{"version":"1.0","height":"190","title":"\u6570\u5b57\u304b\u3089\u6570\u5024\u3078\u306e\u5909\u63db: ch - '0'","blog_url":"https://yohhoy.hatenadiary.jp/","type":"rich","author_url":"https://blog.hatena.ne.jp/yohhoy/","width":"100%","published":"2017-01-03 00:00:00","provider_url":"https://hatena.blog","blog_title":"yohhoy\u306e\u65e5\u8a18","description":"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9eC/C++\u306b\u304a\u3051\u308b\u30011\u6587\u5b57\u306e\u6570\u5b57\u304b\u30891\u6841\u306e\u6574\u6570\u5024\u3078\u5909\u63db\u3059\u308b\u30a4\u30c7\u30a3\u30aa\u30e0 ch - '0' \u306b\u3064\u3044\u3066\u3002C/C++\u8a00\u8a9e\u4ed5\u69d8\u3067\u306f\u3001\u6570\u5b57\u306e\u6587\u5b57\u30b3\u30fc\u30c9'0'\u301c'9'\u304c\u305d\u306e\u4e26\u3073\u9806\u3067\u9023\u7d9a\u304b\u3064\u96a3\u63a5\u3059\u308b\u3068\u4fdd\u8a3c\u3059\u308b\u3002\u3053\u306e\u305f\u3081\u5909\u63db\u5143\u6587\u5b57ch\u304b\u3089\u6570\u5b570\u306e\u6587\u5b57\u30b3\u30fc\u30c9'0'\u3092\u6e1b\u7b97\u3059\u308b\u4e0b\u8a18\u51e6\u7406\u306f\u3001\u51e6\u7406\u7cfb\u3084\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306e\u6587\u5b57\u96c6\u5408\u306b\u3088\u3089\u305a\u6b63\u5e38\u52d5\u4f5c\u3059\u308b\u3002*1 int ch = /*...*/; assert(isdigit(ch)); // ch\u306f\u4efb\u610f\u306e\u6570\u5b57 int n = ch - '0'; // \u6570\u5b57\u304b\u3089\u6570\u5024\u3078\u5909\u63db C99 5.2.1/p3\u3088\u308a\u4e00\u90e8\u5f15\u7528\uff08\u4e0b\u7dda\u90e8\u306f\u5f37\u8abf\uff09\u3002 3 Both the basic so\u2026","provider_name":"Hatena Blog","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyohhoy.hatenadiary.jp%2Fentry%2F20170103%2Fp1\" title=\"\u6570\u5b57\u304b\u3089\u6570\u5024\u3078\u306e\u5909\u63db: ch - &#39;0&#39; - 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_name":"yohhoy","url":"https://yohhoy.hatenadiary.jp/entry/20170103/p1","categories":["C","C++"]}