{"description":"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9eC\u306e\u6b21\u671f\u6a19\u6e96C2y\u3067\u306f\u3001\u914d\u5217\u8981\u7d20\u6570\u3092\u5b89\u5168\u306b\u53d6\u5f97\u3059\u308b_Countof\u6f14\u7b97\u5b50\u304c\u5c0e\u5165\u3055\u308c\u308b\u3002\u30aa\u30da\u30e9\u30f3\u30c9\u306b\u914d\u5217\u578b\u3092\u8981\u6c42\u3059\u308b\u3053\u3068\u4ee5\u5916\u306f\u3001\u69cb\u6587\u898f\u5247\u7684\u306bsizeof\u6f14\u7b97\u5b50\u3068\u307b\u307c\u540c\u3058\u3002 // C2y int fibs[] = { 1, 1, 2, 3, 5, 8, 13, 21 }; static_assert(_Countof(fibs) == 8); // OK // \u6a19\u6e96\u30d8\u30c3\u30c0<stdcountof.h>\u3067\u5b9a\u7fa9\u3055\u308c\u308b\u30de\u30af\u30ed\u5229\u7528\u3059\u308b\u3068 // \u5c0f\u6587\u5b57\u30ad\u30fc\u30ef\u30fc\u30c9\u98a8\u306b countof(fibs) \u3068\u8a18\u8ff0\u53ef\u80fd\u3068\u306a\u308b #include <stdcountof.h> static_assert(si\u2026","image_url":null,"author_name":"yohhoy","title":"\u914d\u5217\u8981\u7d20\u6570\u306e\u53d6\u5f97 in \u6a19\u6e96C","blog_title":"yohhoy\u306e\u65e5\u8a18","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyohhoy.hatenadiary.jp%2Fentry%2F20250520%2Fp1\" title=\"\u914d\u5217\u8981\u7d20\u6570\u306e\u53d6\u5f97 in \u6a19\u6e96C - yohhoy\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/yohhoy/","version":"1.0","width":"100%","url":"https://yohhoy.hatenadiary.jp/entry/20250520/p1","provider_url":"https://hatena.blog","blog_url":"https://yohhoy.hatenadiary.jp/","categories":["C","C2y"],"provider_name":"Hatena Blog","height":"190","type":"rich","published":"2025-05-20 00:00:00"}