{"id":65027,"date":"2026-01-24T12:48:25","date_gmt":"2026-01-24T04:48:25","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/65027.html"},"modified":"2026-01-24T12:48:25","modified_gmt":"2026-01-24T04:48:25","slug":"%e3%80%90c-c%e3%80%91%e5%92%8c%e6%95%b0%e7%bb%84%e6%9c%89%e5%85%b3%e7%9a%84%e5%87%a0%e4%b8%aa%e5%87%bd%e6%95%b0%ef%bc%88%e8%8c%83%e5%9b%b4-for%ef%bc%8cauto-%e5%85%b3%e9%94%ae%e5%ad%97%ef%bc%8c-mem","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/65027.html","title":{"rendered":"\u3010C \/ C++\u3011\u548c\u6570\u7ec4\u6709\u5173\u7684\u51e0\u4e2a\u51fd\u6570\uff08\u8303\u56f4 for\uff0cauto \u5173\u952e\u5b57\uff0c memset, memcpy)"},"content":{"rendered":"

1.\u8303\u56f4 for \u7684\u8ba4\u8bc6\u548c\u4f7f\u7528<\/h2>\n

\u5982\u679c\u4f60\u5b66\u8fc7 c \u8bed\u8a00，\u76f8\u4fe1\u4f60\u5bf9 for \u5faa\u73af\u5e76\u4e0d\u964c\u751f\u3002\u4f46\u662f\u8fd9\u4e2a\u8303\u56f4 for \u4f60\u5c31\u4e0d\u4e00\u5b9a\u89c1\u8fc7\u4e86\u3002\"\"<\/p>\n

\u8fd9\u4e2a\u51fd\u6570\u662f\u4e00\u4e2a\u4e13\u95e8\u670d\u52a1\u4e8e\u6570\u7ec4\u7684\u51fd\u6570，\u901a\u8fc7\u5b83\u6211\u4eec\u53ef\u4ee5\u5f88\u8f7b\u6613\u7684\u5b9e\u73b0\u5bf9\u6570\u7ec4\u7684\u904d\u5386\u3002<\/p>\n

#include<iostream>
\nusing namespace std;
\nint main()
\n{
\nint arr[5] = {1,2,3,4,5};
\nfor(int e : arr)
\n{
\ncout << e << ' '; \/\/\u8f93\u51fa1 2 3 4 5
\n}
\nreturn 0;
\n}<\/p>\n

\u6709\u53ef\u80fd\u5728\u4f60\u7684\u7f16\u8bd1\u5668\u4e0a\u65e0\u6cd5\u6210\u529f\u7684\u8fd0\u884c\u8fd9\u6bb5\u4ee3\u7801\u3002\u5982\u679c\u4f60\u7684\u62a5\u9519\u63d0\u793a\u7684\u662f\u4ec0\u4e48:based on …… for,\u90a3\u4f60\u5c31\u8bf4\u660e\u4f60\u7684\u7f16\u8bd1\u5668\u7684\u7248\u672c\u4e0d\u652f\u6301\u8fd9\u79cd\u8bed\u6cd5\u3002\u5982\u679c\u4f60\u7528\u7684\u8f6f\u4ef6\u662f dev C++，\u90a3\u6211\u5728\u6587\u7ae0\u7684\u6700\u540e\u5c31\u4f1a\u6559\u4f60\u5e94\u8be5\u5982\u4f55\u53bb\u4fee\u6539，\u800c\u5982\u679c\u4f60\u7528\u7684\u662f\u5176\u4ed6\u7684\u7f16\u8bd1\u5668，\u4f60\u53ef\u4ee5\u5728\u7f51\u4e0a\u641c\u4e00\u641c\u4fee\u6539\u65b9\u5f0f\u3002<\/p>\n

\u8fd9\u4e2a\u4ee3\u7801\u7684\u903b\u8f91\u5176\u5b9e\u5c31\u662f\u5728 for \u4e4b\u540e\u7684\u62ec\u53f7\u91cc，\u5148\u786e\u5b9a\u6570\u636e\u7c7b\u578b，\u521b\u5efa\u4e00\u4e2a\u53d8\u91cf，\u7136\u540e\u628a\u6570\u7ec4\u4e2d\u7684\u5185\u5bb9\u4e00\u4e2a\u63a5\u4e00\u4e2a\u7684\u590d\u5236\u5230\u8fd9\u4e2a\u53d8\u91cf\u91cc，\u5e76\u4e14\u6bcf\u8d4b\u503c\u4e00\u4e2a\u5c31\u6267\u884c\u4e00\u904d for \u5faa\u73af\u91cc\u9762\u7684\u64cd\u4f5c\u3002<\/span><\/p>\n

\u5e76\u4e14\u4f60\u5bf9 e \u8fd9\u4e2a\u53d8\u91cf\u7684\u4fee\u6539\u5e76\u4e0d\u4f1a\u4fee\u6539\u6570\u7ec4\u672c\u8eab\u8fd9\u4e2a\u51fd\u6570\u7684\u597d\u5904\u5c31\u662f\u5b83\u4e66\u5199\u7279\u522b\u7684\u65b9\u4fbf，\u5f88\u8f7b\u6613\u5730\u5b9e\u73b0\u4e86\u5bf9\u6570\u7ec4\u7684\u904d\u5386\u3002\u4f46\u7f3a\u70b9\u4e5f\u662f\u7531\u4e8e\u8fd9\u4e2a\u539f\u56e0，\u5b83\u53ea\u80fd\u5bf9\u6570\u7ec4\u5b9e\u884c\u904d\u5386，\u800c\u4e0d\u80fd\u5bf9\u7279\u5b9a\u7684\u51e0\u4e2a\u5143\u7d20\u8fdb\u884c\u8bbf\u95ee\u3002<\/span><\/p>\n

2. auto \u5173\u952e\u5b57<\/h2>\n

automation \u81ea\u52a8\u5316，\u8fd9\u4e2a\u5173\u952e\u5b57，\u548c\u8fd9\u4e2a\u610f\u601d\u6709\u70b9\u5173\u8054，\u5b83\u7684\u529f\u80fd\u662f\u81ea\u52a8\u7684\u8bc6\u522b\u53d8\u91cf\u7684\u6570\u636e\u7c7b\u578b\u3002<\/span><\/p>\n

#include<iostream>
\nusing namespace std;
\nint main()
\n{
\nauto a = 3.14;
\nauto c = 'x';
\nauto b = 4;
\ncout << a << ' ' << b << ' ' << c << endl;
\n \/\/\u8f93\u51fa 3.14 x 4
\nreturn 0;
\n}<\/p>\n

\u4e4b\u6240\u4ee5\u628a\u5b83\u548c\u8303\u56f4 for \u653e\u5728\u4e00\u5757\u8bb2，\u5c31\u662f\u56e0\u4e3a\u8fd9\u4e24\u4e2a\u7ecf\u5e38\u914d\u5957\u4f7f\u7528\u3002\u5728\u4e00\u4e9b\u60c5\u51b5\u4e0b，\u5728\u521b\u5efa\u53d8\u91cf\u7684\u65f6\u5019，\u6570\u636e\u7c7b\u578b\u5c31\u4f1a\u9009\u62e9 auto<\/p>\n

\u4e0a\u9762\u662f\u5728 Dev C++ \u4e0a\u5199\u7684\u4ee3\u7801，\u4f46\u662f\u5982\u679c\u4f60\u628a\u56fe\u6848\u7684\u4ee3\u7801\u6362\u5728 vs，\u8fd9\u6837\u7684\u8bdd,\u5c31\u4f1a\u51fa\u73b0\u8fd9\u6837\u7684\u6548\u679c\"\"<\/p>\n

3.memset \u8bbe\u7f6e\u6570\u7ec4\u5185\u5bb9<\/h2>\n

mem \u4ee3\u8868 memory (\u8bb0\u5fc6）\u5728\u8ba1\u7b97\u673a\u4e2d\u591a\u8868\u793a\u5185\u5b58\u7684\u610f\u601d， set \u8bbe\u7f6e\u3002<\/p>\n

\"\"<\/p>\n

#include<iostream>
\n#include<cstring>
\nusing namespace std;
\nint main()
\n{
\nchar arr[15] = "hello world";
\nmemset(arr, 'x', 5);
\n \/\/\u8f93\u51fa xxxxx world
\ncout << arr << endl;
\nreturn 0;
\n}<\/p>\n

\u5927\u5bb6\u5728\u4f7f\u7528\u8fd9\u4e2a\u51fd\u6570\u65f6\u6709\u4e24\u4e2a\u70b9\u662f\u9700\u8981\u6ce8\u610f\u7684，\u7b2c\u4e00\u4e2a\u662f\u6211\u8bbe\u7f6e\u7684\u503c\u53ea\u80fd\u662f\u4e00\u4e2a\u5355\u4e2a\u7684\u5b57\u7b26\u6216\u8005\u662f\u6570\u5b57\u3002\u6bd4\u5982\u8bf4\u6211\u8fd9\u91cc\u60f3\u628a\u5b83\u6539\u6210\u4e00\u4e2a "xx" \u662f\u4e0d\u53ef\u4ee5\u7684\u3002\u8fd8\u6709\u4e00\u4e2a\u5c31\u662f\u540e\u9762\u6570\u5b57\u8868\u793a\u7684\u662f\u5b57\u8282\u6570，\u800c\u5e76\u975e\u4f60\u8981\u4fee\u6539\u503c\u7684\u591a\u5c11<\/span><\/p>\n

#include<iostream>
\n#include<cstring>
\nusing namespace std;
\nint main()
\n{
\nint arr[5] = {1,2,3,4,5};
\nmemset(arr, 1, 5);
\nfor(int e : arr)
\n{
\ncout << e << ' ';
\n}
\n\/\/\u6253\u5370 16843009 1 3 4 5
\nreturn 0;
\n } <\/p>\n

\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d\u6211\u4fee\u6539\u7684\u662f5\u4e2a\u5b57\u8282\u6570，\u800c\u6211\u4eec\u5df2\u77e5\u6574\u578b\u6240\u5360\u7684\u5b57\u8282\u6570\u662f4\u4e2a\u5b57\u8282，\u90a3\u53ea\u4f1a\u5b8c\u5168\u4fee\u6539\u7b2c\u4e00\u4e2a\u5143\u7d20，\u7136\u540e\u7b2c\u4e8c\u4e2a\u5143\u7d20\u5b83\u4f1a\u88ab\u90e8\u5206\u4fee\u6539\u3002<\/p>\n

\u5177\u4f53\u662f\u5982\u4f55\u4fee\u6539\u7684？\u5982\u679c\u4f60\u6ca1\u6709\u529e\u6cd5\u4e86\u7406\u89e3\u7684\u8bdd，\u6211\u53ef\u4ee5\u7ed9\u4f60\u5177\u4f53\u7684\u5c55\u73b0\u4ed6\u7684\u8fc7\u7a0b\u3002<\/p>\n

\u9996\u51481\u7684\u5341\u516d\u8fdb\u5236\u4f4d 00 00 00 01 ，\u56e0\u4e3a\u88ab\u4fee\u6539\u7684\u5927\u5c0f\u8d85\u8fc7\u4e86 4\u4e2a\u5b57\u8282\u6570，\u6240\u4ee5\u88ab\u4fee\u6539\u4e3a 01 01 01 01<\/p>\n

，\"\"<\/p>\n

\u800c\u7b2c\u4e8c\u4e2a\u6570 2\u7684\u5341\u516d\u8fdb\u5236\u8868\u793a\u5f62\u5f0f\u4e3a 00 00 00 02 \u56e0\u4e3a\u53ea\u88ab\u4fee\u6539\u4e86\u4e00\u4e2a\u5b57\u8282，\u6240\u4ee5\u5c31\u53d8\u6210\u4e86 00 00 00 01<\/p>\n

\u5982\u679c\u4f60\u89c9\u5f97\u6bcf\u6b21\u6211\u8c03\u7528\u8fd9\u4e2a\u51fd\u6570\u7684\u65f6\u5019\u90fd\u9700\u8981\u53bb\u8ba1\u7b97\u5b57\u8282\u6570\u6709\u4e9b\u9ebb\u70e6，\u90a3\u8fd9\u91cc\u80fd\u63d0\u4f9b\u4e86\u4e24\u79cd\u73a9\u6cd5\u7b80\u5316\u4f60\u7684\u8ba1\u7b97，\u4e00\u4e2a\u662f\u5f53\u4f60\u8981\u5168\u90e8\u4fee\u6539\u65f6\u4f7f\u7528\u7684\u3002\u53e6\u5916\u4e00\u4e2a\u4f60\u53ea\u9700\u7528\u5f85\u4fee\u6539\u7684\u4e2a\u6570 * \u6bcf\u4e2a\u6570\u636e\u6240\u5360\u7684\u5b57\u8282\u6570\u5373\u53ef<\/p>\n

#include<iostream>
\n#include<cstring>
\nusing namespace std;
\nint main()
\n{
\nint arr[5] = {1,2,3,4,5};
\nmemset(arr, 1, sizeof(arr)); \/\/\u5168\u90e8\u4fee\u6539\u65f6\u4f7f\u7528
\nfor(int e : arr)
\n{
\ncout << e << ' ';
\n} \/\/16843009 16843009 16843009 16843009 16843009<\/p>\n

cout << endl;
\n \/\/\u5f85\u4fee\u6539\u4e2a\u6570 * \u6bcf\u4e2a\u6240\u5360\u7684\u5b57\u8282\u6570
\nmemset(arr, 0, 4 * sizeof(int));
\nfor(int e : arr)
\n{
\ncout << e << ' ';
\n} \/\/ 0 0 0 0 16843009
\nreturn 0;
\n } <\/p>\n

4.memcpy \u62f7\u8d1d\u6570\u7ec4\u5185\u5bb9<\/h2>\n

mem \u4ee3\u8868 memory \u5185\u5b58，cpy \u4ee3\u8868 copy\"\"<\/p>\n

\u6211\u4eec\u8fd9\u4e2a\u51fd\u6570\u65f6\u9700\u8981\u901a\u8fc7\u4f20\u4e09\u4e2a\u53c2\u6570，\u7b2c\u4e00\u4e2a\u662f\u5e0c\u671b\u88ab\u590d\u5236\u5230\u7684\u6570\u7ec4\u7684\u6307\u9488，\u5bf9\u5e94\u7684\u662f destination\u3002 \u7b2c\u4e8c\u4e2a\u662f\u590d\u5236\u7684\u6765\u6e90\u6570\u7ec4\u7684\u6307\u9488\u5bf9\u5e94\u7684\u662f source\u3002\u7b2c\u4e09\u4e2a\u662f\u4f60\u6240\u8981\u590d\u5236\u7684\u5185\u5bb9\u7684\u5b57\u8282\u4e2a\u6570\u3002<\/p>\n

#include<iostream>
\n#include<cstring> \/\/ memcpy\u9700\u8981\u5305\u542b\u7684\u5934\u6587\u4ef6
\nusing namespace std;
\nint main()
\n{
\nint arr[10] = {1,2,3,4,5,6,7,8,9,10};
\nint num[10] = {0};
\n \/\/\u6570\u7ec4\u540d\u4ee3\u8868\u7684\u5373\u662f\u5730\u5740
\nmemcpy(num, arr, sizeof(arr));
\nfor(int e : num)
\n{
\ncout << e << ' ';
\n}
\n\/\/\u8f93\u51fa 1 2 3 4 5 6 7 8 9 10
\nreturn 0;
\n}<\/p>\n

5.\u00a0\u4f7f dev C++\u652f\u6301 c++ 11\u7684\u4fee\u6539\u65b9\u5f0f<\/h2>\n

\"\"<\/p>\n

\u5927\u5bb6\u5148\u70b9\u6700\u4e0a\u9762\u7684\u8fd9\u4e2a\u5de5\u5177，\u7136\u540e\u70b9\u7f16\u8bd1\u9009\u9879\u3002<\/p>\n

\"\"<\/p>\n

\u52fe\u9009\u7f16\u8bd1\u65f6\u52a0\u5165\u7684\u547d\u4ee4，\u8f93\u5165 -std=c++11，\u6700\u540e\u70b9\u51fb\u786e\u5b9a\u5c31\u53ef\u4ee5\u4e86<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

1.\u8303\u56f4 for \u7684\u8ba4\u8bc6\u548c\u4f7f\u7528\u5982\u679c\u4f60\u5b66\u8fc7 c \u8bed\u8a00，\u76f8\u4fe1\u4f60\u5bf9 for \u5faa\u73af\u5e76\u4e0d\u964c\u751f\u3002\u4f46\u662f\u8fd9\u4e2a\u8303\u56f4 for \u4f60\u5c31\u4e0d\u4e00\u5b9a\u89c1\u8fc7\u4e86\u3002\u8fd9\u4e2a\u51fd\u6570\u662f\u4e00\u4e2a\u4e13\u95e8\u670d\u52a1\u4e8e\u6570\u7ec4\u7684\u51fd\u6570，\u901a\u8fc7\u5b83\u6211\u4eec\u53ef\u4ee5\u5f88\u8f7b\u6613\u7684\u5b9e\u73b0\u5bf9\u6570\u7ec4\u7684\u904d\u5386\u3002#include
\nusing namespace std;
\nint main()
\n{
\nint arr[5] {1,2,3,4,5};
\nfor(int e : arr)
\n{
\ncout << e << ; \/\/\u8f93\u51fa1 2 3 4 5<\/p>\n","protected":false},"author":2,"featured_media":65020,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,190],"topic":[],"class_list":["post-65027","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-c","tag-190"],"yoast_head":"\n\u3010C \/ C++\u3011\u548c\u6570\u7ec4\u6709\u5173\u7684\u51e0\u4e2a\u51fd\u6570\uff08\u8303\u56f4 for\uff0cauto \u5173\u952e\u5b57\uff0c memset, memcpy) - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/65027.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010C \/ C++\u3011\u548c\u6570\u7ec4\u6709\u5173\u7684\u51e0\u4e2a\u51fd\u6570\uff08\u8303\u56f4 for\uff0cauto \u5173\u952e\u5b57\uff0c memset, memcpy) - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"1.\u8303\u56f4 for \u7684\u8ba4\u8bc6\u548c\u4f7f\u7528\u5982\u679c\u4f60\u5b66\u8fc7 c \u8bed\u8a00，\u76f8\u4fe1\u4f60\u5bf9 for \u5faa\u73af\u5e76\u4e0d\u964c\u751f\u3002\u4f46\u662f\u8fd9\u4e2a\u8303\u56f4 for \u4f60\u5c31\u4e0d\u4e00\u5b9a\u89c1\u8fc7\u4e86\u3002\u8fd9\u4e2a\u51fd\u6570\u662f\u4e00\u4e2a\u4e13\u95e8\u670d\u52a1\u4e8e\u6570\u7ec4\u7684\u51fd\u6570，\u901a\u8fc7\u5b83\u6211\u4eec\u53ef\u4ee5\u5f88\u8f7b\u6613\u7684\u5b9e\u73b0\u5bf9\u6570\u7ec4\u7684\u904d\u5386\u3002#include using namespace std; 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