{"author_url":"https://blog.hatena.ne.jp/cadr/","version":"1.0","blog_title":"cadr\u306e\u65e5\u8a18","published":"2009-03-25 00:07:13","title":" \u578bvoid *\u3092\u5f15\u6570\u306b\u3068\u308b\u95a2\u6570\u306e\u4f7f\u3044\u65b9","author_name":"cadr","blog_url":"https://cadr.hatenadiary.org/","url":"https://cadr.hatenadiary.org/entry/20090325/1237993633","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","categories":["CS"],"type":"rich","image_url":null,"description":"C\u8a00\u8a9e\u306ememset\u3084memcpy\u306f\u81ea\u524d\u3067for\u30eb\u30fc\u30d7\u306a\u3069\u3092\u3064\u304b\u3063\u3066\u540c\u3058\u3053\u3068\u3092\u3084\u308b\u3088\u308a\u3082\u9ad8\u901f\u3060\u3068\u8a00\u308f\u308c\u3066\u3044\u308b\u3002\u305d\u306e\u305f\u3081\u304b\uff0c\u4f1a\u793e\u3067\u3082\u3053\u308c\u3089\u306e\u95a2\u6570\u304c\u4f7f\u308f\u308c\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u898b\u308b\u6a5f\u4f1a\u306f\u591a\u3044\u3002\u305f\u3060\u3057\uff0c\u3051\u3063\u3053\u3046\u5fae\u5999\u306a\u611f\u3058\u3067\u3002\u4f8b\u3048\u3070\uff0c\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u3002 #define LENGTH_INT 4 void hoge() { int data[100]; memset((void *) data, 0, 100 * LENGTH_INT); /* \u306a\u3093\u304b\u30c6\u30ad\u30c8\u30fc\u306a\u51e6\u7406 */ } \u300c\u306a\u305csizeof\u3092\u4f7f\u308f\u306a\u3044\uff1f\u300d\uff0c\u300cvoid *\u306b\u30ad\u30e3\u30b9\u30c8\u3059\u308b\u5fc5\u8981\u3042\u308b\u304b\uff1f\u300d\u3068\u914d\u5c5e\u5f53\u521d\u306f\u601d\u3063\u3066\u3044\u305f\u306e\u3060\u304c\uff0c\u90f7\u306b\u5165\u3063\u3066\u306f\u90f7\u306b\u5f93\u3048\u3092\u5730\u3067\u3044\u304f\u2026","width":"100%","height":"190","html":""}