{"id":103,"date":"2018-09-19T08:48:00","date_gmt":"2018-09-19T00:48:00","guid":{"rendered":"https:\/\/www.wangliguang.cn\/?p=103"},"modified":"2025-08-05T09:58:00","modified_gmt":"2025-08-05T01:58:00","slug":"c%e7%b1%bb%e5%ae%9a%e4%b9%89%ef%bc%8c-h%e6%96%87%e4%bb%b6%e4%b8%8e-cpp%e6%96%87%e4%bb%b6%e4%b9%8b%e9%97%b4%e7%9a%84%e5%85%b3%e7%b3%bb%e4%bb%a5%e5%8f%8a%e6%9d%a1%e4%bb%b6%e7%bc%96%e8%af%91","status":"publish","type":"post","link":"https:\/\/wangliguang.cn\/?p=103","title":{"rendered":"C++\u7c7b\u5b9a\u4e49\uff0c.h\u6587\u4ef6\u4e0e.cpp\u6587\u4ef6\u4e4b\u95f4\u7684\u5173\u7cfb\u4ee5\u53ca\u6761\u4ef6\u7f16\u8bd1"},"content":{"rendered":"<p>\u5927\u5bb6\u6709\u6ca1\u6709\u8003\u8651\u8fc7\uff0c\u6211\u4eec\u95ee\u4ec0\u4e48\u8981\u5c06\u4e00\u4e2a\u7c7b\u5b9a\u4e49\u548c\u7c7b\u5b9e\u73b0\u5206\u5f00\u5462\uff1f <br \/>\n\u672c\u5468\u7684Windows\u7f16\u7a0b\u8bfe\uff0c\u8001\u5e08\u6f14\u793a\u4e86\u4e00\u4e2a\u4f8b\u5b50\uff0c\u5b8c\u7f8e\u5730\u8bb2\u89e3\u4e86\u8fd9\u4e2a\u95ee\u9898\uff0c\u5728\u6211\u770b\u6765\u662f\u89e3\u7b54\u4e86\u6211\u4e00\u76f4\u4ee5\u6765\u7684\u7591\u95ee\uff0c\u4e0b\u9762\u628a\u6211\u7684\u4e00\u4e9b\u4f53\u4f1a\u6574\u7406\u5728\u4e0b\u9762\u3002<\/p>\n<ul>\n<li>\u4f7f\u6574\u4e2a\u5927\u7684\u7a0b\u5e8f\u6216\u8005\u8bf4\u9879\u76ee\u663e\u5f97\u903b\u8f91\u6e05\u6670\u3001\u5206\u660e<\/li>\n<li>\u6700\u91cd\u8981\u7684\uff0c\u4e5f\u662f\u8001\u5e08\u5728\u8fd9\u5802\u8bfe\u4e0a\u5c55\u793a\u51fa\u6765\u7684\uff0c\u5c31\u662f\u5728\u51fa\u73b0\u7c7b\u7ec4\u5408\u8fd9\u79cd\u60c5\u51b5\uff0c\u4e5f\u5c31\u662f\u7c7b\u91cc\u9762\u7684\u6570\u636e\u6210\u5458\u4f7f\u7528\u4e86\u5176\u4ed6\u7c7b\u7684\u5bf9\u8c61\u7684\u65f6\u5019\uff0c\u5982\u679c\u4e0d\u91c7\u7528\u8fd9\u79cd\u5f62\u5f0f\uff0c\u5c31\u9700\u8981\u8003\u8651\u5f88\u591a\u54ea\u4e2a\u7c7b\u653e\u5728\u524d\u9762\u8fd9\u4e00\u7c7b\u7684\u95ee\u9898\uff0c\u975e\u5e38\u9ebb\u70e6\u3002<\/li>\n<\/ul>\n<p>\u8001\u5e08\u4e0a\u8bfe\u8bb2\u7684\u4f8b\u5b50\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n<pre class=\"prettyprint\"><code class=\"language-C++ hljs cpp\"><span class=\"hljs-preprocessor\">#include <iostream><\/span>\n<span class=\"hljs-keyword\">using<\/span> <span class=\"hljs-keyword\">namespace<\/span> <span class=\"hljs-built_in\">std<\/span>;\n<span class=\"hljs-keyword\">class<\/span> A\n{\n<span class=\"hljs-keyword\">private<\/span>:\n    B b;\n<span class=\"hljs-keyword\">public<\/span>:\n    <span class=\"hljs-keyword\">void<\/span> doSomething();\n};\n<span class=\"hljs-keyword\">void<\/span> A::doSomething()\n{ b.doSomething(); }\n<span class=\"hljs-keyword\">class<\/span> B\n{\n<span class=\"hljs-keyword\">public<\/span>:\n    <span class=\"hljs-keyword\">void<\/span> doSomething();\n};\n<span class=\"hljs-keyword\">void<\/span> B::doSomething()\n{ <span class=\"hljs-built_in\">cout<\/span><<<span class=\"hljs-string\">\"OK\"<\/span><<endl; }\n<span class=\"hljs-keyword\">int<\/span> main(<span class=\"hljs-keyword\">int<\/span> argc, <span class=\"hljs-keyword\">char<\/span> *argv[])\n{\n    A * a = <span class=\"hljs-keyword\">new<\/span> A;\n    a->doSomething();\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\n}\n<\/code><\/pre>\n<p>\u4e0a\u9762\u7684\u7a0b\u5e8f\u662f\u5426\u80fd\u901a\u8fc7\u7f16\u8bd1\u5462\uff1f\u7b54\u6848\u5f53\u7136\u662f\u5426\u5b9a\u7684\u3002\u539f\u56e0\u5c31\u5728\u4e8eA\u91cc\u4f7f\u7528\u4e86B\u7c7b\u7684\u5bf9\u8c61\uff0c\u53c8\u7531\u4e8eA\u7c7b\u5b9a\u4e49\u5728\u524d\u9762\uff0c\u7f16\u8bd1\u5668\u4f1a\u4e0d\u77e5\u9053B\u7a76\u7adf\u662f\u4ec0\u4e48\uff0c\u81ea\u7136\u4e5f\u65e0\u6cd5B b. <br \/>\n\u89e3\u51b3\u65b9\u6cd5\u5f53\u7136\u53ef\u4ee5\u5c06\u7c7bB\u5b9a\u4e49\u5728\u524d\u9762\uff0c\u4e5f\u53ef\u4ee5\u5728\u7c7bA\u5b9a\u4e49\u524d\u9762\u52a0\u4e00\u53e5<strong><font color=\"red\">class B\uff1b<\/font><\/strong>\u7684\u524d\u7f6e\u58f0\u660e\u3002\u4f46\u5982\u679c\u7c7b\u53d8\u5f97\u66f4\u591a\uff0c\u8fd9\u6837\u5c31\u975e\u5e38\u9ebb\u70e6\u4e86\u3002 <br \/>\n<strong><font color=\"red\">\u53e6\u5916\uff0c\u5c06\u7c7bA\u4e2d\u7684B b\u6539\u4e3aB * b\u4e5f\u53ef\u901a\u8fc7\u7f16\u8bd1\uff0c\u539f\u56e0\u5728\u4e8e\uff0cB b\u7684\u65f6\u5019\u7f16\u8bd1\u5668\u9700\u8981\u77e5\u9053B\u7a76\u7adf\u662f\u4ec0\u4e48\uff0c\u53ea\u6709\u8fd9\u6837\u624d\u80fd\u7ed9\u5b83\u5206\u914d\u7a7a\u95f4\u3002\u800cB * b\u7684\u8bdd\uff0c\u7f16\u8bd1\u5668\u77e5\u9053\u8fd9\u662f\u4e00\u4e2a\u6307\u9488\u5c31\u8db3\u591f\u4e86\uff0c\u56e0\u4e3a\u6307\u9488\u7c7b\u578b\u4fdd\u5b58\u4e00\u4e2a\u5730\u5740\uff0c\u5927\u5c0f\u663e\u7136\u662f\u5df2\u77e5\u7684\u3002<\/font><\/strong> <br \/>\n\u56e0\u6b64\uff0c\u5c06\u7c7b\u5b9a\u4e49\u548c\u7c7b\u5b9e\u73b0\u5206\u5f00\u5c31\u663e\u5f97\u975e\u5e38\u91cd\u8981\u4e86\u3002<br \/>\n\u2003\u2003Windows\u7f16\u7a0b\u8bfe\u4e0a\uff0c\u8001\u5e08\u4ed4\u7ec6\u8bb2\u4e86.h\u548c.cpp\u6587\u4ef6\u3002\u5728\u5c06\u7c7b\u5b9a\u4e49\u548c\u7c7b\u5b9e\u73b0\u5206\u5f00\u7684\u65f6\u5019\uff0c\u9047\u5230\u7684\u95ee\u9898\u53ef\u771f\u4e0d\u5c11\u3002 <br \/>\n\u2003\u2003\u5176\u4e2d\u4e00\u4e2a\u95ee\u9898\u5c31\u662f\uff0cA\u3001B\u4e24\u4e2a\u7c7b\uff0cA\u7684\u6570\u636e\u6210\u5458\u6709B\u7684\u5bf9\u8c61\uff0c\u5728a.cpp\u91cc\u6211\u4eec\u8981\u5305\u542bb.h,\u5728mian\u91cc\u6211\u4eec\u8981\u5305\u542ba.h\u548cb.h\uff0c\u8fd9\u65f6Qt Creator\u4f1a\u62a5\u9519\uff0c\u63d0\u9192\u4f60\u51fa\u73b0\u4e86\u95ee\u9898<\/p>\n<blockquote><p>\n  E:\\My_files\\My_study\\Computer_Science_2017-2018-2\\windows programming\\180516094934289_4thClassCode\\4thClassCode\\convertAandBtoHeader\\b.h:4: error: redefinition of \u2018class B\u2019 <br \/>\n   class B <br \/>\n         ^\n<\/p><\/blockquote>\n<p>\u2003\u2003\u663e\u793aB\u88ab\u91cd\u590d\u5b9a\u4e49\u4e86\u3002\u6211\u4eec\u5f53\u7136\u53ef\u4ee5\u5728main\u91cc\u4e0d\u5199#include \u201c b.h\u201d,\u56e0\u4e3a\u6211\u4eec\u53ef\u4ee5\u5206\u6790\u51fa\u8fd9\u4e2a\u5df2\u7ecf\u5728a.cpp\u91cc\u51fa\u73b0\uff0c\u5728#include \u201ca.h\u201d\u65f6\u4f1a\u81ea\u5df1\u5e26\u4e0a\u3002\u4f46\u662f\u5f53\u7c7b\u4e00\u591a\u6211\u4eec\u5c31\u8bb0\u4e0d\u6e05\u4e86\uff0c\u8fd9\u65f6\u5019\u5c31\u9700\u8981\u501f\u52a9\u5b8f\u4f7f\u7528\u6761\u4ef6\u7f16\u8bd1\u3002<\/p>\n<blockquote><p>\n  #ifndef B_H<br \/>\n  #define B_H<br \/>\n  \u5185\u5bb9 <br \/>\n  #endif \/\/B_H \n<\/p><\/blockquote>\n<p>\u2003\u2003\u90a3\u4e48\u4f5c\u7528\u662f\u4ec0\u4e48\u5462\uff1f\u4e0a\u9762B_H\u53ef\u4ee5\u4efb\u610f\u7684\u8d77\u540d\u5b57\uff0c\u53ea\u662f\u4e00\u4e2a\u7b26\u53f7\uff0c\u8868\u793a\u8fd9\u4e2a\u7b26\u53f7\u5982\u679c\u8fd8\u6ca1\u6709\u88ab\u5b8f\u5b9a\u4e49\u7684\u8bdd\uff0c\u5c31\u5b9a\u4e49\u5b83\u3002\u8fd9\u6837\uff0c\u5f53b.h\u5df2\u7ecf\u88abinclude\u8fc7\u4ee5\u540e\uff0cB_H\u76f8\u5f53\u4e8e\u5df2\u7ecf\u88ab\u5b8f\u5b9a\u4e49\u8fc7\u4e86\uff0c\u4e4b\u540e\u518d\u88abinclude\uff0c\u5185\u5bb9\u5c31\u4e0d\u4f1a\u518d\u6267\u884c\u4e86\uff0c\u4e5f\u5c31\u89e3\u51b3\u4e86\u95ee\u9898\u3002 <br \/>\nC++\u7684\u6761\u4ef6\u7f16\u8bd1\u8fd8\u6709\u5176\u4ed6\u7684\u5f62\u5f0f\uff0c\u5177\u4f53\u7528\u6cd5\u4e3a\uff1a <br \/>\n\u5f62\u5f0f\u4e00\uff1a <br \/>\n #if   \u5e38\u91cf\u8868\u8fbe\u5f0f <br \/>\n            \u7a0b\u5e8f\u6bb5 <br \/>\n #endif <br \/>\n \u5f53\u5e38\u91cf\u8868\u8fbe\u5f0f\u975e\u96f6\u65f6\u7f16\u8bd1\u7a0b\u5e8f\u6bb5 <br \/>\n \u5f62\u5f0f\u4e8c\uff1a <br \/>\n #ifndef \u5e38\u91cf\u8868\u8fbe\u5f0f <br \/>\n            \u7a0b\u5e8f\u6bb51 <br \/>\n        #else <br \/>\n            \u7a0b\u5e8f\u6bb52 <br \/>\n        #endif <br \/>\n        \u5f53\u5e38\u91cf\u8868\u8fbe\u5f0f\u4e3a\u975e\u96f6\u65f6\u7f16\u8bd1\u7a0b\u5e8f\u6bb51\uff0c\u5426\u5219\u7f16\u8bd1\u7a0b\u5e8f\u6bb52 <br \/>\n \u5f62\u5f0f\u4e09\uff1a <br \/>\n #if  \u5e38\u91cf\u8868\u8fbe\u5f0f1 <br \/>\n            \u7a0b\u5e8f\u6bb51 <br \/>\n        #elif  \u5e38\u91cf\u8868\u8fbe\u5f0f2 <br \/>\n            \u7a0b\u5e8f\u6bb52 <br \/>\n        \u2026\u2026 <br \/>\n        \u2026\u2026 <br \/>\n        #elif  \u5e38\u91cf\u8868\u8fbe\u5f0fn <br \/>\n            \u7a0b\u5e8f\u6bb5n <br \/>\n        #else <br \/>\n            \u7a0b\u5e8f\u6bb5n+1 <br \/>\n        #endif <br \/>\n   \u5f62\u5f0f\u56db\uff1a\u4e5f\u5c31\u662f\u6700\u4e0a\u9762\u8bb2\u7684\u6761\u4ef6\u7f16\u8bd1<br \/>\n\u53c2\u8003\u6587\u732e\uff1a\u90d1\u8389\u7b49.C++\u8bed\u8a00\u7a0b\u5e8f\u8bbe\u8ba1[M].4\u7248.\u5317\u4eac\uff1a\u6e05\u534e\u5927\u5b66\u51fa\u7248\u793e\uff0c2010. <br \/>\n\u6b22\u8fce\u8bbf\u95ee\u6211\u7684\u7f51\u7ad9\u2014\u2014Luke\u7684\u6280\u672f\u5c0f\u7ad9\uff1a<a href=\"http:\/\/119.23.31.14\" rel=\"nofollow\">http:\/\/119.23.31.14<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5927\u5bb6\u6709\u6ca1\u6709\u8003\u8651\u8fc7\uff0c\u6211\u4eec\u95ee\u4ec0\u4e48\u8981\u5c06\u4e00\u4e2a\u7c7b\u5b9a\u4e49\u548c\u7c7b\u5b9e\u73b0\u5206\u5f00\u5462\uff1f \u672c\u5468\u7684Windows\u7f16\u7a0b\u8bfe\uff0c\u8001\u5e08\u6f14\u793a\u4e86\u4e00\u4e2a\u4f8b\u5b50\uff0c\u5b8c&hellip; <a href=\"https:\/\/wangliguang.cn\/?p=103\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">C++\u7c7b\u5b9a\u4e49\uff0c.h\u6587\u4ef6\u4e0e.cpp\u6587\u4ef6\u4e4b\u95f4\u7684\u5173\u7cfb\u4ee5\u53ca\u6761\u4ef6\u7f16\u8bd1<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[27],"class_list":["post-103","post","type-post","status-publish","format-standard","hentry","category-c-c","tag-c-c"],"_links":{"self":[{"href":"https:\/\/wangliguang.cn\/index.php?rest_route=\/wp\/v2\/posts\/103","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wangliguang.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wangliguang.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wangliguang.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wangliguang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=103"}],"version-history":[{"count":1,"href":"https:\/\/wangliguang.cn\/index.php?rest_route=\/wp\/v2\/posts\/103\/revisions"}],"predecessor-version":[{"id":683,"href":"https:\/\/wangliguang.cn\/index.php?rest_route=\/wp\/v2\/posts\/103\/revisions\/683"}],"wp:attachment":[{"href":"https:\/\/wangliguang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=103"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wangliguang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=103"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wangliguang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}