{"url":"https://yohhoy.hatenadiary.jp/entry/20241001/p1","width":"100%","published":"2024-10-01 00:00:00","provider_url":"https://hatena.blog","blog_title":"yohhoy\u306e\u65e5\u8a18","description":"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9eC\u306b\u304a\u3051\u308b\u914d\u5217\u6dfb\u5b57\u6f14\u7b97\u5b50(array subscript operator)[]\u306e\u4f1d\u7d71\u7684\u304b\u3064\u5947\u5999\u306a\u8a00\u8a9e\u4ed5\u69d8\u306b\u95a2\u3057\u3066\u3001\u6b21\u671fC2y\u3092\u30bf\u30fc\u30b2\u30c3\u30c8\u3068\u3057\u305f\u4ed5\u69d8\u4fee\u6b63\u304c\u63d0\u6848\u3055\u308c\u3066\u3044\u308b\u3002\u5c0f\u30cd\u30bf\u4ee5\u5916\u306e\u4f7f\u3044\u9053\u3082\u306a\u304f\u4fee\u6b63\u3055\u308c\u3066\u826f\u3044\u9803\u5408\u3044\u304b\u3082\u306d\uff1f*1 const char msg[] = \"Hello\"; const char *p = msg + 1; assert( 1[msg] == 'e' ); // OK: msg[1]\u3068\u7b49\u4fa1 assert( msg[-1] != 0 ); // NG: \u672a\u5b9a\u7fa9\u52d5\u4f5c assert( p[-1] == 'H' ); // OK: *(p-1)\u3068\u7b49\u4fa1 // N\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyohhoy.hatenadiary.jp%2Fentry%2F20241001%2Fp1\" title=\"\u914d\u5217\u6dfb\u5b57\u6f14\u7b97\u5b50\u306e\u5c0f\u3055\u306a\u6539\u5584\u6848 for C2y - 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/","height":"190","title":"\u914d\u5217\u6dfb\u5b57\u6f14\u7b97\u5b50\u306e\u5c0f\u3055\u306a\u6539\u5584\u6848 for C2y","type":"rich","provider_name":"Hatena Blog","categories":["C2y"],"author_name":"yohhoy","blog_url":"https://yohhoy.hatenadiary.jp/","version":"1.0","image_url":null}