{"id":6735,"date":"2019-03-17T18:08:23","date_gmt":"2019-03-17T09:08:23","guid":{"rendered":"http:\/\/www.code-magagine.com\/?p=6735"},"modified":"2023-05-27T18:29:52","modified_gmt":"2023-05-27T09:29:52","slug":"%e3%80%90c%e8%a8%80%e8%aa%9e%e3%80%91%e3%80%8c%e3%83%9d%e3%82%a4%e3%83%b3%e3%82%bf%e6%bc%94%e7%ae%97%e3%80%8d%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6","status":"publish","type":"post","link":"http:\/\/www.code-magagine.com\/?p=6735","title":{"rendered":"\u3010C\u8a00\u8a9e\u3011\u30dd\u30a4\u30f3\u30bf\u306e\u57fa\u672c\u3084\u300c\u30dd\u30a4\u30f3\u30bf\u6f14\u7b97\u300d\u3001\u300c\u30cc\u30eb\u30dd\u30a4\u30f3\u30bf\u300d\u306b\u3064\u3044\u3066"},"content":{"rendered":"

C\u8a00\u8a9e\u3067\u306f\u3001\u5909\u6570\u306e\u5024\u306f\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u30e1\u30e2\u30ea\u306b\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u305d\u306e\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u30a2\u30c9\u30ec\u30b9\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u5909\u6570<\/strong><\/span>\u306e\u3053\u3068\u3092C\u8a00\u8a9e\u306e\u6587\u6cd5\u7684\u306b\u300c\u30dd\u30a4\u30f3\u30bf\u300d<\/strong><\/span>\u3068\u547c\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n

\u300c\u30dd\u30a4\u30f3\u30bf\u300d\u306e\u30e1\u30ea\u30c3\u30c8<\/h2>\n

\u30e1\u30e2\u30ea\u3092\u7bc0\u7d04\u3057\u3066\u3001\u9ad8\u901f\u52d5\u4f5c\u3059\u308b\u95a2\u6570\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u70b9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u6211\u3005\u304c\u4f7f\u3046PC\u306f\u9ad8\u6027\u80fd\u5316\u3057\u3066\u3044\u308b\u306e\u3067\u3042\u307e\u308a\u5fc5\u8981\u306a\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u5bb6\u96fb\u7b49\u306ePC\u4ee5\u5916\u306e\u6a5f\u5668\u306b\u642d\u8f09\u3055\u308c\u3066\u3044\u308bCPU\u3084\u30e1\u30e2\u30ea\u306f\u3001PC\u306b\u6bd4\u3079\u308b\u3068\u8ca7\u5f31<\/strong><\/span>\u306a\u3082\u306e\u3067\u3059\u3002\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u3001\u6570KB\u7a0b\u5ea6\u306e\u30e1\u30e2\u30ea\u9818\u57df\u3067\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u7d44\u307e\u306a\u3044\u3068\u3044\u3051\u306a\u304f\u306a\u3063\u305f\u308a\u3082\u3057\u307e\u3059\u3002<\/p>\n

\u4f8b<\/h3>\n

\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u308f\u306a\u3044\u5834\u5408<\/h4>\n

\u5f15\u6570\u306b\u300c100\u30d0\u30a4\u30c8\u306e\u9805\u76ee\u3092\u6301\u3064\u69cb\u9020\u4f53\u300d\u3092\u6e21\u3059\u3088\u3046\u306a\u95a2\u6570\u304c\u3042\u3063\u305f\u3068\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n

\u69cb\u9020\u4f53\u306b\u5024\u3092\u683c\u7d0d\u3057\u305f\u6642\u70b9\u3067\u3001100\u30d0\u30a4\u30c8\u306e\u30e1\u30e2\u30ea\u9818\u57df\u3092\u6d88\u8cbb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u305d\u3053\u3067\u3001\u95a2\u6570\u306e\u5f15\u6570\u306b\u305d\u306e100\u30d0\u30a4\u30c8\u306e\u5024\u3092\u6e21\u3059\u3068\u3001\u5024\u304c\u30b3\u30d4\u30fc\u3055\u308c\u308b\u306e\u3067\u3001\u5143\u306e\u9818\u57df\u3068\u5408\u308f\u305b\u3066200\u30d0\u30a4\u30c8\u6d88\u8cbb\u3057\u3066\u3057\u307e\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/strong><\/span><\/p>\n

\u3053\u308c\u3092\u95a2\u6570\u306b\u5bfe\u3059\u308b\u300c\u5024\u6e21\u3057\u300d<\/strong><\/span>\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n

\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u3063\u305f\u5834\u5408<\/h4>\n

\u9006\u306b\u3001\u305d\u306e\u69cb\u9020\u4f53\u306e\u30a2\u30c9\u30ec\u30b9\u3060\u3051\u3092\u95a2\u6570\u306b\u6e21\u3059\u3088\u3046\u306b\u3057\u305f\u5834\u5408\u306f\u3001100\u30d0\u30a4\u30c8\u3067\u306f\u306a\u304f\u3001\u6570\u30d0\u30a4\u30c8\u7a0b\u5ea6\u306e\u30a2\u30c9\u30ec\u30b9\u3060\u3051\u6e21\u3059\u3060\u3051\u3067\u6e08\u307f\u3001\u30e1\u30e2\u30ea\u306e\u6d88\u8cbb\u91cf\u3092\u5927\u5e45\u306b\u6291\u5236\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b<\/strong><\/span>\u306e\u3067\u3059\u3002<\/p>\n

\u3053\u308c\u3092\u95a2\u6570\u306b\u5bfe\u3059\u308b\u300c\u30dd\u30a4\u30f3\u30bf\u6e21\u3057\u300d<\/strong><\/span>\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n

\u30dd\u30a4\u30f3\u30bf\u3092\u5b66\u3070\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u7406\u7531<\/h2>\n

\u4e0a\u8a18\u30e1\u30ea\u30c3\u30c8\u3092\u5dee\u3057\u7f6e\u3044\u3066\u3082\u3001\u4e0b\u8a18\u7406\u7531\u304c\u3042\u308b\u305f\u3081C\u8a00\u8a9e\u3067\u306f\u30dd\u30a4\u30f3\u30bf\u3092\u62bc\u3055\u3048\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u6a19\u6e96\u95a2\u6570\u306b\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u3063\u305f\u69cb\u6587\u304c\u591a\u3044\u305f\u3081<\/h3>\n

printf\u3084rand\u7b49\u306e\u6a19\u6e96\u95a2\u6570\u306f\u3001\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u3046\u3053\u3068\u304c\u524d\u63d0\u306a\u306e\u3067\u77e5\u3063\u3066\u3044\u306a\u3044\u3068\u5341\u5206\u306b\u4f7f\u3048\u307e\u305b\u3093\u3002<\/p>\n

\u914d\u5217\u3092\u95a2\u6570\u306e\u5f15\u6570\u306e\u3059\u308b\u5834\u5408\u306f\u3001\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u6e21\u3059\u3053\u3068\u304c\u5fc5\u9808\u306b\u306a\u308b\u305f\u3081<\/h3>\n

C\u8a00\u8a9e\u3067\u306f\u3001\u914d\u5217\u3092\u95a2\u6570\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3057\u305f\u5834\u5408\u306f\u3001\u30dd\u30a4\u30f3\u30bf\u3092\u6e21\u3057\u305f\u3053\u3068\u3068\u540c\u7fa9\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n

\u4f8b\u3048\u3070\u4e0b\u8a18\u306e\u3088\u3046\u306a\u69cb\u6587\u304c\u3042\u3063\u305f\u5834\u5408\u306f\u3001<\/p>\n

void func(int a[2]){\r\n \u2026\r\n}<\/pre>\n
\u5b9f\u969b\u306f\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306b\u30dd\u30a4\u30f3\u30bf\u578b\u306e\u5909\u6570\u304c\u6e21\u3063\u305f\u3068\u3057\u3066\u8aad\u307f\u66ff\u3048\u3089\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n
void func(int* a){\r\n \u2026\r\n}<\/pre>\n
\u5148\u982d\u30a2\u30c9\u30ec\u30b9\u306e\u53d6\u5f97<\/h2>\n
\u901a\u5e38\u306e\u5909\u6570\u306e\u5834\u5408<\/h3>\n
&\u5909\u6570\u540d<\/pre>\n
\u914d\u5217\u306e\u5909\u6570\u306e\u5834\u5408<\/h3>\n
\u4e0b\u8a18\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u305f\u5834\u5408\u306f<\/p>\n
func(\u914d\u5217\u540d);<\/pre>\n
\u5b9f\u969b\u306f\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306b\u914d\u5217\u306e\u5148\u982d\u30a2\u30c9\u30ec\u30b9\u306e\u5024\u306b\u8aad\u307f\u66ff\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n
func(&\u914d\u5217\u540d[0]);<\/pre>\n
\u30a2\u30c9\u30ec\u30b9\u3092\u683c\u7d0d\u3059\u308b\u5909\u6570\u306e\u5ba3\u8a00<\/h2>\n
void*\u578b<\/h3>\n
\u3069\u3093\u306a\u30c7\u30fc\u30bf\u578b\u3067\u3082\u304a\u69cb\u3044\u306a\u3057\u306b\u6307\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u30dd\u30a4\u30f3\u30bf\u578b<\/strong><\/span>\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u3053\u3053\u3067\u4f7f\u3063\u3066\u3044\u308bvoid\u306f\u95a2\u6570\u306e\u5f15\u6570\u3001\u623b\u308a\u5024\u306b\u6271\u3046\u6587\u5b57\u5217\u3068\u306f\u4f55\u306e\u95a2\u4fc2\u3082\u306a\u3044\u306e\u3067\u6ce8\u610f<\/strong><\/span>\u3067\u3059\u3002<\/p>\n
void* \u5909\u6570\u540d;<\/pre>\n
\u3053\u306e\u610f\u5473\u306e\u3042\u308b\u30c7\u30fc\u30bf\u3067\u306f\u306a\u304f\u3001\u30e1\u30e2\u30ea\u4e0a\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u683c\u7d0d\u3059\u308b\u305f\u3081\u3060\u3051\u306e\u578b\u306e\u3053\u3068\u3092\u30dd\u30a4\u30f3\u30bf\u578b<\/strong><\/span>\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n
\u305f\u3060\u3001\u5b9f\u969b\u306f\u3053\u306e\u578b\u306f\u3042\u307e\u308a\u5b9f\u52d9\u3067\u4f7f\u308f\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
\u306a\u305c\u306a\u3089\u3001\u3053\u306e\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u5024\u3092\u53d6\u308a\u51fa\u3059\u969b\u306f\u3001\u5148\u982d\u304b\u3089\u4f55\u30d0\u30a4\u30c8\u53d6\u308a\u51fa\u3059\u3068\u3044\u3046\u3053\u3068\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044<\/strong><\/span>\u304b\u3089\u3067\u3059\u3002<\/p>\n
\u5b9f\u969b\u306f\u3001int*\u7b49\u306e\u65e2\u5b58\u306e\u578b\u306b\u300c*\u300d\u3092\u4ed8\u3051\u305f\u578b\u304c\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n
int*\u578b<\/h3>\n
int* \u5909\u6570\u540d;<\/pre>\n
void*\u578b\u3068\u307b\u307c\u540c\u3058\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u304c\u3001void*\u578b\u3068\u9055\u3063\u3066\u3001int\u578b\uff084\u30d0\u30a4\u30c8\u9818\u57df\uff09\u306e\u5909\u6570\u306a\u306e\u3067\u3001\u5148\u982d\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a\u3059\u308b\u3060\u3051\u3067\u3001\u81ea\u52d5\u7684\u306b4\u30d0\u30a4\u30c8\u5206\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a\u3057\u3066\u3001\u5024\u3092\u53d6\u308a\u51fa\u3057\u3066\u304f\u308c\u308b<\/strong><\/span>\u306e\u3067\u3059\u3002<\/p>\n
\u30dd\u30a4\u30f3\u30bf\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u5024\u306e\u53d6\u308a\u51fa\u3057<\/h2>\n
\u901a\u5e38\u306e\u5909\u6570\u306e\u5834\u5408<\/h3>\n
*\u30dd\u30a4\u30f3\u30bf\u5909\u6570\u540d<\/pre>\n
\u914d\u5217\u306e\u53c2\u7167\u306e\u5834\u5408<\/h3>\n
\u300cstr[0]\u300d\u3068\u300c*str\u300d\u53ca\u3073\u3001\u300cstr[\u6574\u6570]\u300d\u3068\u300c*(str+\u6574\u6570)\u300d\u306f\u540c\u3058\u610f\u5473\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u69cb\u9020\u4f53\u30dd\u30a4\u30f3\u30bf\u3092\u53c2\u7167\u3059\u308b\u65b9\u6cd5<\/h2>\n
\u901a\u5e38\u306e\u53c2\u7167\u3068\u306f\u9055\u3044\u3001\u69cb\u9020\u4f53\u3092\u30dd\u30a4\u30f3\u30bf\u3068\u3057\u3066\u53c2\u7167\u3059\u308b\u5834\u5408\u306f\u300c\u304b\u3063\u3053\uff08\uff09\u300d\u3067\u62ec\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
(*\u69cb\u9020\u4f53\u306e\u5909\u6570\u540d).\u30e1\u30f3\u30d0\u540d;<\/pre>\n
\u307e\u305f\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306b\u7701\u7565\u8868\u8a18\u3092\u4f7f\u3046\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
\u69cb\u9020\u4f53\u5909\u6570\u540d -> \u30e1\u30f3\u30d0\u540d;<\/pre>\n
\u3053\u308c\u3092\u300c\u30a2\u30ed\u30fc\u6f14\u7b97\u5b50\u300d<\/strong><\/span>\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n
\u30dd\u30a4\u30f3\u30bf\u306e\u6574\u7406<\/h2>\n
C\u8a00\u8a9e\u306e\u30dd\u30a4\u30f3\u30bf\u306f\u4e00\u53e3\u306b\u300c\u30dd\u30a4\u30f3\u30bf\u300d<\/strong><\/span>\u3068\u3044\u3063\u3066\u3082\u4e0b\u8a18\u306e\u56db\u3064\u306b\u5206\u304b\u308c\u307e\u3059\u3002<\/p>\n
\u6df7\u540c\u3057\u3084\u3059\u3044\u306e\u3067\u6ce8\u610f\u3092\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
    \n
  • \u30dd\u30a4\u30f3\u30bf\u578b<\/li>\n
  • \u30dd\u30a4\u30f3\u30bf\u578b\u306e\u5909\u6570<\/li>\n
  • \u30dd\u30a4\u30f3\u30bf\u578b\u306e\u5024<\/li>\n
  • \u30dd\u30a4\u30f3\u30bf\u578b\u306e\u5024\u306e\u6307\u3059\u5148\u306e\u5024<\/li>\n<\/ul>\n
    \u767e\u805e\u306f\u4e00\u898b\u306b\u3057\u304b\u305a\u3067\u3059\u3002\u4e0b\u8a18\u306e\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f8b\u306b\u8aac\u660e\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n
    int main()\r\n{\r\n\r\n\t\/\/\u901a\u5e38\u306eint\u578b\u306e\u5909\u6570\r\n\tint no_pointa = 5;\r\n\t\/\/int\u3078\u306e\u300c\u30dd\u30a4\u30f3\u30bf\u578b\u306e\u5909\u6570\u300d(int\u578b\u5909\u6570\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u4ee3\u5165)\r\n\tint *pointa = &no_pointa;\r\n\r\n\t\/\/\u300c\u30dd\u30a4\u30f3\u30bf\u578b\u306e\u5024\u300d\u3092\u8868\u793a\uff08\u30a2\u30c9\u30ec\u30b9\uff09\r\n\tprintf(\"%p\\n\", (void*)&pointa);\r\n\r\n}<\/pre>\n
    \u30dd\u30a4\u30f3\u30bf\u578b<\/h3>\n
    \u4ed6\u306e\u578b\u304b\u3089\u6d3e\u751f\u3059\u308b\u5f62\u3067\u751f\u6210\u3055\u308c\u307e\u3059\u3002\u300cint\u3078\u306e\u30dd\u30a4\u30f3\u30bf\u578b\u300d\u3084\u3001\u300cdouble\u3078\u306e\u30dd\u30a4\u30f3\u30bf\u578b\u300d\u7b49\u3002<\/p>\n
    \u4e0a\u8a18\u30b5\u30f3\u30d7\u30eb\u3067\u3044\u3048\u3070\u3001\u300cint *pointa\u300d\u306e\u5909\u6570\u5ba3\u8a00\u306e\u300cint *\u300d<\/strong><\/span>\u306e\u90e8\u5206\u306e\u3053\u3068\u3092\u6307\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
    \u30dd\u30a4\u30f3\u30bf\u578b\u306e\u5909\u6570<\/h3>\n
    \u30dd\u30a4\u30f3\u30bf\u578b\u3067\u5b9f\u969b\u306b\u5b9a\u7fa9\u3057\u305f\u5909\u6570\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n
    \u4e0a\u8a18\u30b5\u30f3\u30d7\u30eb\u3067\u3044\u3048\u3070\u3001\u300cint *pointa\u300d\u306e\u5909\u6570\u5ba3\u8a00\u306e\u300cpointa\u300d\uff08\u300c*\u300d\u306f\u3042\u304f\u307e\u3067\u578b\u306b\u542b\u307f\u307e\u3059\u3002\uff09<\/strong><\/span>\u306e\u90e8\u5206\u306e\u3053\u3068\u3092\u6307\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
    \u30dd\u30a4\u30f3\u30bf\u578b\u306e\u5024<\/h3>\n
    \u5b9f\u969b\u306b\u306f\u30e1\u30e2\u30ea\u306e\u30a2\u30c9\u30ec\u30b9\u306e\u3053\u3068\u3002\u5909\u6570\u306e\u5148\u982d\u306b\u30a2\u30c9\u30ec\u30b9\u6f14\u7b97\u5b50\uff08&\uff09<\/strong>\u3092\u4ed8\u3051\u308b\u3053\u3068\u3067\u53d6\u308a\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/span><\/span><\/p>\n
    \u4e0a\u8a18\u30b5\u30f3\u30d7\u30eb\u3067\u3044\u3048\u3070\u4e0b\u8a18\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3067\u51fa\u529b\u3055\u308c\u308b\u7d50\u679c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
    \t\/\/\u300c\u30dd\u30a4\u30f3\u30bf\u578b\u306e\u5024\u300d\u3092\u8868\u793a\uff08\u30a2\u30c9\u30ec\u30b9\uff09\r\n\tprintf(\"%p\\n\", (void*)&pointa);<\/pre>\n
    \u30dd\u30a4\u30f3\u30bf\u578b\u306e\u5024\u304c\u6307\u3059\u5148\u306e\u5024<\/h3>\n
    \u300c*\u30dd\u30a4\u30f3\u30bf\u578b\u306e\u5909\u6570\u300d\u3068\u9593\u63a5\u6f14\u7b97\u5b50\uff08*\uff09<\/strong><\/span>\u3092\u30dd\u30a4\u30f3\u30bf\u578b\u306e\u5909\u6570\u306e\u5148\u982d\u306b\u4ed8\u3051\u308c\u3070\u3001\u30a2\u30c9\u30ec\u30b9\u306e\u5148\u306e\u5024\u307e\u3067\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
    \u8868\u8a18\u6cd5\u306e\u9055\u3044<\/h2>\n
    C\u8a00\u8a9e\u3067\u306f\u3001\u30dd\u30a4\u30f3\u30bf\u306e\u8868\u8a18\u65b9\u6cd5\u3068\u3057\u3066\u306f\u4e0b\u8a18\u306e\u4e8c\u3064\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
    int *pointa;\r\nint* pointa;<\/pre>\n
    \u7d50\u8ad6\u3068\u3057\u3066\u306f\u3001\u4e0a\u8a18\u30b5\u30f3\u30d7\u30eb\u3067\u3042\u308c\u3070\u3069\u3061\u3089\u3082\u540c\u3058\u3088\u3046\u306b\u52d5\u304d\u307e\u3059\u3002<\/strong><\/span><\/p>\n
    \u305f\u3060\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306b\u3057\u305f\u5834\u5408\u306f\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n
    int* pointa1,pointa2;\r\nint *pointa1,pointa2;<\/pre>\n
    \u3053\u306e\u5834\u5408\u306f\u524d\u8005\u3067\u3042\u308c\u3070\u3001\u300cpointa1\u300d\u3082\u300cpointa2\u300d\u3082\u3069\u3061\u3089\u3082int\u578b\u306e\u30dd\u30a4\u30f3\u30bf\u3092\u6307\u3059\u5909\u6570\u3068\u3057\u3066\u6b63\u5e38\u306b\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/strong><\/span><\/p>\n
    \u3057\u304b\u3057\u3001\u5f8c\u8005\u306e\u5834\u5408\u306f\u3001pointa1\u306fint\u578b\u306e\u30dd\u30a4\u30f3\u30bf\u3092\u6307\u3057\u307e\u3059\u304c\u3001pointa2\u306f\u901a\u5e38\u306eint\u578b\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/strong><\/span><\/p>\n
    \u5909\u6570\u540d\u306b\u9593\u63a5\u6f14\u7b97\u5b50(*)\u3092\u5bc4\u305b\u308b\u304b\u3001\u578b\u306e\u65b9\u306b\u5bc4\u305b\u308b\u304b\u306f\u8af8\u8aac\u3042\u308b\u3088\u3046\u3067\u3059\u304c\u3001\u500b\u4eba\u7684\u306b\u306f\u8907\u6570\u5909\u6570\u3092\u5b9a\u7fa9\u3057\u305f\u969b\u306b\u8aa4\u3063\u305f\u6319\u52d5\u3092\u3057\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u578b\u306b\u9593\u63a5\u6f14\u7b97\u5b50(*)\u3092\u5bc4\u305b\u308b\u65b9\u6cd5<\/strong><\/span>\u306b\u3057\u305f\u65b9\u304c\u3088\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
    \u30dd\u30a4\u30f3\u30bf\u6f14\u7b97\u3068\u306f\uff1f<\/h2>\n
    \u30dd\u30a4\u30f3\u30bf\u306b\u6574\u6570\u3092\u8db3\u3057\u305f\u308a\u5f15\u3044\u305f\u308a\u3057\u3066\u3001\u30dd\u30a4\u30f3\u30bf\u540c\u58eb\u3067\u8a08\u7b97\u3092\u3059\u308b\u6a5f\u80fd<\/strong><\/span>\u3067\u3059\u3002<\/p>\n
    int main()\r\n{\r\n\tint a;\r\n\tint *b;\r\n\r\n\tb = &a;\r\n\tprintf(\"%p\\n\", (void*)b);\r\n\t\/\/\u30dd\u30a4\u30f3\u30bf\u306b\u30a2\u30c9\u30ec\u30b9\u3092\u52a0\u7b97\u3059\u308b\u3002\r\n\tb++;\r\n\tprintf(\"%p\\n\", (void*)b);\r\n}<\/pre>\n
    \u4e0a\u8a18\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u7d50\u679c\u3068\u3057\u3066\u306f\u79c1\u306e\u74b0\u5883\u3067\u306f\u4e0b\u8a18\u306e\u3088\u3046\u306b\u8868\u793a\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n
    0055F80C\r\n0055F810<\/pre>\n
    4<\/strong><\/span>\u3060\u3051\u30e1\u30e2\u30ea\u9818\u57df\u304c\u5897\u3048\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n
    \u3053\u308c\u306f\u6307\u5b9a\u3055\u308c\u305f\u578b\u306e\u30b5\u30a4\u30ba\u5206\u3060\u3051\u30e1\u30e2\u30ea\u304c\u9032\u3093\u3067\u3044\u308b<\/strong><\/span>\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u3059\u3002\uff08\u4e0a\u8a18\u4f8b\u306e\u5834\u5408\u3067\u3044\u3048\u3070\u3001int\u3078\u306e\u30dd\u30a4\u30f3\u30bf\u306a\u306e\u30674\u30d0\u30a4\u30c8\u30e1\u30e2\u30ea\u304c\u9032\u3093\u3067\u3044\u307e\u3059\u3002\uff09<\/p>\n
    \u30cc\u30eb\u30dd\u30a4\u30f3\u30bf\u3068\u306f\uff1f<\/h2>\n
    \u4f55\u3082\u6307\u3057\u3066\u3044\u306a\u3044\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u308b\u30dd\u30a4\u30f3\u30bf\u306e\u3053\u3068<\/strong><\/span>\u3067\u3059\u3002<\/p>\n
    \u30cc\u30eb\u30dd\u30a4\u30f3\u30bf\u3092\u6307\u3059\u30de\u30af\u30ed\u5b9a\u6570\u3068\u3057\u3066\u306f\u300cNULL\u300d<\/strong><\/span>\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n
    \u7528\u9014<\/h2>\n
    \u30dd\u30a4\u30f3\u30bf\u5909\u6570\u306e\u521d\u671f\u5024<\/h3>\n
    \u30dd\u30a4\u30f3\u30bf\u5909\u6570\u306e\u521d\u671f\u5024\u306bNULL\u3092\u5165\u308c\u3066\u304a\u304f\u3053\u3068\u3067\u3001\u30cc\u30eb\u30dd\u30a4\u30f3\u30bf\u3092\u7d4c\u7531\u3057\u3066\u5024\u3092\u53c2\u7167\u3059\u308b\u3088\u3046\u306a\u3053\u3068\u304c\u3042\u308c\u3070\u3001OS\u304c\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5373\u505c\u6b62\u3057\u3066\u304f\u308c\u308b<\/strong><\/span>\u306e\u3067\u3001\u30d0\u30b0\u306b\u3059\u3050\u306b\u6c17\u3065\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
    C\u8a00\u8a9e\u3060\u3051\u3067\u306a\u304f\u3001Java\u3068\u304b\u3082\u53c2\u7167\u578b\u306b\u306fNULL\u3067\u521d\u671f\u5316\u3057\u305f\u308a\u3057\u307e\u3059\u304c\u3001\u305d\u306e\u76ee\u7684\u3068\u3057\u3066\u306f\u3053\u308c\u3068\u4f3c\u305f\u3088\u3046\u306a\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
    \u95a2\u6570\u306e\u7570\u5e38\u6642\u306e\u623b\u308a\u5024<\/h3>\n
    \u6709\u52b9\u306a\u3069\u3093\u306a\u30dd\u30a4\u30f3\u30bf\u3068\u6bd4\u8f03\u3057\u3066\u3082\u7b49\u3057\u304f\u306a\u3089\u306a\u3044<\/strong><\/span>\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u30dd\u30a4\u30f3\u30bf\u3092\u623b\u308a\u5024\u3068\u3057\u3066\u8fd4\u3059\u95a2\u6570\u306e\u7570\u5e38\u6642\u306e\u623b\u308a\u5024<\/strong><\/span>\u3068\u3057\u3066\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n
    \u30ea\u30b9\u30c8\u69cb\u9020\u306e\u672b\u5c3e\u306e\u30c7\u30fc\u30bf<\/h3>\n
    \u30ea\u30b9\u30c8\u69cb\u9020\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf\u306e\u672b\u5c3e\u306e\u30c7\u30fc\u30bf\u3068\u3057\u3066\u3082\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"C\u8a00\u8a9e\u3067\u306f\u3001\u5909\u6570\u306e\u5024\u306f\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u30e1\u30e2\u30ea\u306b\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002 \u305d\u306e\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u30a2\u30c9\u30ec\u30b9\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u5909\u6570\u306e\u3053\u3068\u3092C\u8a00\u8a9e\u306e\u6587\u6cd5\u7684\u306b\u300c\u30dd\u30a4\u30f3\u30bf\u300d\u3068\u547c\u3093\u3067\u3044\u307e\u3059\u3002 \u300c\u30dd\u30a4\u30f3\u30bf\u300d\u306e\u30e1\u30ea\u30c3\u30c8 \u30e1\u30e2\u30ea\u3092\u7bc0\u7d04\u3057\u3066\u3001\u9ad8\u901f\u52d5\u4f5c\u3059\u308b\u95a2\u6570\u3092 […]","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[74],"tags":[],"_links":{"self":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/6735"}],"collection":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6735"}],"version-history":[{"count":8,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/6735\/revisions"}],"predecessor-version":[{"id":20146,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/6735\/revisions\/20146"}],"wp:attachment":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6735"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6735"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6735"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}