{"id":77634,"date":"2026-02-25T03:05:51","date_gmt":"2026-02-24T19:05:51","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/77634.html"},"modified":"2026-02-25T03:05:51","modified_gmt":"2026-02-24T19:05:51","slug":"c%e8%af%ad%e8%a8%80%e5%ad%a6%e4%b9%a020260119","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/77634.html","title":{"rendered":"C\u8bed\u8a00\u5b66\u4e6020260119"},"content":{"rendered":"

int\u00a0 a\u00a0 =\u00a0 100;<\/p>\n

int\u662f\u7c7b\u578b\u00a0 a\u662f\u53d8\u91cf\u00a0 100\u662f\u6570\u636e.<\/p>\n

\"\"<\/p>\n

\u6570\u636e\u7c7b\u578b\u5927\u5c0f\u548c<\/span>sizeof\u5173\u952e\u5b57<\/h2>\n

\"\"<\/p>\n

sizeof(a);\u00a0\u00a0\/\/\u6c42a\u7684\u5927\u5c0f.<\/span> \u4f8b:<\/p>\n

\"\"<\/p>\n

\u53d8\u91cf\u4e0e\u5e38\u91cf<\/h2>\n

\u53d8\u91cf\u5206\u7c7b<\/h3>\n

\u5168\u5c40\u53d8\u91cf<\/h4>\n

\u751f\u547d\u5468\u671f：\u7a0b\u5e8f\u5f00\u59cb\u8fd0\u884c\u521b\u5efa，\u7a0b\u5e8f\u8fd0\u884c\u7ed3\u675f\u9500\u6bc1\u3002<\/p>\n

\u4f5c\u7528\u57df：\u6574\u4e2a\u5de5\u7a0b\u5f53\u4e2d\u3002<\/p>\n

\u5c40\u90e8\u53d8\u91cf<\/h4>\n

\u751f\u547d\u5468\u671f：\u51fd\u6570\u8fd0\u884c\u65f6\u521b\u5efa，\u51fd\u6570\u7ed3\u675f\u8fd0\u884c\u9500\u6bc1\u3002<\/p>\n

\u4f5c\u7528\u57df：\u662f\u5728\u51fd\u6570\u5185\u90e8\/\u82b1\u62ec\u53f7\u5185\u90e8<\/p>\n

\u6ce8\u610f：\u5f53\u5c40\u90e8\u53d8\u91cf\u548c\u5168\u5c40\u53d8\u91cf\u540c\u540d\u7684\u65f6\u5019<\/span>
\n , \u5c40\u90e8\u53d8\u91cf\u4f18\u5148\u4f7f\u7528\u3002<\/span><\/p>\n

\u5168\u5c40\u53d8\u91cf\u548c\u5c40\u90e8\u53d8\u91cf\u5728\u5185\u5b58\u4e2d\u5b58\u50a8\u5728\u54ea\u91cc\u5462<\/span>?<\/span><\/h4>\n

\u7b80\u5316\u533a\u57df\u5212\u5206<\/p>\n

\u6808\u533a<\/span>
\n (Stack)<\/span>
\n : <\/span>
\n \u5c40\u90e8\u53d8\u91cf\u3001\u51fd\u6570\u53c2\u6570\u7b49\u5b58\u653e\u5728\u8fd9\u91cc\u3002\u7531\u7f16\u8bd1\u5668\u81ea\u52a8\u5206\u914d\u548c\u91ca\u653e\u3002 <\/span><\/p>\n

\u9759\u6001\u533a<\/span>
\n (Static Area)<\/span>
\n : <\/span>
\n \u5168\u5c40\u53d8\u91cf\u548c\u9759\u6001\u53d8\u91cf\u5b58\u653e\u5728\u8fd9\u91cc\u3002\u7a0b\u5e8f\u7ed3\u675f\u540e\u7531\u7cfb\u7edf\u91ca\u653e\u3002 <\/span><\/p>\n

\u5806\u533a<\/span>
\n (Heap)<\/span>
\n : <\/span>
\n \u7528\u4e8e\u52a8\u6001\u5185\u5b58\u7ba1\u7406<\/span>
\n (<\/span>
\n \u540e\u671f\u4f1a\u4ecb\u7ecd<\/span>
\n , <\/span>
\n \u5982<\/span>
\n malloc, calloc)<\/span>
\n \u3002\u7531\u7a0b\u5e8f\u5458\u624b\u52a8\u5206\u914d\u548c\u91ca\u653e\u3002<\/span><\/p>\n

\"\"<\/p>\n

\u5e38\u91cf<\/h4>\n

\u5e38\u91cf\u662f\u5728\u7a0b\u5e8f\u8fd0\u884c\u7684\u8fc7\u7a0b\u5f53\u4e2d<\/span>
\n , <\/span>
\n \u4e0d\u80fd\u4fee\u6539\u7684\u3002<\/span><\/p>\n

<\/h2>\n

\u7c7b\u578b\u8f6c\u6362<\/h2>\n

–>\u7c7b\u578b\u4e0d\u4e00\u81f4<\/p>\n

\u5728C\u8bed\u8a00\u4e2d\u6bcf\u4e2a\u53d8\u91cf\u548c\u8868\u8fbe\u5f0f\u90fd\u6709\u660e\u786e\u7684\u6570\u636e\u7c7b\u578b(\u5982int,float,double,char,\u6307\u9488\u7b49)\u3002<\/p>\n

\u5728\u8d4b\u503c\u7684\u65f6\u5019，\u6211\u4eec\u5e94\u8be5\u505a\u5230\u7b49\u53f7\u4e24\u8fb9\u7c7b\u578b\u662f\u4e00\u81f4\u7684，\u5982\u679c\u4e0d\u4e00\u81f4\u5c31\u4f1a\u51fa\u73b0\u8b66\u544a\u7684\u95ee\u9898\u3002\u8981\u5b9e\u73b0\u4e00\u81f4\u7684\u7c7b\u578b，\u6211\u4eec\u53ea\u80fd\u901a\u8fc7\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n

\u4f8b：<\/p>\n

\"\"<\/p>\n

\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\u9700\u8981\u6ce8\u610f\u7684\u95ee\u9898: 1.\u7a0b\u5e8f\u5458\u8981\u5bf9\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\u8d1f\u8d23\u3002 2.\u53ef\u80fd\u4f1a\u51fa\u73b0\u6570\u636e\u4e22\u5931\u95ee\u9898(\u5982\u6d6e\u70b9\u6570\u8f6c\u6574\u6570\u4f1a\u4e22\u5931\u5c0f\u6570\u90e8\u5206)\u3002<\/p>\n

<\/h2>\n

printf\u548cscanf\u51fd\u6570<\/h2>\n

printf\u51fd\u6570<\/h3>\n

printf（）\u7684\u4f5c\u7528\u662f\u5c06\u53c2\u6570\u6587\u672c\u8f93\u5165\u5230\u5c4f\u5e55\u3002<\/p>\n

printf（）\u4e0d\u4f1a\u5728\u884c\u5c3e\u81ea\u52a8\u6dfb\u52a0\u6362\u884c\u7b26，\u8fd0\u884c\u7ed3\u675f\u540e，\u5149\u6807\u5c31\u505c\u7559\u5728\u8f93\u51fa\u7ed3\u675f\u7684\u5730\u65b9，\u4e0d\u4f1a\u81ea\u52a8\u6362\u884c\u3002\u4e3a\u4e86\u8ba9\u5149\u6807\u79fb\u5230\u4e0b\u4e00\u884c\u7684\u5f00\u5934，\u53ef\u4ee5\u5728\u8f93\u51fa\u6587\u672c\u7684\u7ed3\u5c3e，\u6dfb\u52a0\u4e00\u4e2a\u6362\u884c\u7b26\\\\n\u3002<\/p>\n

printf()\u662f\u5728\u6807\u51c6\u5e93\u7684\u5934\u6587\u4ef6stdio.h\u5b9a\u4e49\u7684\u3002\u4f7f\u7528\u8fd9\u4e2a\u51fd\u6570\u4e4b\u524d，\u5fc5\u987b\u5728\u6e90\u7801\u6587\u4ef6\u5934\u90e8\u5f15\u5165\u8fd9\u4e2a\u5934\u6587\u4ef6\u3002<\/p>\n

\u5360\u4f4d\u7b26<\/h3>\n

\u6240\u8c13"\u5360\u4f4d\u7b26"，\u5c31\u662f\u8fd9\u4e2a\u4f4d\u7f6e\u53ef\u4ee5\u7528\u5176\u4ed6\u503c\u4ee3\u5165\u3002 \u5e38\u7528printf\u683c\u5f0f\u7684\u5360\u4f4d\u7b26： %c:\u5b57\u7b26\u3002\/\/char %d：\u5341\u8fdb\u5236\u6574\u6570（\u6709\u7b26\u53f7\u768410\u8fdb\u5236\u6574\u6570）\u3002\/\/int %f：\u5c0f\u6570（\u5305\u542bfloat\u7c7b\u578b\u548cdouble\u7c7b\u578b）\u3002\/\/float%f double – %lf %ld：\u5341\u8fdb\u5236long int \u7c7b\u578b\u3002 %lld：\u5341\u8fdb\u5236long long int\u7c7b\u578b\u3002 %Lf：long double \u7c7b\u578b\u6d6e\u70b9\u6570\u3002 %o:\u516b\u8fdb\u5236\u6574\u6570\u3002 %p：\u6307\u9488（\u7528\u6765\u6253\u5370\u5730\u5740）\u3002 %s：\u5b57\u7b26\u4e32\u3002 %u:\u65e0\u7b26\u53f7\u6574\u6570（unsingned int）\u3002 %x：\u5341\u516d\u8fdb\u5236\u6574\u6570\u3002 %zu：size_t \u7c7b\u578b\u3002<\/p>\n

\"\"<\/p>\n

\u9650\u5b9a\u5bbd\u5ea6<\/h3>\n

printf（）\u5141\u8bb8\u9650\u5b9a\u7684\u6700\u5c0f\u5bbd\u5ea6\u3002<\/p>\n

\u4f8b：<\/p>\n

\"\"<\/p>\n

\u4e0a\u5217\u793a\u4f8b\u4e2d，%5d\u4ee3\u8868\u8fd9\u4e2a\u5360\u4f4d\u7b26\u7684\u5bbd\u5ea6\u81f3\u5c11\u4e3a5\u4f4d\u3002\/\/\u5bbd\u5ea6\u8d85\u8fc75\u90a3\u4e48\u6709\u591a\u5c11\u4f4d\u5c31\u6253\u5370\u591a\u5c11\u4f4d<\/span> \u5982\u679c\u4e0d\u6ee15\u4f4d，\u5bf9\u5e94\u7684\u503c\u7684\u524d\u9762\u4f1a\u6dfb\u52a0\u7a7a\u683c\u3002 \u8f93\u51fa\u7684\u503c\u9ed8\u8ba4\u662f\u53f3\u5bf9\u9f50\u3002 \u5982\u679c\u60f3\u8981\u5de6\u5bf9\u9f50\u5728\u5360\u4f4d\u7b26\u7684%\u7684\u540e\u9762\u63d2\u5165\u4e00\u4e2a\u51cf\u53f7\u3002<\/p>\n

\u9650\u5b9a\u5c0f\u6570\u4f4d\u6570<\/h3>\n

\u8f93\u51fa\u5c0f\u6570\u65f6，\u6709\u65f6\u5e0c\u671b\u9650\u5b9a\u5c0f\u6570\u7684\u4f4d\u6570\u3002\u4e3e\u4f8b\u6765\u8bf4，\u5e0c\u671b\u5c0f\u6570\u70b9\u540e\u9762\u53ea\u4fdd\u7559\u4e24\u4f4d，\u5360\u4f4d\u7b26\u53ef\u4ee5\u5199\u6210%.2f\u3002<\/p>\n

\u4f8b： printf（"Number is %6.2f\\\\n",0.5）;\/\/\u9075\u5faa\u56db\u820d\u4e94\u5165 \/\/\u6570\u636e\u5bbd\u5ea6\u4f4d6，\u4fdd\u7559\u5c0f\u6570\u70b9\u540e2\u4f4d\u3002\u6b64\u65f6\u5bbd\u5ea6\u5305\u542b\u5c0f\u6570\u70b9\u7684\u4f4d\u6570\u3002<\/span><\/p>\n

scanf\u51fd\u6570<\/h3>\n

scanf\u4e3b\u8981\u7528\u4e8e\u4ece\u952e\u76d8\u83b7\u53d6\u6570\u636e\u5230\u7a0b\u5e8f\u5f53\u4e2d\u7684\u53d8\u91cf\u5f53\u4e2d\u3002\/\/\u4f1a\u81ea\u52a8\u7565\u8fc7\u7a7a\u683c，\u6362\u884c\u7b26（\u975e\u5b57\u7b26）<\/p>\n

scanf()<\/span>
\n \u5e38\u7528\u7684\u5360\u4f4d\u7b26，\u4e0e<\/span>
\n printf()\u7684\u5360\u4f4d\u7b26\u57fa\u672c\u4e00\u81f4\u3002<\/span><\/p>\n

scanf()\u5fc5\u987b\u4e25\u683c\u6309\u7167\u683c\u5f0f\u5316\u5f62\u5f0f\u8fdb\u884c\u8f93\u5165<\/span><\/p>\n

\"\"<\/p>\n

\u4e0a\u9762\u793a\u4f8b\u4e2d，<\/span>
\n scanf()<\/span>
\n \u7684\u7b2c\u4e00\u4e2a\u53c2\u6570<\/span>
\n %d<\/span>
\n ，\u8868\u793a\u7528\u6237\u8f93\u5165\u7684\u5e94\u8be5\u662f\u4e00\u4e2a\u6574\u6570\u3002<\/span>
\n %d<\/span>
\n \u5c31\u662f\u4e00\u4e2a\u5360\u4f4d\u7b26，<\/span>
\n %<\/span>
\n \u662f\u5360\u4f4d\u7b26\u7684 \u6807\u5fd7，d<\/span>
\n \u8868\u793a\u6574\u6570\u3002\u7b2c\u4e8c\u4e2a\u53c2\u6570<\/span>
\n &score<\/span>
\n \u8868\u793a，\u5c06\u7528\u6237\u4ece\u952e\u76d8\u8f93\u5165\u7684\u6574\u6570\u5b58\u5165\u53d8\u91cf<\/span>
\n score<\/span>
\n \u3002 <\/span><\/p>\n

score<\/span>
\n \u524d\u9762\u7684<\/span>
\n &<\/span>
\n \u4e00\u5b9a\u4e0d\u80fd\u7701\u7565\u6389！！！<\/span><\/p>\n

\u4e00\u6b21\u5c06\u952e\u76d8\u8f93\u5165\u8bfb\u5165\u591a\u4e2a\u53d8\u91cf<\/span><\/h4>\n

\u4f8b：<\/span><\/p>\n

\"\"<\/p>\n<\/p>\n<\/p>\n

\u4e0a\u9762\u793a\u4f8b\u4e2d，\u683c\u5f0f\u5b57\u7b26\u4e32<\/span>%d%d%f%f<\/span>，\u8868\u793a\u7528\u6237\u8f93\u5165\u7684\u524d\u4e24\u4e2a\u662f\u6574\u6570，\u540e\u4e24\u4e2a\u662f\u6d6e\u70b9\u6570，\u6bd4\u5982\u00a0 \u00a0 \u00a0\u00a0<\/span>1 -20\u00a0 3.4\u00a0 -4.0e3\u3002\u8fd9\u56db\u4e2a\u503c\u4f9d\u6b21\u653e\u5165<\/span>i<\/span>\u3001<\/span>j<\/span>\u3001<\/span>x<\/span>\u3001<\/span>y<\/span>\u56db\u4e2a\u53d8\u91cf\u3002<\/span><\/p>\n

\u8fd94<\/span>
\n \u4e2a\u53d8\u91cf\u53ef\u4ee5\u653e\u5728\u4e00\u884c \u4f7f\u7528\u7a7a\u683c\u9694\u5f00<\/span><\/p>\n

\u4e5f\u53ef\u4ee5\u5199\u6210<\/span>
\n 4<\/span>
\n \u884c <\/span><\/p>\n

scanf<\/span>
\n \u4f1a\u81ea\u52a8\u8fc7\u4e86\u7a7a\u683c\u3001\u6362\u884c\u7b26\u3002<\/span><\/p>\n

scanf \u7684\u8fd4\u56de\u503c<\/span><\/h4>\n

\u00a0
\n scanf()\u7684\u8fd4\u56de\u503c\u662f\u4e00\u4e2a\u6574\u6570，\u8868\u793a\u6210\u529f\u8bfb\u53d6\u7684\u53d8\u91cf\u4e2a\u6570\u3002 <\/span>\u00a0<\/p>\n

\u5982\u679c\u6ca1\u6709\u8bfb\u53d6\u4efb\u4f55\u9879，\u6216\u8005\u5339\u914d\u5931\u8d25，\u5219\u8fd4\u56de0\u3002 <\/span><\/p>\n

\u5982\u679c\u5728\u6210\u529f\u8bfb\u53d6\u4efb\u4f55\u6570\u636e\u4e4b\u524d，\u53d1\u751f\u4e86\u8bfb\u53d6\u9519\u8bef\u6216\u8005\u9047\u5230\u8bfb\u53d6\u5230\u6587\u4ef6\u7ed3\u5c3e，\u5219\u8fd4\u56de\u5e38\u91cf EOF(-1)\u3002 <\/span><\/p>\n

EOF – end of file \u6587\u4ef6\u7ed3\u675f\u6807\u5fd7\u3002<\/span>\u00a0\u00a0<\/p>\n

\/\/\u4e09\u6b21CTRL+z \u9000\u51fa\u7a0b\u5e8f\u5faa\u73af\u3002<\/span><\/p>\n

\u4f7f\u7528Visual Studio 2026\u7684\u5c0f\u77e5\u8bc6<\/h2>\n

#define _CRT_SECURE_NO_WARNINGS<\/span><\/p>\n

\u5982\u4f55\u628a\u8fd9\u884c\u4ee3\u7801\u52a0\u5165vs2026<\/p>\n

\u9996\u5148\u628a\u8fd9\u6bb5\u4ee3\u7801\u590d\u5236\u4e0b\u6765\u5c3d\u91cf\u4e0d\u8981\u624b\u6253<\/p>\n

\u7136\u540e\u4e0b\u8f7d\u8f6f\u4ef6Everything-1.4.1.1022.x64-Setup（\u8fd9\u4e2a\u662f\u6211\u7684\u7248\u672c\u53ef\u4ee5\u4e0d\u4e00\u6837\u4e0d\u5f71\u54cd）<\/p>\n

\u4e0b\u8f7d – voidtools（\u4e0b\u8f7d\u7f51\u7ad9）<\/p>\n

\u4e0b\u8f7d\u597d\u540e\u5728\u8f6f\u4ef6\u641c\u7d22\u00a0newc++file\u590d\u5236\u8def\u5f84\u5728\u8bb0\u4e8b\u672c\u6253\u5f00（\u8981\u663e\u793a\u5168\u90e8\u6587\u4ef6）\u4e2d\u6253\u5f00\u7c98\u8d34\u540e\u4fdd\u5b58\u5c31\u53ef\u4ee5\u4e86\u3002（\u6ce8：\u5148\u628a\u8bb0\u4e8b\u672c\u4ee5\u7ba1\u7406\u5458\u8eab\u4efd\u8fd0\u884c）<\/p>\n

\u4ee5\u4e0a\u5c31\u662f\u6b64\u6b21\u5b66\u4e60\u7684\u5185\u5bb9\u8bb0\u5f55<\/p>\n

\u5982\u679c\u6211\u5728\u6b64\u6b21\u5b66\u4e60\u8bb0\u5f55\u4e2d\u6709\u758f\u5ffd\u7684\u5730\u65b9\u8bf7\u60a8\u6279\u8bc4\u6307\u51fa\u6211\u4e0b\u6b21\u4f1a\u7ee7\u7eed\u52aa\u529b<\/p>\n

\u671f\u5f85\u60a8\u7684\u6279\u8bc4\u548c\u5efa\u8bae！！！<\/p>\n","protected":false},"excerpt":{"rendered":"

int\u00a0 a\u00a0 \u00a0 100;
\nint\u662f\u7c7b\u578b\u00a0 a\u662f\u53d8\u91cf\u00a0 100\u662f\u6570\u636e. \u6570\u636e\u7c7b\u578b\u5927\u5c0f\u548csizeof\u5173\u952e\u5b57 sizeof(a);\u00a0\u00a0\/\/\u6c42a\u7684\u5927\u5c0f. \u4f8b: \u53d8\u91cf\u4e0e\u5e38\u91cf
\n\u53d8\u91cf\u5206\u7c7b
\n\u5168\u5c40\u53d8\u91cf
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