"color:#cba6f7;\">return<\/span> <span style=\"color:#fab387;\">0<\/span>;\n}\n\n<span style=\"color:#6c7086;\">\/* \u95a2\u6570\u672c\u4f53\uff08main()\u306e\u5f8c\u308d\u306b\u66f8\u3044\u3066\u3082OK\uff09 *\/<\/span>\n<span style=\"color:#cba6f7;\">int<\/span> <span style=\"color:#89b4fa;\">multiply<\/span>(<span style=\"color:#cba6f7;\">int<\/span> a, <span style=\"color:#cba6f7;\">int<\/span> b) {\n    <span style=\"color:#cba6f7;\">return<\/span> a * b;\n}\n<span style=\"color:#cba6f7;\">void<\/span> <span style=\"color:#89b4fa;\">show_result<\/span>(<span style=\"color:#cba6f7;\">int<\/span> result) {\n    <span style=\"color:#89b4fa;\">printf<\/span>(<span style=\"color:#a6e3a1;\">\"\u7d50\u679c: %d\\n\"<\/span>, result);\n}\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;\">\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\uff08.h\uff09\u3067\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u3092\u7ba1\u7406\u3059\u308b<\/strong><\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u8907\u6570\u306e\u30bd\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u306b\u5206\u5272\u3057\u305f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u95a2\u6570\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u3092\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\uff08\u4f8b\uff1acalc.h\uff09\u306b\u307e\u3068\u3081\u3066\u66f8\u304d\u3001\u4f7f\u3046\u5074\u306e\u30d5\u30a1\u30a4\u30eb\u3067\u300c#include \"calc.h\"\u300d\u3068\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u300c#include <stdio.h>\u300d\u3082printf()\u7b49\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u3092\u307e\u3068\u3081\u305f\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\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\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-function-guide&#038;blog_slug=cc-c-function-guide\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\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\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-c-function-guide&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\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\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" 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;\">ARGUMENTS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u5f15\u6570\u306e\u6e21\u3057\u65b9\uff1a\u5024\u6e21\u3057\u3068\u53c2\u7167\u6e21\u3057\uff08\u30dd\u30a4\u30f3\u30bf\uff09\u306e\u9055\u3044<\/span>\n  <span class=\"section-desc\">\u547c\u3073\u51fa\u3057\u5143\u306e\u5909\u6570\u3092\u5909\u66f4\u3067\u304d\u308b\u53c2\u7167\u6e21\u3057\u306e\u3057\u304f\u307f\u3092\u7406\u89e3\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u306e\u95a2\u6570\u306b\u5f15\u6570\u3092\u6e21\u3059\u65b9\u6cd5\u306b\u306f<strong>\u5024\u6e21\u3057\uff08value passing\uff09<\/strong>\u3068<strong>\u53c2\u7167\u6e21\u3057\uff08reference passing \/ \u30dd\u30a4\u30f3\u30bf\u6e21\u3057\uff09<\/strong>\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001C\u8a00\u8a9e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u6700\u3082\u91cd\u8981\u306a\u30b9\u30ad\u30eb\u306e\u3072\u3068\u3064\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>\u5024\u6e21\u3057\uff08value passing\uff09<\/strong>\uff1a\u95a2\u6570\u547c\u3073\u51fa\u3057\u6642\u306b\u5909\u6570\u306e\u5024\u3092\u30b3\u30d4\u30fc\u3057\u3066\u6e21\u3059\u65b9\u6cd5\u3002\u95a2\u6570\u5185\u3067\u30b3\u30d4\u30fc\u3092\u5909\u66f4\u3057\u3066\u3082\u3001\u547c\u3073\u51fa\u3057\u5143\u306e\u5143\u306e\u5909\u6570\u306f\u5909\u66f4\u3055\u308c\u307e\u305b\u3093\u3002C\u8a00\u8a9e\u3067\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u5168\u3066\u306e\u5f15\u6570\u304c\u5024\u6e21\u3057\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#89b4fa;\">#include<\/span> <span style=\"color:#a6e3a1;\">&lt;stdio.h&gt;<\/span>\n\n<span style=\"color:#6c7086;\">\/* \u5024\u6e21\u3057\uff1a\u95a2\u6570\u5185\u306e\u5909\u66f4\u306f\u547c\u3073\u51fa\u3057\u5143\u306b\u53cd\u6620\u3055\u308c\u306a\u3044 *\/<\/span>\n<span style=\"color:#cba6f7;\">void<\/span> <span style=\"color:#89b4fa;\">double_value<\/span>(<span style=\"color:#cba6f7;\">int<\/span> x) {\n    x = x * <span style=\"color:#fab387;\">2<\/span>;  <span style=\"color:#6c7086;\">\/* x\u306e\u30b3\u30d4\u30fc\u3092\u5909\u66f4\u3059\u308b\u3060\u3051 *\/<\/span>\n    <span style=\"color:#89b4fa;\">printf<\/span>(<span style=\"color:#a6e3a1;\">\"\u95a2\u6570\u5185: %d\\n\"<\/span>, x);\n}\n\n<span style=\"color:#6c7086;\">\/* \u53c2\u7167\u6e21\u3057\uff08\u30dd\u30a4\u30f3\u30bf\uff09\uff1a\u95a2\u6570\u5185\u306e\u5909\u66f4\u304c\u547c\u3073\u51fa\u3057\u5143\u306b\u53cd\u6620\u3055\u308c\u308b *\/<\/span>\n<span style=\"color:#cba6f7;\">void<\/span> <span style=\"color:#89b4fa;\">double_pointer<\/span>(<span style=\"color:#cba6f7;\">int<\/span> *x) {\n    *x = *x * <span style=\"color:#fab387;\">2<\/span>;  <span style=\"color:#6c7086;\">\/* \u5143\u306e\u5909\u6570\u3092\u76f4\u63a5\u5909\u66f4 *\/<\/span>\n    <span style=\"color:#89b4fa;\">printf<\/span>(<span style=\"color:#a6e3a1;\">\"\u95a2\u6570\u5185: %d\\n\"<\/span>, *x);\n}\n\n<span style=\"color:#cba6f7;\">int<\/span> <span style=\"color:#89b4fa;\">main<\/span>() {\n    <span style=\"color:#cba6f7;\">int<\/span> num = <span style=\"color:#fab387;\">5<\/span>;\n\n    <span style=\"color:#89b4fa;\">double_value<\/span>(num);\n    <span style=\"color:#89b4fa;\">printf<\/span>(<span style=\"color:#a6e3a1;\">\"\u5024\u6e21\u3057\u5f8c: %d\\n\"<\/span>, num);     <span style=\"color:#6c7086;\">\/* \u2192 5\uff08\u5909\u308f\u3089\u306a\u3044\uff09*\/<\/span>\n\n    <span style=\"color:#89b4fa;\">double_pointer<\/span>(&num);\n    <span style=\"color:#89b4fa;\">printf<\/span>(<span style=\"color:#a6e3a1;\">\"\u53c2\u7167\u6e21\u3057\u5f8c: %d\\n\"<\/span>, num);  <span style=\"color:#6c7086;\">\/* \u2192 10\uff08\u5909\u308f\u308b\uff09*\/<\/span>\n    <span style=\"color:#cba6f7;\">return<\/span> <span style=\"color:#fab387;\">0<\/span>;\n}\n<\/div>\n\n\n\n<table>\n<thead><tr><th>\u6bd4\u8f03\u9805\u76ee<\/th><th>\u5024\u6e21\u3057<\/th><th>\u53c2\u7167\u6e21\u3057\uff08\u30dd\u30a4\u30f3\u30bf\u6e21\u3057\uff09<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u5f15\u6570\u306e\u578b<\/td><td>\u901a\u5e38\u306e\u578b\uff08int x\uff09<\/td><td>\u30dd\u30a4\u30f3\u30bf\u578b\uff08int *x\uff09<\/td><\/tr>\n<tr><td>\u547c\u3073\u51fa\u3057\u65b9<\/td><td>func(num)<\/td><td>func(&num) \u2190 &\u3067\u30a2\u30c9\u30ec\u30b9\u3092\u6e21\u3059<\/td><\/tr>\n<tr><td>\u95a2\u6570\u5185\u3067\u306e\u30a2\u30af\u30bb\u30b9<\/td><td>x\u3068\u3057\u3066\u4f7f\u3046<\/td><td>*x\u3068\u3057\u3066\u4f7f\u3046\uff08\u30c7\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\uff09<\/td><\/tr>\n<tr><td>\u547c\u3073\u51fa\u3057\u5143\u3078\u306e\u5f71\u97ff<\/td><td>\u306a\u3057\uff08\u30b3\u30d4\u30fc\u3092\u64cd\u4f5c\uff09<\/td><td>\u3042\u308a\uff08\u5143\u30c7\u30fc\u30bf\u3092\u76f4\u63a5\u64cd\u4f5c\uff09<\/td><\/tr>\n<tr><td>\u4f7f\u3044\u3069\u3053\u308d<\/td><td>\u8aad\u307f\u53d6\u308a\u5c02\u7528\u30fb\u5c0f\u3055\u3044\u30c7\u30fc\u30bf<\/td><td>\u5909\u66f4\u304c\u5fc5\u8981\u30fb\u5927\u304d\u3044\u30c7\u30fc\u30bf\uff08\u69cb\u9020\u4f53\u7b49\uff09<\/td><\/tr>\n<\/tbody>\n<\/table>\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\">\u5024\u6e21\u3057\u3068\u53c2\u7167\u6e21\u3057\u306e\u6df7\u540c\u306f\u3001C\u8a00\u8a9e\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u304c\u6700\u521d\u306b\u3064\u307e\u305a\u304f\u6700\u5927\u306e\u843d\u3068\u3057\u7a74\u3067\u3059\u3002\u300c\u95a2\u6570\u5185\u3067\u5909\u66f4\u3057\u305f\u306e\u306b\u547c\u3073\u51fa\u3057\u5143\u304c\u5909\u308f\u3089\u306a\u3044\u300d\u3068\u3044\u3046\u30d0\u30b0\u306e\u539f\u56e0\u306f\u5fc5\u305a\u3053\u3053\u306b\u3042\u308a\u307e\u3059\u3002\u300c\u5909\u66f4\u3092\u5916\u306b\u6301\u3061\u51fa\u3057\u305f\u3044=\u30dd\u30a4\u30f3\u30bf\u6e21\u3057\u300d\u3068\u899a\u3048\u3066\u304a\u3051\u3070\u8ff7\u3044\u307e\u305b\u3093\u3002<\/div>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">swap\u95a2\u6570\u306f\u53c2\u7167\u6e21\u3057\u306e\u7406\u89e3\u306e\u305f\u3081\u306e\u5b9a\u756a\u7df4\u7fd2\u3067\u3059\u30022\u3064\u306e\u5909\u6570\u3092\u4ea4\u63db\u3059\u308b\u952e\u6e21\u3057\u5199\u6cd5\uff1a\u5024\u6e21\u3057\u3067\u306f\u4ea4\u63db\u3067\u304d\u305a\u3001\u30dd\u30a4\u30f3\u30bf\u6e21\u3057\u3067\u306e\u307f\u6b63\u3057\u304f\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n\/* NG: \u5024\u6e21\u3057\u3067\u306f\u4ea4\u63db\u3067\u304d\u306a\u3044 *\/\nvoid swap_ng(int a, int b) {\n    int tmp = a; a = b; b = tmp;\n}\n\n\/* OK: \u30dd\u30a4\u30f3\u30bf\u6e21\u3057\u3067\u6b63\u3057\u304f\u4ea4\u63db *\/\nvoid swap_ok(int *a, int *b) {\n    int tmp = *a; *a = *b; *b = tmp;\n}\n\nint main() {\n    int x = 10, y = 20;\n    swap_ng(x, y);\n    printf(\"\u5024\u6e21\u3057\u5f8c: x=%d, y=%d\n\", x, y);  \/* -> 10, 20 *\/\n    swap_ok(&x, &y);\n    printf(\"\u30dd\u30a4\u30f3\u30bf\u6e21\u3057\u5f8c: x=%d, y=%d\n\", x, y);  \/* -> 20, 10 *\/\n    return 0;\n}\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u306f\u95a2\u6570\u5185\u3067\u5ba3\u8a00\u3057\u3001\u95a2\u6570\u7d42\u4e86\u3068\u540c\u6642\u306b\u6d88\u3048\u307e\u3059\u3002\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u306f\u30d7\u30ed\u30b0\u30e9\u30e0\u5168\u4f53\u304b\u3089\u53c2\u7167\u3067\u304d\u307e\u3059\u304c\u3001\u5024\u306e\u8ffd\u8de1\u304c\u56f0\u96e3\u306b\u306a\u308a\u30d0\u30b0\u306e\u6e29\u5e8a\u306b\u306a\u308a\u3084\u3059\u3044\u305f\u3081\u3001\u5fc5\u8981\u306a\u5024\u306f\u30dd\u30a4\u30f3\u30bf\u5f15\u6570\u3067\u6e21\u3059\u30b9\u30bf\u30a4\u30eb\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e38\u7528\u7684\u306a\u30d1\u30bf\u30fc\u30f3\u3068\u3057\u3066\u3001static\u5909\u6570\uff08\u95a2\u6570\u5185\u3067\u5ba3\u8a00\u3059\u308b\u304c\u5024\u304c\u4fdd\u6301\u3055\u308c\u308b\uff09\u3082\u3088\u304f\u4f7f\u308f\u308c\u307e\u3059\u3002<code>static int count = 0;<\/code>\u3068\u5ba3\u8a00\u3059\u308b\u3068\u3001\u95a2\u6570\u304c\u547c\u3070\u308c\u308b\u305f\u3073\u306b\u5024\u304c\u7d2f\u7a4d\u52a0\u7b97\u3055\u308c\u308b\u30ab\u30a6\u30f3\u30bf\u30fc\u95a2\u6570\u304c\u4f5c\u308c\u307e\u3059\u3002\u5909\u6570\u30b9\u30b3\u30fc\u30d7\u3092\u95a2\u6570\u5185\u306b\u9650\u5b9a\u3057\u305f\u307e\u307e\u72b6\u614b\u3092\u4fdd\u6301\u3057\u305f\u3044\u5834\u5408\u306b\u6709\u52b9\u3067\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u306e\u4ee3\u66ff\u3068\u3057\u3066\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\nvoid count_up() {\n    static int count = 0;  \/* static: \u95a2\u6570\u7d42\u4e86\u3067\u3082\u5024\u4fdd\u6301 *\/\n    count++;\n    printf(\"\u547c\u3073\u51fa\u3057\u56de\u6570: %d\n\", count);\n}\n\nint main() {\n    count_up();  \/* -> 1 *\/\n    count_up();  \/* -> 2 *\/\n    count_up();  \/* -> 3 *\/\n    return 0;\n}\n<\/div>\n\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\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-function-guide&#038;blog_slug=cc-c-function-guide\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\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\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-c-function-guide&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\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\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" 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;\">ARRAY STRUCT ARGS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u914d\u5217\u30fb\u69cb\u9020\u4f53\u3092\u5f15\u6570\u306b\u53d6\u308b\u95a2\u6570\u306e\u66f8\u304d\u65b9<\/span>\n  <span class=\"section-desc\">\u914d\u5217\u306f\u81ea\u52d5\u7684\u306b\u30dd\u30a4\u30f3\u30bf\u6e21\u3057\u306b\u306a\u308b\u70b9\u306b\u6ce8\u610f\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">5-1. \u914d\u5217\u3092\u5f15\u6570\u306b\u6e21\u3059<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u3067\u306f\u3001<strong>\u914d\u5217\u3092\u95a2\u6570\u306b\u6e21\u3059\u3068\u81ea\u52d5\u7684\u306b\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059<\/strong>\uff08\u914d\u5217\u306e\u5148\u982d\u30a2\u30c9\u30ec\u30b9\u304c\u6e21\u3055\u308c\u308b\uff09\u3002\u305d\u306e\u305f\u3081\u95a2\u6570\u5185\u3067\u914d\u5217\u3092\u5909\u66f4\u3059\u308b\u3068\u3001\u547c\u3073\u51fa\u3057\u5143\u306e\u914d\u5217\u3082\u5909\u66f4\u3055\u308c\u307e\u3059\u3002\u307e\u305f\u3001\u914d\u5217\u306e\u30b5\u30a4\u30ba\u60c5\u5831\u306f\u5931\u308f\u308c\u308b\u305f\u3081\u3001<strong>\u30b5\u30a4\u30ba\u3092\u5225\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3059<\/strong>\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#89b4fa;\">#include<\/span> <span style=\"color:#a6e3a1;\">&lt;stdio.h&gt;<\/span>\n\n<span style=\"color:#6c7086;\">\/* \u914d\u5217\u5f15\u6570\uff1aint arr[]\u306fint *arr\u3068\u540c\u3058\u610f\u5473 *\/<\/span>\n<span style=\"color:#cba6f7;\">void<\/span> <span style=\"color:#89b4fa;\">print_array<\/span>(<span style=\"color:#cba6f7;\">int<\/span> arr[], <span style=\"color:#cba6f7;\">int<\/span> size) {\n    <span style=\"color:#cba6f7;\">for<\/span> (<span style=\"color:#cba6f7;\">int<\/span> i = <span style=\"color:#fab387;\">0<\/span>; i < size; i++) {\n        <span style=\"color:#89b4fa;\">printf<\/span>(<span style=\"color:#a6e3a1;\">\"%d \"<\/span>, arr[i]);\n    }\n    <span style=\"color:#89b4fa;\">printf<\/span>(<span style=\"color:#a6e3a1;\">\"\\n\"<\/span>);\n}\n\n<span style=\"color:#cba6f7;\">int<\/span> <span style=\"color:#89b4fa;\">sum_array<\/span>(<span style=\"color:#cba6f7;\">int<\/span> *arr, <span style=\"color:#cba6f7;\">int<\/span> size) {\n    <span style=\"color:#cba6f7;\">int<\/span> total = <span style=\"color:#fab387;\">0<\/span>;\n    <span style=\"color:#cba6f7;\">for<\/span> (<span style=\"color:#cba6f7;\">int<\/span> i = <span style=\"color:#fab387;\">0<\/span>; i < size; i++) {\n        total += arr[i];\n    }\n    <span style=\"color:#cba6f7;\">return<\/span> total;\n}\n\n<span style=\"color:#cba6f7;\">int<\/span> <span style=\"color:#89b4fa;\">main<\/span>() {\n    <span style=\"color:#cba6f7;\">int<\/span> nums[] = {<span style=\"color:#fab387;\">10<\/span>, <span style=\"color:#fab387;\">20<\/span>, <span style=\"color:#fab387;\">30<\/span>, <span style=\"color:#fab387;\">40<\/span>, <span style=\"color:#fab387;\">50<\/span>};\n    <span style=\"color:#cba6f7;\">int<\/span> n = <span style=\"color:#cba6f7;\">sizeof<\/span>(nums) \/ <span style=\"color:#cba6f7;\">sizeof<\/span>(nums[<span style=\"color:#fab387;\">0<\/span>]);\n\n    <span style=\"color:#89b4fa;\">print_array<\/span>(nums, n);\n    <span style=\"color:#89b4fa;\">printf<\/span>(<span style=\"color:#a6e3a1;\">\"\u5408\u8a08: %d\\n\"<\/span>, <span style=\"color:#89b4fa;\">sum_array<\/span>(nums, n));\n    <span style=\"color:#cba6f7;\">return<\/span> <span style=\"color:#fab387;\">0<\/span>;\n}\n<\/div>\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\u306e\u6e1b\u8870\uff08array decay\uff09<\/strong>\uff1aC\u8a00\u8a9e\u3067\u914d\u5217\u3092\u95a2\u6570\u306b\u6e21\u3057\u305f\u308a\u3001\u30dd\u30a4\u30f3\u30bf\u306b\u4ee3\u5165\u3057\u305f\u308a\u3059\u308b\u3068\u304d\u3001\u914d\u5217\u304c\u5148\u982d\u8981\u7d20\u3078\u306e\u30dd\u30a4\u30f3\u30bf\u306b\u81ea\u52d5\u5909\u63db\u3055\u308c\u308b\u73fe\u8c61\u3002\u300cint arr[5]\u300d\u3092\u95a2\u6570\u306b\u6e21\u3059\u3068\u300cint *\u300d\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002\u3053\u306e\u3068\u304d\u914d\u5217\u30b5\u30a4\u30ba\uff08\u8981\u7d20\u6570\uff09\u306e\u60c5\u5831\u306f\u5931\u308f\u308c\u308b\u305f\u3081\u3001\u30b5\u30a4\u30ba\u306f\u5225\u9014\u5f15\u6570\u3068\u3057\u3066\u6e21\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">5-2. \u69cb\u9020\u4f53\u3092\u5f15\u6570\u306b\u6e21\u3059<\/h3>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#cba6f7;\">typedef struct<\/span> { <span style=\"color:#cba6f7;\">char<\/span> name[<span style=\"color:#fab387;\">50<\/span>]; <span style=\"color:#cba6f7;\">int<\/span> age; } Person;\n\n<span style=\"color:#6c7086;\">\/* const\u4ed8\u304d\u30dd\u30a4\u30f3\u30bf\u6e21\u3057\uff1a\u5909\u66f4\u306a\u3057\u30fb\u30b3\u30d4\u30fc\u30b3\u30b9\u30c8\u306a\u3057\uff08\u63a8\u5968\uff09 *\/<\/span>\n<span style=\"color:#cba6f7;\">void<\/span> <span style=\"color:#89b4fa;\">print_person<\/span>(<span style=\"color:#cba6f7;\">const<\/span> Person *p) {\n    <span style=\"color:#89b4fa;\">printf<\/span>(<span style=\"color:#a6e3a1;\">\"%s: %d\u6b73\\n\"<\/span>, p->name, p->age);\n}\n\n<span style=\"color:#6c7086;\">\/* \u30dd\u30a4\u30f3\u30bf\u6e21\u3057\uff1a\u95a2\u6570\u5185\u3067\u5909\u66f4\u53ef\u80fd *\/<\/span>\n<span style=\"color:#cba6f7;\">void<\/span> <span style=\"color:#89b4fa;\">birthday<\/span>(Person *p) {\n    p->age++;\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\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-function-guide&#038;blog_slug=cc-c-function-guide\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\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\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-c-function-guide&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\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\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" 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;\">RECURSIVE & FUNCPTR<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u518d\u5e30\u95a2\u6570\u3068\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u306e\u57fa\u790e<\/span>\n  <span class=\"section-desc\">\u81ea\u5206\u81ea\u8eab\u3092\u547c\u3073\u51fa\u3059\u518d\u5e30\u3068\u95a2\u6570\u3092\u5909\u6570\u3068\u3057\u3066\u6271\u3046\u95a2\u6570\u30dd\u30a4\u30f3\u30bf<\/span>\n<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">6-1. \u518d\u5e30\u95a2\u6570\uff08recursive function\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u518d\u5e30\u95a2\u6570<\/strong>\u3068\u306f\u3001\u95a2\u6570\u306e\u4e2d\u304b\u3089\u81ea\u5206\u81ea\u8eab\u3092\u547c\u3073\u51fa\u3059\u95a2\u6570\u3067\u3059\u3002\u968e\u4e57\uff08n!\uff09\u30fb\u30d5\u30a3\u30dc\u30ca\u30c3\u30c1\u6570\u5217\u30fb\u30c4\u30ea\u30fc\u69cb\u9020\u306e\u63a2\u7d22\u306a\u3069\u3001\u554f\u984c\u304c\u300c\u540c\u3058\u69cb\u9020\u306e\u5c0f\u3055\u306a\u554f\u984c\u306b\u5206\u5272\u3067\u304d\u308b\u300d\u5834\u5408\u306b\u6709\u52b9\u3067\u3059\u3002\u5fc5\u305a<strong>\u7d42\u4e86\u6761\u4ef6\uff08\u30d9\u30fc\u30b9\u30b1\u30fc\u30b9\uff09<\/strong>\u3092\u8a2d\u3051\u306a\u3044\u3068\u7121\u9650\u30eb\u30fc\u30d7\u306b\u306a\u308a\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>\u518d\u5e30\u95a2\u6570\uff08recursive function\uff09<\/strong>\uff1a\u95a2\u6570\u306e\u51e6\u7406\u306e\u4e2d\u3067\u3001\u81ea\u5206\u81ea\u8eab\u3092\u547c\u3073\u51fa\u3059\u95a2\u6570\u3002\u300c\u554f\u984c\u3092\u3088\u308a\u5c0f\u3055\u306a\u540c\u7a2e\u306e\u554f\u984c\u306b\u5206\u5272\u3057\u3066\u89e3\u304f\u300d\u3068\u3044\u3046\u5206\u5272\u7d71\u6cbb\u6cd5\u306b\u57fa\u3065\u304f\u624b\u6cd5\u3002\u518d\u5e30\u306b\u306f\u5fc5\u305a\u300c\u3053\u308c\u4ee5\u4e0a\u5206\u5272\u3057\u306a\u3044\u7d42\u4e86\u6761\u4ef6\uff08\u30d9\u30fc\u30b9\u30b1\u30fc\u30b9\uff09\u300d\u304c\u5fc5\u8981\u3067\u3001\u306a\u3044\u3068\u7121\u9650\u30eb\u30fc\u30d7\uff08\u30b9\u30bf\u30c3\u30af\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\uff09\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/* \u518d\u5e30\u3067\u968e\u4e57\u3092\u8a08\u7b97\uff085! = 5\u00d74\u00d73\u00d72\u00d71 = 120\uff09 *\/<\/span>\n<span style=\"color:#cba6f7;\">int<\/span> <span style=\"color:#89b4fa;\">factorial<\/span>(<span style=\"color:#cba6f7;\">int<\/span> n) {\n    <span style=\"color:#cba6f7;\">if<\/span> (n <= <span style=\"color:#fab387;\">1<\/span>) <span style=\"color:#cba6f7;\">return<\/span> <span style=\"color:#fab387;\">1<\/span>;  <span style=\"color:#6c7086;\">\/* \u30d9\u30fc\u30b9\u30b1\u30fc\u30b9\uff08\u7d42\u4e86\u6761\u4ef6\uff09*\/<\/span>\n    <span style=\"color:#cba6f7;\">return<\/span> n * <span style=\"color:#89b4fa;\">factorial<\/span>(n - <span style=\"color:#fab387;\">1<\/span>); <span style=\"color:#6c7086;\">\/* \u518d\u5e30\u547c\u3073\u51fa\u3057 *\/<\/span>\n}\n\n<span style=\"color:#6c7086;\">\/* factorial(5)\u306e\u5b9f\u884c\u30a4\u30e1\u30fc\u30b8 *\/<\/span>\n<span style=\"color:#6c7086;\">\/* 5 * factorial(4) *\/<\/span>\n<span style=\"color:#6c7086;\">\/*     4 * factorial(3) *\/<\/span>\n<span style=\"color:#6c7086;\">\/*         3 * factorial(2) *\/<\/span>\n<span style=\"color:#6c7086;\">\/*             2 * factorial(1) *\/<\/span>\n<span style=\"color:#6c7086;\">\/*                 return 1 \u2190 \u3053\u3053\u3067\u7d42\u4e86 *\/<\/span>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">6-2. \u95a2\u6570\u30dd\u30a4\u30f3\u30bf\uff08function pointer\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u95a2\u6570\u30dd\u30a4\u30f3\u30bf<\/strong>\u306f\u3001\u95a2\u6570\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u683c\u7d0d\u3059\u308b\u30dd\u30a4\u30f3\u30bf\u3067\u3059\u3002\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u30fb\u30c6\u30fc\u30d6\u30eb\u99c6\u52d5\u8a2d\u8a08\u30fbqsort\u306e\u6bd4\u8f03\u95a2\u6570\u306a\u3069\u3001\u300c\u51e6\u7406\u306e\u5185\u5bb9\u3092\u52d5\u7684\u306b\u5207\u308a\u66ff\u3048\u305f\u3044\u300d\u5834\u9762\u3067\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#89b4fa;\">#include<\/span> <span style=\"color:#a6e3a1;\">&lt;stdio.h&gt;<\/span>\n\n<span style=\"color:#cba6f7;\">int<\/span> <span style=\"color:#89b4fa;\">add<\/span>(<span style=\"color:#cba6f7;\">int<\/span> a, <span style=\"color:#cba6f7;\">int<\/span> b) { <span style=\"color:#cba6f7;\">return<\/span> a + b; }\n<span style=\"color:#cba6f7;\">int<\/span> <span style=\"color:#89b4fa;\">mul<\/span>(<span style=\"color:#cba6f7;\">int<\/span> a, <span style=\"color:#cba6f7;\">int<\/span> b) { <span style=\"color:#cba6f7;\">return<\/span> a * b; }\n\n<span style=\"color:#cba6f7;\">int<\/span> <span style=\"color:#89b4fa;\">main<\/span>() {\n    <span style=\"color:#6c7086;\">\/* \u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u306e\u5ba3\u8a00\uff1aint (*\u5909\u6570\u540d)(int, int); *\/<\/span>\n    <span style=\"color:#cba6f7;\">int<\/span> (*fp)(<span style=\"color:#cba6f7;\">int<\/span>, <span style=\"color:#cba6f7;\">int<\/span>);\n\n    fp = add;  <span style=\"color:#6c7086;\">\/* add\u95a2\u6570\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u4ee3\u5165 *\/<\/span>\n    <span style=\"color:#89b4fa;\">printf<\/span>(<span style=\"color:#a6e3a1;\">\"add: %d\\n\"<\/span>, fp(<span style=\"color:#fab387;\">3<\/span>, <span style=\"color:#fab387;\">4<\/span>));  <span style=\"color:#6c7086;\">\/* \u2192 7 *\/<\/span>\n\n    fp = mul;  <span style=\"color:#6c7086;\">\/* mul\u95a2\u6570\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u4ee3\u5165\uff08\u5207\u308a\u66ff\u3048\u53ef\u80fd\uff09 *\/<\/span>\n    <span style=\"color:#89b4fa;\">printf<\/span>(<span style=\"color:#a6e3a1;\">\"mul: %d\\n\"<\/span>, fp(<span style=\"color:#fab387;\">3<\/span>, <span style=\"color:#fab387;\">4<\/span>));  <span style=\"color:#6c7086;\">\/* \u2192 12 *\/<\/span>\n    <span style=\"color:#cba6f7;\">return<\/span> <span style=\"color:#fab387;\">0<\/span>;\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\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-c-function-guide&#038;blog_slug=cc-c-function-guide\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\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\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-c-function-guide&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\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\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" 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;\">CLAUDE CODE C FUNC<\/span>\n  <span class=\"section-title\" style=\"display:block;\">Claude Code\u3067C\u8a00\u8a9e\u306e\u95a2\u6570\u3092\u81ea\u52d5\u751f\u6210\u3059\u308b<\/span>\n  <span class=\"section-desc\">\u65e5\u672c\u8a9e\u3067\u8981\u4ef6\u3092\u4f1d\u3048\u308b\u3060\u3051\u3067\u95a2\u6570\u5b9a\u7fa9\u30fb\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u30fb\u30d8\u30c3\u30c0\u30fc\u304c\u5b8c\u6210<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u306e\u95a2\u6570\u8a2d\u8a08\u306f\u300c\u3069\u3093\u306a\u5f15\u6570\u3092\u53d6\u308b\u304b\u300d\u300c\u5024\u6e21\u3057\u304b\u30dd\u30a4\u30f3\u30bf\u6e21\u3057\u304b\u300d\u300c\u623b\u308a\u5024\u306e\u578b\u306f\u4f55\u304b\u300d\u306a\u3069\u3001\u8003\u616e\u3059\u3079\u304d\u70b9\u304c\u591a\u3044\u4f5c\u696d\u3067\u3059\u3002<strong>Claude Code\u3092\u4f7f\u3048\u3070\u3001\u65e5\u672c\u8a9e\u3067\u8981\u4ef6\u3092\u4f1d\u3048\u308b\u3060\u3051\u3067\u95a2\u6570\u5b9a\u7fa9\u30fb\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u30fb\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\u69cb\u6210\u307e\u3067\u81ea\u52d5\u751f\u6210<\/strong>\u3067\u304d\u307e\u3059\u3002<\/p>\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>\u300c\u914d\u5217\u306e\u8981\u7d20\u6570\u3068\u5e73\u5747\u5024\u3092\u8a08\u7b97\u3057\u3066\u8fd4\u3059\u95a2\u6570\u3092\u66f8\u3044\u3066\u3002\u914d\u5217\u30b5\u30a4\u30ba\u3082\u5f15\u6570\u3067\u53d7\u3051\u53d6\u3063\u3066\u300d<\/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\u95a2\u6570\u306e\u5024\u6e21\u3057\u3092\u30dd\u30a4\u30f3\u30bf\u6e21\u3057\u306b\u5909\u3048\u3066\u3002\u95a2\u6570\u5b9a\u7fa9\u3068\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u306e\u4e21\u65b9\u4fee\u6b63\u3057\u3066\u300d<\/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>\u300c5\u306e\u968e\u4e57\u3092\u518d\u5e30\u3067\u8a08\u7b97\u3059\u308bC\u8a00\u8a9e\u306e\u30b3\u30fc\u30c9\u3092\u30b3\u30e1\u30f3\u30c8\u4ed8\u304d\u3067\u66f8\u3044\u3066\u300d<\/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>\u300cqsort\u3067\u6587\u5b57\u5217\u914d\u5217\u3092\u8f9e\u66f8\u9806\u306b\u30bd\u30fc\u30c8\u3059\u308b\u6bd4\u8f03\u95a2\u6570\u3092\u66f8\u3044\u3066\u300d<\/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\u306eC\u8a00\u8a9e\u30b3\u30fc\u30c9\u306e\u30bb\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u9055\u53cd\u306e\u539f\u56e0\u3092\u7279\u5b9a\u3057\u3066\u4fee\u6b63\u3057\u3066\u300d<\/span><\/div>\n\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u306b\u52b9\u679c\u7684\u306a\u306e\u304c\u300c\u65e2\u5b58\u30b3\u30fc\u30c9\u306e\u30c7\u30d0\u30c3\u30b0\u300d\u3067\u3059\u3002\u300c\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u305f\u306e\u306b\u5024\u304c\u5909\u308f\u3089\u306a\u3044\u300d\u300c\u30dd\u30a4\u30f3\u30bf\u6e21\u3057\u306b\u3057\u305f\u3064\u3082\u308a\u304c\u5024\u6e21\u3057\u306b\u306a\u3063\u3066\u3044\u308b\u300d\u3068\u3044\u3063\u305f\u30d0\u30b0\u306f\u3001\u30b3\u30fc\u30c9\u3092Claude Code\u306b\u8cbc\u308a\u4ed8\u3051\u3066\u300c\u554f\u984c\u3092\u7279\u5b9a\u3057\u3066\u4fee\u6b63\u3057\u3066\u300d\u3068\u6307\u793a\u3059\u308b\u3060\u3051\u3067\u5373\u5ea7\u306b\u89e3\u6c7a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f0a\u793e\uff08\u682a\u5f0f\u4f1a\u793eGENAI\uff09\u306e\u5b9f\u611f\u3067\u306f\u3001C\u8a00\u8a9e\u306e\u95a2\u6570\u8a2d\u8a08\u30fb\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u30fb\u30d8\u30c3\u30c0\u30fc\u69cb\u6210\u306a\u3069\u306e\u5b9a\u578b\u4f5c\u696d\u306b\u304b\u304b\u308b\u6642\u9593\u304c\u3001Claude Code\u6d3b\u7528\u5f8c\u306f\u7d0470%\u524a\u6e1b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u7279\u306b\u300c\u8907\u6570\u30d5\u30a1\u30a4\u30eb\u3078\u306e\u95a2\u6570\u5206\u5272\u300d\u300c\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\u306e\u69cb\u6210\u300d\u306a\u3069\u3001\u8a2d\u8a08\u5224\u65ad\u304c\u5fc5\u8981\u306a\u4f5c\u696d\u3067\u306e\u52b9\u679c\u304c\u5927\u304d\u3044\u3067\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\u3067\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u3092\u66f8\u304d\u5fd8\u308c\u305f\u3068\u304d\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306f\u300cimplicit declaration of function\u300d\u3067\u3059\u3002\u3053\u306e\u30a8\u30e9\u30fc\u304c\u51fa\u305f\u3089\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u304c\u5fc5\u8981\u306a\u30b5\u30a4\u30f3\u3067\u3059\u3002Claude Code\u306b\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3068\u30b3\u30fc\u30c9\u3092\u898b\u305b\u308b\u3068\u3001\u3069\u3053\u306b\u5ba3\u8a00\u3092\u8ffd\u52a0\u3059\u3079\u304d\u304b\u3082\u542b\u3081\u3066\u4fee\u6b63\u30b3\u30fc\u30c9\u3092\u8fd4\u3057\u3066\u304f\u308c\u307e\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><strong>\u95a2\u6570<\/strong>\u306f\u51e6\u7406\u3092\u90e8\u54c1\u5316\u3057\u3066\u518d\u5229\u7528\u53ef\u80fd\u306b\u3059\u308b\u4ed5\u7d44\u307f\u3002\u623b\u308a\u5024\u578b\u30fb\u95a2\u6570\u540d\u30fb\u5f15\u6570\u30ea\u30b9\u30c8\u30fbreturn\u306e4\u8981\u7d20\u304c\u57fa\u672c<\/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>\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00<\/strong>\u306f\u95a2\u6570\u3092\u4f7f\u3046\u524d\u306b\u578b\u60c5\u5831\u3060\u3051\u3092\u30b3\u30f3\u30d1\u30a4\u30e9\u306b\u4f1d\u3048\u308b\u5ba3\u8a00\u3002\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304f\u306e\u304c\u4e00\u822c\u7684<\/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>\u5024\u6e21\u3057<\/strong>\u306f\u5909\u6570\u306e\u30b3\u30d4\u30fc\u3092\u6e21\u3059\uff08\u547c\u3073\u51fa\u3057\u5143\u306f\u5909\u308f\u3089\u306a\u3044\uff09\u3002<strong>\u53c2\u7167\u6e21\u3057<\/strong>\u306f\u30a2\u30c9\u30ec\u30b9\uff08\u30dd\u30a4\u30f3\u30bf\uff09\u3092\u6e21\u3059\uff08\u5143\u306e\u5909\u6570\u3092\u5909\u66f4\u3067\u304d\u308b\uff09<\/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>\u914d\u5217\u306f\u81ea\u52d5\u7684\u306b\u30dd\u30a4\u30f3\u30bf\u306b\u5909\u63db<\/strong>\u3055\u308c\u3066\u6e21\u3055\u308c\u308b\u3002\u30b5\u30a4\u30ba\u60c5\u5831\u306f\u5931\u308f\u308c\u308b\u305f\u3081\u5225\u5f15\u6570\u3067\u6e21\u3059<\/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>\u69cb\u9020\u4f53\u5f15\u6570<\/strong>\u306fconst\u30dd\u30a4\u30f3\u30bf\u6e21\u3057\u304c\u52b9\u7387\u7684\uff08\u30b3\u30d4\u30fc\u30b3\u30b9\u30c8\u524a\u6e1b\uff0b\u8aa4\u5909\u66f4\u9632\u6b62\uff09<\/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>\u518d\u5e30\u95a2\u6570<\/strong>\u306b\u306f\u5fc5\u305a\u7d42\u4e86\u6761\u4ef6\uff08\u30d9\u30fc\u30b9\u30b1\u30fc\u30b9\uff09\u304c\u5fc5\u8981\u3002\u306a\u3044\u3068\u30b9\u30bf\u30c3\u30af\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc<\/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<\/strong>\u3067C\u8a00\u8a9e\u306e\u95a2\u6570\u8a2d\u8a08\u30fb\u30c7\u30d0\u30c3\u30b0\u30fb\u6700\u9069\u5316\u3092\u5927\u5e45\u306b\u52b9\u7387\u5316\u3067\u304d\u308b<\/span><\/div>\n\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">C\u8a00\u8a9e\u306e\u95a2\u6570\u8a2d\u8a08\u30fb\u30c7\u30d0\u30c3\u30b0\u3092Claude Code\u00d7AI\u9b3c\u7ba1\u7406\u3067\u52a0\u901f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5024\u6e21\u3057\u30fb\u53c2\u7167\u6e21\u3057\u30fb\u518d\u5e30\u30fb\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u306a\u3069\u8907\u96d1\u306aC\u8a00\u8a9e\u306e\u95a2\u6570\u8a2d\u8a08\u3092\u3001Claude Code\u3092\u6d3b\u7528\u3057\u3066\u7d20\u65e9\u304f\u6b63\u78ba\u306b\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u3092\u3054\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\">C\u8a00\u8a9e\u306e\u95a2\u6570\u8a2d\u8a08\u3067\u8ff7\u3063\u305f\u3068\u304d\u3001Claude Code\u306b\u300c\u3053\u3093\u306a\u52d5\u304d\u3092\u3059\u308b\u95a2\u6570\u304c\u5fc5\u8981\u300d\u3068\u65e5\u672c\u8a9e\u3067\u4f1d\u3048\u308b\u3060\u3051\u3067\u3001\u5f15\u6570\u306e\u578b\u30fb\u623b\u308a\u5024\u30fb\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u307e\u3067\u542b\u3080\u5b8c\u5168\u306a\u30b3\u30fc\u30c9\u304c\u51fa\u3066\u304d\u307e\u3059\u3002\u5b66\u7fd2\u3068\u5b9f\u88c5\u306e\u4e21\u65b9\u3067\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<div style=\"background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);border-radius:16px;padding:36px 32px;margin:48px 0 16px;color:#fff;\">\n  <p style=\"font-size:13px;font-weight:700;color:#dc2626;letter-spacing:2px;margin:0 0 12px;\">NEXT STEP<\/p>\n  <p style=\"font-size:22px;font-weight:800;line-height:1.5;margin:0 0 20px;\">\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=\"background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);border-radius:12px;padding:24px;max-width:560px;margin:0 auto;\">\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;margin:0 0 12px;\">AI\u9b3c\u7ba1\u7406<\/p>\n    <p style=\"font-size:14px;color:rgba(255,255,255,0.75);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;\">\n      <a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=article&utm_campaign=cc-c-function-guide&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\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\u306e\u95a2\u6570\u3068\u30de\u30af\u30ed\uff08#define\uff09\u306f\u3069\u3061\u3089\u3092\u4f7f\u3046\u3079\u304d\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u57fa\u672c\u7684\u306b\u306f\u95a2\u6570\u3092\u4f7f\u3046\u3053\u3068\u3092\u63a8\u5968\u3057\u307e\u3059\u3002\u30de\u30af\u30ed\u306f\u300c\u578b\u30c1\u30a7\u30c3\u30af\u304c\u306a\u3044\u300d\u300c\u30c7\u30d0\u30c3\u30b0\u304c\u96e3\u3057\u3044\u300d\u300c\u526f\u4f5c\u7528\u304c\u767a\u751f\u3057\u3084\u3059\u3044\uff08\u5f15\u6570\u306b\u5f0f\u3092\u6e21\u3057\u305f\u5834\u5408\uff09\u300d\u3068\u3044\u3063\u305f\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002\u901f\u5ea6\u304c\u91cd\u8981\u3067\u578b\u304c\u56fa\u5b9a\u306e\u5834\u5408\u306finline\u95a2\u6570\uff08C99\u4ee5\u964d\uff09\u304c\u5b89\u5168\u306a\u4ee3\u66ff\u624b\u6bb5\u3067\u3059\u3002#define\u30de\u30af\u30ed\u306f\u5b9a\u6570\u5b9a\u7fa9\u3084\u6761\u4ef6\u30b3\u30f3\u30d1\u30a4\u30eb\u306b\u9650\u5b9a\u3057\u3066\u4f7f\u3046\u306e\u304c\u73fe\u4ee3\u306e\u63a8\u5968\u30b9\u30bf\u30a4\u30eb\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u95a2\u6570\u306e\u623b\u308a\u5024\u3067\u30a8\u30e9\u30fc\u3092\u8fd4\u3059\u65b9\u6cd5\u306f\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. C\u8a00\u8a9e\u3067\u306f\u95a2\u6570\u306e\u623b\u308a\u5024\u3067\u30a8\u30e9\u30fc\u3092\u901a\u77e5\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u6210\u529f\u6642\u306f0\uff08\u307e\u305f\u306f\u6b63\u306e\u5024\uff09\u3001\u5931\u6557\u6642\u306f\u8ca0\u306e\u5024\u3084NULL\u3092\u8fd4\u3059\u30d1\u30bf\u30fc\u30f3\u304c\u5e83\u304f\u4f7f\u308f\u308c\u307e\u3059\u3002stdlib.h\u306e\u300cerrno\u300d\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u306b\u8a73\u7d30\u306a\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u624b\u6cd5\u3082\u4f7f\u308f\u308c\u307e\u3059\u3002\u8907\u6570\u306e\u60c5\u5831\u3092\u8fd4\u3057\u305f\u3044\u5834\u5408\u306f\u69cb\u9020\u4f53\u3092\u8fd4\u3059\u304b\u3001\u30dd\u30a4\u30f3\u30bf\u5f15\u6570\u3067\u8ffd\u52a0\u60c5\u5831\u3092\u6e21\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u306f\u3044\u3064\u7701\u7565\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u95a2\u6570\u5b9a\u7fa9\u304cmain()\u3088\u308a\u524d\uff08\u30d5\u30a1\u30a4\u30eb\u306e\u4e0a\u90e8\uff09\u306b\u3042\u308b\u5834\u5408\u306f\u3001\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u3092\u7701\u7565\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u5b9f\u52d9\u3067\u306f\u3001\u95a2\u6570\u306e\u9806\u5e8f\u306b\u4f9d\u5b58\u3057\u306a\u3044\u3088\u3046\u5168\u95a2\u6570\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u3092\u30d5\u30a1\u30a4\u30eb\u5148\u982d\u304b\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304f\u30b9\u30bf\u30a4\u30eb\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u30b3\u30f3\u30d1\u30a4\u30e9\u306b\u3088\u3063\u3066\u306f\u5ba3\u8a00\u306a\u3057\u3067\u306e\u547c\u3073\u51fa\u3057\u3092\u8b66\u544a\u3084\u30a8\u30e9\u30fc\u306b\u3059\u308b\u305f\u3081\u3001\u5e38\u306b\u660e\u793a\u7684\u306b\u5ba3\u8a00\u3059\u308b\u7fd2\u6163\u3092\u3064\u3051\u308b\u3053\u3068\u3092\u52e7\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u518d\u5e30\u95a2\u6570\u3067\u300c\u30b9\u30bf\u30c3\u30af\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u300d\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3069\u3046\u76f4\u3057\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u518d\u5e30\u306e\u7d42\u4e86\u6761\u4ef6\uff08\u30d9\u30fc\u30b9\u30b1\u30fc\u30b9\uff09\u3092\u898b\u76f4\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u7d42\u4e86\u6761\u4ef6\u306b\u5230\u9054\u3057\u306a\u3044\u3068\u518d\u5e30\u304c\u7121\u9650\u306b\u7d9a\u304d\u3001\u30b9\u30bf\u30c3\u30af\uff08\u95a2\u6570\u547c\u3073\u51fa\u3057\u306e\u8a18\u9332\u9818\u57df\uff09\u304c\u6ea2\u308c\u307e\u3059\u3002\u539f\u56e0\u306f\u300c\u7d42\u4e86\u6761\u4ef6\u306e\u8a18\u8ff0\u30df\u30b9\u300d\u300c\u7d42\u4e86\u6761\u4ef6\u306b\u5230\u9054\u3067\u304d\u306a\u3044\u5165\u529b\u5024\u300d\u304c\u591a\u3044\u3067\u3059\u3002printf\u3067\u73fe\u5728\u306e\u5f15\u6570\u5024\u3092\u51fa\u529b\u3059\u308b\u30c7\u30d0\u30c3\u30b0\u304b\u3001Claude Code\u306b\u30b3\u30fc\u30c9\u3092\u8cbc\u308a\u4ed8\u3051\u3066\u300c\u7d42\u4e86\u6761\u4ef6\u3092\u78ba\u8a8d\u3057\u3066\u300d\u3068\u805e\u304f\u306e\u304c\u6700\u901f\u306e\u89e3\u6c7a\u7b56\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. C\u8a00\u8a9e\u3067\u8907\u6570\u306e\u5024\u3092\u95a2\u6570\u304b\u3089\u8fd4\u3059\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u65b9\u6cd5\u306f3\u3064\u3042\u308a\u307e\u3059\u3002\u2460\u69cb\u9020\u4f53\u3092\u8fd4\u3059\uff08\u6700\u3082C\u8a00\u8a9e\u3089\u3057\u3044\u65b9\u6cd5\uff09\u2461\u30dd\u30a4\u30f3\u30bf\u5f15\u6570\u3092\u4f7f\u3063\u3066\u8907\u6570\u306e\u5909\u6570\u306b\u66f8\u304d\u8fbc\u3080\u300c\u51fa\u529b\u5f15\u6570\u30d1\u30bf\u30fc\u30f3\u300d\u2462\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u306b\u66f8\u304d\u8fbc\u3080\uff08\u975e\u63a8\u5968\uff09\u3002\u63a8\u5968\u306f\u2460\u307e\u305f\u306f\u2461\u3067\u3059\u3002\u4f8b\u3048\u3070\u300cint *max, int *min\u300d\u306e\u3088\u3046\u306a\u30dd\u30a4\u30f3\u30bf\u5f15\u6570\u30922\u3064\u53d7\u3051\u53d6\u3063\u3066\u66f8\u304d\u8fbc\u3080\u65b9\u6cd5\u304c\u5b9f\u52d9\u3067\u3088\u304f\u4f7f\u308f\u308c\u307e\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\u306e\u95a2\u6570\u3068\u30de\u30af\u30ed\uff08#define\uff09\u306f\u3069\u3061\u3089\u3092\u4f7f\u3046\u3079\u304d\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u57fa\u672c\u7684\u306b\u306f\u95a2\u6570\u3092\u4f7f\u3046\u3053\u3068\u3092\u63a8\u5968\u3057\u307e\u3059\u3002\u30de\u30af\u30ed\u306f\u300c\u578b\u30c1\u30a7\u30c3\u30af\u304c\u306a\u3044\u300d\u300c\u30c7\u30d0\u30c3\u30b0\u304c\u96e3\u3057\u3044\u300d\u300c\u526f\u4f5c\u7528\u304c\u767a\u751f\u3057\u3084\u3059\u3044\uff08\u5f15\u6570\u306b\u5f0f\u3092\u6e21\u3057\u305f\u5834\u5408\uff09\u300d\u3068\u3044\u3063\u305f\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002\u901f\u5ea6\u304c\u91cd\u8981\u3067\u578b\u304c\u56fa\u5b9a\u306e\u5834\u5408\u306finline\u95a2\u6570\uff08C99\u4ee5\u964d\uff09\u304c\u5b89\u5168\u306a\u4ee3\u66ff\u624b\u6bb5\u3067\u3059\u3002#define\u30de\u30af\u30ed\u306f\u5b9a\u6570\u5b9a\u7fa9\u3084\u6761\u4ef6\u30b3\u30f3\u30d1\u30a4\u30eb\u306b\u9650\u5b9a\u3057\u3066\u4f7f\u3046\u306e\u304c\u73fe\u4ee3\u306e\u63a8\u5968\u30b9\u30bf\u30a4\u30eb\u3067\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"\u95a2\u6570\u306e\u623b\u308a\u5024\u3067\u30a8\u30e9\u30fc\u3092\u8fd4\u3059\u65b9\u6cd5\u306f\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"C\u8a00\u8a9e\u3067\u306f\u95a2\u6570\u306e\u623b\u308a\u5024\u3067\u30a8\u30e9\u30fc\u3092\u901a\u77e5\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u6210\u529f\u6642\u306f0\uff08\u307e\u305f\u306f\u6b63\u306e\u5024\uff09\u3001\u5931\u6557\u6642\u306f\u8ca0\u306e\u5024\u3084NULL\u3092\u8fd4\u3059\u30d1\u30bf\u30fc\u30f3\u304c\u5e83\u304f\u4f7f\u308f\u308c\u307e\u3059\u3002stdlib.h\u306e\u300cerrno\u300d\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u306b\u8a73\u7d30\u306a\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u624b\u6cd5\u3082\u4f7f\u308f\u308c\u307e\u3059\u3002\u8907\u6570\u306e\u60c5\u5831\u3092\u8fd4\u3057\u305f\u3044\u5834\u5408\u306f\u69cb\u9020\u4f53\u3092\u8fd4\u3059\u304b\u3001\u30dd\u30a4\u30f3\u30bf\u5f15\u6570\u3067\u8ffd\u52a0\u60c5\u5831\u3092\u6e21\u3057\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u306f\u3044\u3064\u7701\u7565\u3067\u304d\u307e\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u95a2\u6570\u5b9a\u7fa9\u304cmain()\u3088\u308a\u524d\uff08\u30d5\u30a1\u30a4\u30eb\u306e\u4e0a\u90e8\uff09\u306b\u3042\u308b\u5834\u5408\u306f\u3001\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u3092\u7701\u7565\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u5b9f\u52d9\u3067\u306f\u3001\u95a2\u6570\u306e\u9806\u5e8f\u306b\u4f9d\u5b58\u3057\u306a\u3044\u3088\u3046\u5168\u95a2\u6570\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u3092\u30d5\u30a1\u30a4\u30eb\u5148\u982d\u304b\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304f\u30b9\u30bf\u30a4\u30eb\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u30b3\u30f3\u30d1\u30a4\u30e9\u306b\u3088\u3063\u3066\u306f\u5ba3\u8a00\u306a\u3057\u3067\u306e\u547c\u3073\u51fa\u3057\u3092\u8b66\u544a\u3084\u30a8\u30e9\u30fc\u306b\u3059\u308b\u305f\u3081\u3001\u5e38\u306b\u660e\u793a\u7684\u306b\u5ba3\u8a00\u3059\u308b\u7fd2\u6163\u3092\u3064\u3051\u308b\u3053\u3068\u3092\u52e7\u3081\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"\u518d\u5e30\u95a2\u6570\u3067\u300c\u30b9\u30bf\u30c3\u30af\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u300d\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3069\u3046\u76f4\u3057\u307e\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u518d\u5e30\u306e\u7d42\u4e86\u6761\u4ef6\uff08\u30d9\u30fc\u30b9\u30b1\u30fc\u30b9\uff09\u3092\u898b\u76f4\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u7d42\u4e86\u6761\u4ef6\u306b\u5230\u9054\u3057\u306a\u3044\u3068\u518d\u5e30\u304c\u7121\u9650\u306b\u7d9a\u304d\u3001\u30b9\u30bf\u30c3\u30af\uff08\u95a2\u6570\u547c\u3073\u51fa\u3057\u306e\u8a18\u9332\u9818\u57df\uff09\u304c\u6ea2\u308c\u307e\u3059\u3002\u539f\u56e0\u306f\u300c\u7d42\u4e86\u6761\u4ef6\u306e\u8a18\u8ff0\u30df\u30b9\u300d\u300c\u7d42\u4e86\u6761\u4ef6\u306b\u5230\u9054\u3067\u304d\u306a\u3044\u5165\u529b\u5024\u300d\u304c\u591a\u3044\u3067\u3059\u3002printf\u3067\u73fe\u5728\u306e\u5f15\u6570\u5024\u3092\u51fa\u529b\u3059\u308b\u30c7\u30d0\u30c3\u30b0\u304b\u3001Claude Code\u306b\u30b3\u30fc\u30c9\u3092\u8cbc\u308a\u4ed8\u3051\u3066\u300c\u7d42\u4e86\u6761\u4ef6\u3092\u78ba\u8a8d\u3057\u3066\u300d\u3068\u805e\u304f\u306e\u304c\u6700\u901f\u306e\u89e3\u6c7a\u7b56\u3067\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"C\u8a00\u8a9e\u3067\u8907\u6570\u306e\u5024\u3092\u95a2\u6570\u304b\u3089\u8fd4\u3059\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u65b9\u6cd5\u306f3\u3064\u3042\u308a\u307e\u3059\u3002\u2460\u69cb\u9020\u4f53\u3092\u8fd4\u3059\uff08\u6700\u3082C\u8a00\u8a9e\u3089\u3057\u3044\u65b9\u6cd5\uff09\u2461\u30dd\u30a4\u30f3\u30bf\u5f15\u6570\u3092\u4f7f\u3063\u3066\u8907\u6570\u306e\u5909\u6570\u306b\u66f8\u304d\u8fbc\u3080\u300c\u51fa\u529b\u5f15\u6570\u30d1\u30bf\u30fc\u30f3\u300d\u2462\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u306b\u66f8\u304d\u8fbc\u3080\uff08\u975e\u63a8\u5968\uff09\u3002\u63a8\u5968\u306f\u2460\u307e\u305f\u306f\u2461\u3067\u3059\u3002\u4f8b\u3048\u3070\u300cint *max, int *min\u300d\u306e\u3088\u3046\u306a\u30dd\u30a4\u30f3\u30bf\u5f15\u6570\u30922\u3064\u53d7\u3051\u53d6\u3063\u3066\u66f8\u304d\u8fbc\u3080\u65b9\u6cd5\u304c\u5b9f\u52d9\u3067\u3088\u304f\u4f7f\u308f\u308c\u307e\u3059\u3002\"\n      }\n    }\n  ]\n}\n<\/script>\n\n\n\n<p class=\"wp-block-paragraph\">\u3055\u3089\u306b\u5b9f\u52d9\u7684\u306aC\u8a00\u8a9e\u95a2\u6570\u306e\u30d1\u30bf\u30fc\u30f3\u3068\u3057\u3066\u3001<strong>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570<\/strong>\u304c\u3042\u308a\u307e\u3059\u3002\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3068\u306f\u300c\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u3092\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\u3001\u9069\u5207\u306a\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u547c\u3073\u51fa\u3059\u300d\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306e<code>qsort()<\/code>\u304c\u305d\u306e\u5178\u578b\u4f8b\u3067\u3001\u30bd\u30fc\u30c8\u9806\u5e8f\u3092\u6c7a\u3081\u308b\u6bd4\u8f03\u95a2\u6570\u3092\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6e21\u3059\u3053\u3068\u3067\u3001\u6c4e\u7528\u7684\u306a\u30bd\u30fc\u30c8\u51e6\u7406\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n\n\/* qsort\u306b\u6e21\u3059\u6bd4\u8f03\u95a2\u6570\uff08\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\uff09 *\/\nint compare_asc(const void *a, const void *b) {\n    return (*(int*)a - *(int*)b);  \/* \u6607\u9806 *\/\n}\n\nint compare_desc(const void *a, const void *b) {\n    return (*(int*)b - *(int*)a);  \/* \u964d\u9806 *\/\n}\n\nint main() {\n    int nums[] = {50, 10, 30, 20, 40};\n    int n = sizeof(nums) \/ sizeof(nums[0]);\n\n    \/* \u6607\u9806\u30bd\u30fc\u30c8 *\/\n    qsort(nums, n, sizeof(int), compare_asc);\n    for (int i = 0; i &lt; n; i++) printf(\"%d \", nums[i]);\n    printf(\"\n\");  \/* -> 10 20 30 40 50 *\/\n\n    \/* \u964d\u9806\u30bd\u30fc\u30c8 *\/\n    qsort(nums, n, sizeof(int), compare_desc);\n    for (int i = 0; i &lt; n; i++) printf(\"%d \", nums[i]);\n    printf(\"\n\");  \/* -> 50 40 30 20 10 *\/\n    return 0;\n}\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">qsort\u306e\u6bd4\u8f03\u95a2\u6570\u306f\u300c\u8ca0\u306e\u5024\u3092\u8fd4\u3059\u3068\u7b2c1\u5f15\u6570\u304c\u5148\u300d\u300c\u6b63\u306e\u5024\u3092\u8fd4\u3059\u3068\u7b2c2\u5f15\u6570\u304c\u5148\u300d\u300c0\u306a\u3089\u540c\u9806\u300d\u3068\u3044\u3046\u30eb\u30fc\u30eb\u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002\u3053\u306e\u4ed5\u7d44\u307f\u3092\u4f7f\u3048\u3070\u3001\u69cb\u9020\u4f53\u914d\u5217\u3092\u7279\u5b9a\u306e\u30e1\u30f3\u30d0\uff08\u540d\u524d\u30fb\u5e74\u9f62\u30fb\u30b9\u30b3\u30a2\u306a\u3069\uff09\u3067\u30bd\u30fc\u30c8\u3059\u308b\u72ec\u81ea\u306e\u6bd4\u8f03\u95a2\u6570\u3082\u4f5c\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u8a00\u8a9e\u306e\u95a2\u6570\u3092\u4f53\u7cfb\u7684\u306b\u5b66\u3076\u3053\u3068\u3067\u3001\u4ed6\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\uff08C++\u30fbJava\u30fbPython\u30fbRust\uff09\u306e\u95a2\u6570\u30fb\u30e1\u30bd\u30c3\u30c9\u306e\u6982\u5ff5\u3082\u81ea\u7136\u3068\u7406\u89e3\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002C\u8a00\u8a9e\u306f\u300c\u8a00\u8a9e\u306e\u4ed5\u69d8\u304c\u30b7\u30f3\u30d7\u30eb\u3067\u52d5\u4f5c\u304c\u900f\u660e\u300d\u306a\u5206\u3001\u95a2\u6570\u30fb\u30dd\u30a4\u30f3\u30bf\u30fb\u30e1\u30e2\u30ea\u306e\u52d5\u304d\u3092\u6df1\u304f\u7406\u89e3\u3067\u304d\u308b\u5b66\u7fd2\u8a00\u8a9e\u3068\u3057\u3066\u4eca\u3082\u6839\u5f37\u3044\u4eba\u6c17\u304c\u3042\u308a\u307e\u3059\u3002\u73fe\u5834\u3067\u4f7f\u308f\u308c\u308b\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30fb\u7d44\u307f\u8fbc\u307f\u958b\u767a\u30fb\u30b2\u30fc\u30e0\u30a8\u30f3\u30b8\u30f3\u958b\u767a\u306e\u591a\u304f\u304cC\u8a00\u8a9e\u30d9\u30fc\u30b9\u3067\u3042\u308a\u3001\u3053\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u305f\u95a2\u6570\u306e\u6982\u5ff5\u306f\u76f4\u63a5\u696d\u52d9\u306b\u5f79\u7acb\u3064\u30b9\u30ad\u30eb\u3067\u3059\u3002<\/p>\n\n\n","protected":false},"excerpt":{"rendered":"<p>C\u8a00\u8a9e\u306e\u95a2\u6570\u3092\u5b8c\u5168\u89e3\u8aac\u3002\u95a2\u6570\u306e\u5b9a\u7fa9\u3068\u547c\u3073\u51fa\u3057\u30fb\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u30fb\u5f15\u6570\uff08\u5024\u6e21\u3057\/\u53c2\u7167\u6e21\u3057\uff09\u30fb\u623b\u308a\u5024\u30fb\u914d\u5217\/\u69cb\u9020\u4f53\u5f15\u6570\u30fb\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u30fb\u518d\u5e30\u95a2\u6570\u307e\u3067\u3001\u30b3\u30fc\u30c9\u4f8b\u4ed8\u304d\u3067\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u5411\u3051\u306b\u89e3\u8aac\u3002<\/p>\n","protected":false},"author":1,"featured_media":17919,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"sitemap_hide":"","_veu_custom_css":"","vkexunit_cta_each_option":"","footnotes":"","rank_math_description":"C\u8a00\u8a9e\u306e\u95a2\u6570\u3092\u5b8c\u5168\u89e3\u8aac\u3002\u95a2\u6570\u306e\u5b9a\u7fa9\u3068\u547c\u3073\u51fa\u3057\u30fb\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5ba3\u8a00\u30fb\u5f15\u6570\uff08\u5024\u6e21\u3057\/\u53c2\u7167\u6e21\u3057\uff09\u30fb\u623b\u308a\u5024\u30fb\u914d\u5217\/\u69cb\u9020\u4f53\u5f15\u6570\u30fb\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u30fb\u518d\u5e30\u95a2\u6570\u307e\u3067\u3001\u30b3\u30fc\u30c9\u4f8b\u4ed8\u304d\u3067\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u5411\u3051\u306b\u89e3\u8aac\u3002","rank_math_focus_keyword":"C\u8a00\u8a9e 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