{"id":99844,"date":"2022-03-31T12:56:24","date_gmt":"2022-03-31T04:56:24","guid":{"rendered":"http:\/\/www.zhushiyao.com\/?p=99844"},"modified":"2022-03-31T12:57:37","modified_gmt":"2022-03-31T04:57:37","slug":"93e8aa7a6b","status":"publish","type":"post","link":"http:\/\/www.zhushiyao.com\/?p=99844","title":{"rendered":"C++\u7f16\u7a0b\u65b0\u624b\u5bb9\u6613\u72af\u7684 10 \u79cd\u7f16\u7a0b\u9519\u8bef"},"content":{"rendered":"
\n

\u6765\u6e90\uff1ahttps:\/\/blog.csdn.net\/chenlycly<\/span><\/p>\n

\u00a0<\/p>\n

\n

\u516c\u53f8\u6bcf\u5e74\u90fd\u4f1a\u6709\u4e00\u5b9a\u7684\u4eba\u5458\u6d41\u52a8\uff0c\u76f8\u5e94\u5730\u4e5f\u4f1a\u62db\u4e00\u4e9b\u5e94\u5c4a\u751f\u8865\u5145\u8fdb\u6765\uff0c\u6307\u5bfc\u5e94\u5c4a\u751f\u5df2\u7ecf\u6210\u4e3a\u8001\u5458\u5de5\u7684\u5fc5\u4fee\u8bfe\u4e86\u3002\u5e73\u65e5\u91cc\u4f1a\u6211\u4eec\u4f1a\u7ecf\u5e38\u5e2e\u65b0\u4eba\u6392\u67e5\u4ee3\u7801\u4e2d\u7684\u95ee\u9898\uff0c\u5728\u6b64\u8fc7\u7a0b\u4e2d\u53d1\u73b0\u4e86 C++ \u65b0\u624b\u5bb9\u6613\u72af\u7684\u4e00\u4e9b\u7f16\u7a0b\u9519\u8bef\uff0c\u5728\u6b64\u7b80\u5355\u7684\u603b\u7ed3\u4e00\u4e0b\uff0c\u7ed9\u65b0\u4eba\u4eec\u63d0\u4f9b\u4e00\u4e2a\u53c2\u8003\u3002<\/p>\n

1\u3001\u6709\u4e9b\u5173\u952e\u5b57\u5728 cpp \u6587\u4ef6\u4e2d\u591a\u5199\u4e86<\/h3>\n

\u5bf9\u4e8e C++ \u7c7b\uff0c\u4e00\u4e9b\u5173\u952e\u5b57\u53ea\u8981\u5199\u5728 .h \u4e2d\u5c31\u597d\uff0ccpp \u4e2d\u5c31\u4e0d\u7528\u518d\u52a0\u4e0a\u4e86\uff0c\u6bd4\u5982 virtual\u3001static \u7b49\u5173\u952e\u5b57\uff0c\u5982\u679c\u5728 cpp \u4e2d\u591a\u5199\uff0c\u7f16\u8bd1\u5668\u4f1a\u62a5\u9519\u3002\u6bd4\u5982\u5982\u4e0b\u7684\u865a\u63a5\u53e3\u4e0e\u9759\u6001\u6210\u5458\u53d8\u91cf\u7684\u5b9a\u4e49\uff0c\u53ea\u8981\u5728\u5934\u6587\u4ef6\u4e2d\u58f0\u660e\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n

class\u00a0shape
{
\u00a0\u00a0\u00a0\u00a0virtual\u00a0Draw();
\u00a0\u00a0\u00a0\u00a0\/\/...
\u00a0\u00a0\u00a0\u00a0static\u00a0int\u00a0nLevel;
}
<\/code><\/pre>\n
2\u3001\u51fd\u6570\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u5199\u5230\u51fd\u6570\u5b9e\u73b0\u4e2d\u4e86<\/h3>\n
\u5e26\u6709\u53c2\u6570\u9ed8\u8ba4\u503c\u7684\u51fd\u6570\uff0c\u9ed8\u8ba4\u503c\u662f\u52a0\u5728\u51fd\u6570\u58f0\u660e\u5904\u7684\uff0c\u51fd\u6570\u5b9e\u73b0\u5904\u7684\u53c2\u6570\u662f\u4e0d\u9700\u8981\u5e26\u4e0a\u7684\u3002\u4e3a\u4e86\u65b9\u4fbf\u67e5\u770b\u4ee3\u7801\uff0c\u5728\u51fd\u6570\u5b9e\u73b0\u5904\u7684\u53c2\u6570\u4e2d\uff0c\u5c06\u9ed8\u8ba4\u503c\u6ce8\u91ca\u8d77\u6765\u3002\u6b63\u786e\u7684\u505a\u6cd5\u662f\uff0c\u5934\u6587\u4ef6\u4e2d\u6709\u9ed8\u8ba4\u503c\uff1a<\/p>\n
BOOL\u00a0CreateConf(\u00a0const\u00a0CString&\u00a0strConfName,\u00a0const\u00a0BOOL\u00a0bAudio\u00a0=\u00a0FALSE\u00a0);
\u5728\u51fd\u6570\u5b9e\u73b0\u5904\u7684\u53c2\u6570\u4e2d\u4e0d\u7528\u6dfb\u52a0\u9ed8\u8ba4\u503c\uff1a
BOOL\u00a0CreateConf(\u00a0const\u00a0CString&\u00a0strConfName,\u00a0const\u00a0BOOL\u00a0bAudio\/*\u00a0=\u00a0FALSE*\/\u00a0);
{
\u00a0\u00a0\u00a0\u00a0\/\/\u00a0......
}
<\/code><\/pre>\n
3\u3001\u5728\u7f16\u5199\u7c7b\u7684\u65f6\u5019\uff0c\u5728\u7c7b\u7684\u7ed3\u5c3e\u5904\u5fd8\u8bb0\u6dfb\u52a0 “;” \u5206\u53f7\u4e86<\/h3>\n
\u5728\u7c7b\u7684\u7ed3\u5c3e\u5904\u5fd8\u8bb0\u6dfb\u52a0\u5206\u53f7\uff0c\u7f16\u8bd1\u4f1a\u62a5\u9519\uff0c\u65b0\u4eba\u4eec\u6709\u53ef\u80fd\u627e\u4e86\u534a\u5929\u4e5f\u6ca1\u627e\u51fa\u5f15\u8d77\u7f16\u8bd1\u9519\u8bef\u7684\u539f\u56e0\u3002\u5176\u5b9e\u5f88\u7b80\u5355\uff0c\u5728\u7c7b\u7684\u7ed3\u5c3e\u5904\u5fd8\u8bb0\u6dfb\u52a0\u5206\u53f7\u4e86\u3002<\/p>\n
class\u00a0Shape
{
\u00a0\u00a0\u00a0\u00a0\/\/\u00a0...
};
<\/code><\/pre>\n
4\u3001\u53ea\u6dfb\u52a0\u4e86\u51fd\u6570\u58f0\u660e\uff0c\u6ca1\u6709\u51fd\u6570\u5b9e\u73b0<\/h3>\n
\u5728\u6dfb\u52a0\u7c7b\u7684\u51fd\u6570\u65f6\uff0c\u53ea\u5728\u7c7b\u7684\u5934\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4e86\u51fd\u6570\u58f0\u660e\uff0c\u4f46\u5728 cpp \u4e2d\u5374\u6ca1\u6709\u6dfb\u52a0\u51fd\u6570\u7684\u5b9e\u73b0\u3002\u5982\u679c\u5176\u4ed6\u5730\u65b9\u8c03\u7528\u5230\u8be5\u51fd\u6570\uff0c\u5728\u7f16\u8bd1\u94fe\u63a5\u7684\u65f6\u5019\u4f1a\u62a5unresolved external symbol<\/code>\u9519\u8bef\u3002\u56e0\u4e3a\u6ca1\u6709\u5b9e\u73b0\uff0c\u6240\u6709\u6ca1\u6709\u4f9b\u94fe\u63a5\u4f7f\u7528\u7684 obj \u6587\u4ef6\u3002<\/p>\n
5\u3001cpp \u6587\u4ef6\u5fd8\u8bb0\u6dfb\u52a0\u5230\u5de5\u7a0b\u4e2d\uff0c\u5bfc\u81f4\u6ca1\u6709\u751f\u6210\u4f9b\u94fe\u63a5\u4f7f\u7528\u7684 obj \u6587\u4ef6<\/h3>\n
\u5728\u6dfb\u52a0 C++ \u7c7b\u65f6\uff0c\u6211\u4eec\u4e00\u822c\u4f1a\u6dfb\u52a0 .h \u5934\u6587\u4ef6\u548c\u4e00\u4e2a .cpp \u6e90\u6587\u4ef6\u3002\u7ed3\u679c\u5fd8\u8bb0\u628a .cpp \u6587\u4ef6\u6dfb\u52a0\u5230\u5de5\u7a0b\u4e2d\u4e86\uff0c\u5373\u6ca1\u6709\u53c2\u4e0e\u7f16\u8bd1\uff0c\u6ca1\u6709\u751f\u6210\u4f9b\u94fe\u63a5\u4f7f\u7528\u7684 obj \u6587\u4ef6\u3002\u5982\u679c\u6709\u4ee3\u7801\u8c03\u7528\u5230\u8be5 C++ \u7c7b\u7684\u63a5\u53e3\uff0c\u5219\u5728\u7f16\u8bd1\u94fe\u63a5\u7684\u65f6\u5019\u4f1a\u62a5unresolved external symbol<\/code>\u9519\u8bef\uff0c\u5373\u94fe\u63a5\u4e0d\u5230\u8be5 C++ \u7c7b\u5bf9\u5e94\u7684\u63a5\u53e3\u3002<\/p>\n
6\u3001\u51fd\u6570\u4e2d\u8fd4\u56de\u4e86\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf\u7684\u5730\u5740\u6216\u8005\u5f15\u7528<\/h3>\n
\u5728\u51fd\u6570\u4e2d\u8fd4\u56de\u4e86\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf\u7684\u5730\u5740\u6216\u8005\u5f15\u7528\uff0c\u800c\u8fd9\u4e2a\u5c40\u90e8\u53d8\u91cf\u5728\u51fd\u6570\u7ed3\u675f\u65f6\u5176\u751f\u547d\u5468\u671f\u5c31\u7ed3\u675f\u4e86\uff0c\u5185\u5b58\u5c31\u88ab\u91ca\u653e\u4e86\u3002\u5f53\u5916\u90e8\u8bbf\u95ee\u5230\u8be5\u53d8\u91cf\u7684\u5185\u5b58\uff0c\u4f1a\u89e6\u53d1\u5185\u5b58\u8bbf\u95ee\u8fdd\u4f8b\u7684\u5f02\u5e38\uff0c\u56e0\u4e3a\u8be5\u53d8\u91cf\u7684\u5185\u5b58\u5df2\u7ecf\u91ca\u653e\u4e86\u3002\u6bd4\u5982\u5982\u4e0b\u7684\u9519\u8bef\u4ee3\u7801\uff1a<\/p>\n
char*\u00a0GetResult<\/span><\/span>()
{
\u00a0\u00a0\u00a0\u00a0char\u00a0chResult[100]\u00a0=\u00a0{\u00a00\u00a0};

\u00a0\u00a0\u00a0\u00a0\/\/\u00a0......

\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0chResult;
}
<\/code><\/pre>\n
7\u3001\u5fd8\u8bb0\u5c06\u7236\u7c7b\u4e2d\u7684\u63a5\u53e3\u58f0\u660e virtual \u51fd\u6570\uff0c\u5bfc\u81f4\u591a\u6001\u6ca1\u6709\u751f\u6548<\/h3>\n
\u4ee3\u7801\u4e2d\u672c\u6765\u8981\u501f\u52a9\u4e8e C++ \u591a\u6001\u7684\u865a\u51fd\u6570\u8c03\u7528\uff0c\u8c03\u7528\u5b50\u7c7b\u5b9e\u73b0\u7684\u63a5\u53e3\uff0c\u7ed3\u679c\u5fd8\u8bb0\u5728\u7236\u7c7b\u4e2d\u5c06\u5bf9\u5e94\u7684\u63a5\u53e3\u58f0\u660e\u4e3a virtual\uff0c\u5bfc\u81f4\u6ca1\u6709\u8c03\u7528\u5230\u5b50\u7c7b\u5b9e\u73b0\u7684\u51fd\u6570\u3002\u4e00\u5b9a\u8981\u8bb0\u4f4f\uff0c\u8981\u5b9e\u73b0\u591a\u6001\u4e0b\u7684\u51fd\u6570\u8c03\u7528\uff0c\u7236\u7c7b\u7684\u76f8\u5173\u63a5\u53e3\u5fc5\u987b\u58f0\u660e\u4e3a virtual\u3002<\/p>\n
class\u00a0Shape<\/span><\/span>()
{
\u00a0\u00a0\u00a0\u00a0\/\/\u00a0...

\u00a0\u00a0\u00a0\u00a0virtual\u00a0void\u00a0Draw();

\u00a0\u00a0\u00a0\u00a0\/\/\u00a0...
}
<\/code><\/pre>\n
8\u3001\u8be5\u4f7f\u7528\u53cc\u6307\u9488\u7684\u5730\u65b9\uff0c\u5374\u4f7f\u7528\u4e86\u5355\u6307\u9488<\/h3>\n
\u6709\u65f6\u6211\u4eec\u9700\u8981\u8c03\u7528\u4e00\u4e2a\u63a5\u53e3\u53bb\u83b7\u53d6\u67d0\u4e9b\u6570\u636e\uff0c\u63a5\u53e3\u4e2d\u5c06\u6570\u636e\u62f7\u8d1d\u5230\u4f20\u5165\u7684\u53c2\u6570\u5bf9\u5e94\u7684\u5185\u5b58\u4e2d\uff0c\u6b64\u65f6\u8bbe\u8ba1\u53c2\u6570\u65f6\u4f1a\u4f20\u5165\u6307\u9488\u6216\u5f15\u7528\u3002\u6211\u4eec\u5728\u8c03\u7528GetData \u4e4b\u524d\u5b9a\u4e49\u4e86\u7ed3\u6784\u4f53\u6307\u9488p\uff0c\u5e76 new \u51fa\u4e86\u5bf9\u5e94\u7684\u7ed3\u6784\u4f53\u5bf9\u8c61\u5185\u5b58\uff0c\u5e94\u8be5\u5728\u5b9a\u4e49 GetData \u63a5\u53e3\u65f6\u5e94\u8be5\u4f7f\u7528\u53cc\u6307\u9488\uff08\u6307\u9488\u7684\u6307\u9488\uff09\u7684\uff0c\u7ed3\u679c\u9519\u5199\u6210\u4e86\u5355\u6307\u9488\u3002<\/p>\n
\u6709\u95ee\u9898\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
struct\u00a0CodecInfo\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u7f16\u7801\u4fe1\u606f
{
\u00a0\u00a0\u00a0 int nFrameRate\uff1b

\u00a0\u00a0\u00a0\u00a0\/\/\u00a0...
}


CodecInfo*\u00a0pInfo\u00a0=\u00a0new\u00a0CodecInfo;

GetAudioCodecPtr()->GetCodecInfo(pInfo);\u00a0\u00a0\u00a0\/\/\u00a0\u8c03\u7528AudioCodec::GetCodecInfo\u83b7\u53d6\u7f16\u7801\u4fe1\u606f


AudioCodec::GetCodecInfo(\u00a0CodecInfo*\u00a0pInfo)\u00a0\u00a0\/\/\u00a0\u6b64\u5904\u7684\u53c2\u6570\u4e0d\u5e94\u8be5\u4f7f\u7528\u5355\u6307\u9488
{
\u00a0\u00a0\u00a0\u00a0memcpy(pInfo,\u00a0m_codecInfo,\u00a0sizeof(CodecInfo));
}
<\/code><\/pre>\n
\u4e0a\u9762\u4e2d\u7684AudioCodec::GetCodecInfo<\/code>\u63a5\u53e3\u7684\u53c2\u6570\u4e0d\u5e94\u8be5\u4e3a\u5355\u6307\u9488\uff0c\u5e94\u8be5\u7528\u53cc\u6307\u9488\uff0c\u4fee\u6539\u540e\u7684\u4ee3\u7801\u5e94\u8be5\u5982\u4e0b\uff1a<\/p>\n
AudioCodec::GetCodecInfo(\u00a0CodecInfo**\u00a0pInfo)\u00a0\u00a0\/\/\u00a0\u6b64\u5904\u7684\u53c2\u6570\u7c7b\u578b\u4f7f\u7528\u53cc\u6307\u9488
{
\u00a0\u00a0\u00a0\u00a0memcpy(*pInfo,\u00a0m_codecInfo,\u00a0sizeof(CodecInfo));
}
<\/code><\/pre>\n
9\u3001\u53d1\u5e03 exe \u7a0b\u5e8f\u65f6\uff0c\u5fd8\u8bb0\u5c06 exe \u4f9d\u8d56\u7684 C \u8fd0\u884c\u65f6\u5e93\u548c MFC \u5e93\u5e26\u4e0a<\/h3>\n
\u6bd4\u5982\u65b0\u4eba\u7528 VS-MFC \u5e93\u7f16\u5199\u4e00\u4e2a\u6d4b\u8bd5\u7528\u7684\u5de5\u5177\u8f6f\u4ef6\uff0c\u7ed3\u679c\u5728\u53d1\u5e03 release \u7248\u672c\u7a0b\u5e8f\u65f6\uff0c\u6ca1\u6709\u5c06\u7a0b\u5e8f\u4f9d\u8d56\u7684 C \u8fd0\u884c\u65f6\u5e93\u5e26\u4e0a\uff0c\u5bfc\u81f4\u8be5\u5de5\u5177\u8f6f\u4ef6\u5728\u67d0\u4e9b\u7535\u8111\u4e2d\u542f\u52a8\u62a5\u9519\uff0c\u63d0\u793a\u627e\u4e0d\u5230 C \u8fd0\u884c\u65f6\u5e93\uff1a<\/p>\n
\u56e0\u4e3a\u7a0b\u5e8f\u4e2d\u4f9d\u8d56\u4e86\u52a8\u6001\u7248\u672c\u7684\u8fd0\u884c\u65f6\u5e93\u548c MFC \u5e93\uff0c\u5728\u53d1\u5e03\u7a0b\u5e8f\u65f6\u8981\u5c06\u8fd9\u4e9b\u5e93\u5e26\u4e0a\u3002\u6709\u4e9b\u7cfb\u7edf\u4e2d\u6ca1\u6709\u8fd9\u4e9b\u5e93\uff0c\u7a0b\u5e8f\u542f\u52a8\u65f6\u5c31\u4f1a\u62a5\u627e\u4e0d\u5230\u5e93\uff0c\u5c31\u4f1a\u542f\u52a8\u5931\u8d25\u3002<\/p>\n
10\u3001\u5e94\u8be5\u4f7f\u7528\u6df1\u62f7\u8d1d\uff0c\u5374\u4f7f\u7528\u4e86\u6d45\u62f7\u8d1d<\/h3>\n
\u672c\u6765\u5e94\u8be5\u8981\u8fdb\u884c\u6df1\u62f7\u8d1d\u7684\uff0c\u5374\u4f7f\u7528\u4e86\u6d45\u62f7\u8d1d\uff08\u76f4\u63a5\u8d4b\u503c\uff09\uff0c\u5bfc\u81f4\u53e6\u4e2a\u4e0d\u540c\u751f\u547d\u5468\u671f\u7684 C++ \u5bf9\u8c61\u6307\u5411\u4e86\u540c\u4e00\u5757\u5185\u5b58\uff0c\u4e00\u4e2a\u5bf9\u8c61\u5c06\u5185\u5b58\u91ca\u653e\u540e\uff0c\u53e6\u4e00\u4e2a\u5bf9\u8c61\u518d\u7528\u5230\u8fd9\u5757\u5185\u5b58\uff0c\u5c31\u9020\u6210\u4e86\u5185\u5b58\u8bbf\u95ee\u8fdd\u4f8b\uff0c\u4ea7\u751f\u5f02\u5e38\u3002<\/p>\n
\u6709\u4e2a\u7ecf\u5178\u7684 C++ \u7b14\u8bd5\u9898\uff0c\u8ba9\u6211\u4eec\u5b9e\u73b0 String \u7c7b\u7684\u76f8\u5173\u51fd\u6570\uff0c\u5176\u4e3b\u8981\u76ee\u7684\u5c31\u662f\u7528\u6765\u8003\u5bdf\u5bf9\u6df1\u62f7\u8d1d\u4e0e\u6d45\u62f7\u8d1d\u7684\u7406\u89e3\u7684\u3002\u9898\u76ee\u4e2d\u7ed9\u51fa String\u7c7b\u7684\u58f0\u660e\uff1a<\/p>\n
class\u00a0String{
public:
\u00a0\u00a0\u00a0\u00a0String();
\u00a0\u00a0\u00a0\u00a0String(const\u00a0String\u00a0&\u00a0str);
\u00a0\u00a0\u00a0\u00a0String(const\u00a0char*\u00a0str);
\u00a0\u00a0\u00a0\u00a0String&\u00a0operator=(String\u00a0str);
\u00a0\u00a0\u00a0\u00a0char*\u00a0c_str()\u00a0const;
\u00a0\u00a0\u00a0\u00a0~String();
\u00a0\u00a0\u00a0\u00a0int\u00a0size()\u00a0const;
private:
\u00a0\u00a0\u00a0\u00a0char*\u00a0data;
};
<\/code><\/pre>\n
\u8ba9\u5199\u51fa\u4e0a\u8ff0\u51e0\u4e2a\u51fd\u6570\u7684\u5185\u90e8\u5b9e\u73b0\u3002\u8fd9\u4e9b\u51fd\u6570\u7684\u5b9e\u73b0\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
\/\/\u666e\u901a\u6784\u9020\u51fd\u6570\u00a0\u00a0
String::String(const\u00a0char\u00a0*str)
{
\u00a0\u00a0if<\/span>\u00a0(str\u00a0==\u00a0NULL)
\u00a0\u00a0{
\u00a0\u00a0\u00a0 m_data = new char[1];\/\/\u00a0\u5f97\u5206\u70b9\uff1a\u5bf9\u7a7a\u5b57\u7b26\u4e32\u81ea\u52a8\u7533\u8bf7\u5b58\u653e\u7ed3\u675f\u6807\u5fd7''<\/span>\u7684\uff0c\u52a0\u5206\u70b9\uff1a\u5bf9m_data\u52a0NULL\u5224\u65ad\u00a0\u00a0
\u00a0\u00a0\u00a0\u00a0*m_data\u00a0=\u00a0''<\/span>;
\u00a0\u00a0}
\u00a0\u00a0else<\/span>
\u00a0\u00a0{
\u00a0\u00a0\u00a0\u00a0int\u00a0length\u00a0=\u00a0strlen(str);
\u00a0\u00a0\u00a0\u00a0m_data\u00a0=\u00a0new\u00a0char[length\u00a0+\u00a01];\/\/\u00a0\u82e5\u80fd\u52a0\u00a0NULL\u00a0\u5224\u65ad\u5219\u66f4\u597d
\u00a0\u00a0\u00a0\u00a0strcpy(m_data,\u00a0str);
\u00a0\u00a0}
}
\u00a0
\u00a0
\/\/\u00a0String\u7684\u6790\u6784\u51fd\u6570\u00a0\u00a0
String::~String(void)
{
\u00a0\u00a0delete[]\u00a0m_data;\u00a0\/\/\u00a0\u6216delete\u00a0m_data;\u00a0\u00a0
}
\u00a0
\u00a0
\/\/\u62f7\u8d1d\u6784\u9020\u51fd\u6570\u00a0\u00a0
String::String(const String &other)\/\/\u00a0\u5f97\u5206\u70b9\uff1a\u8f93\u5165\u53c2\u6570\u4e3aconst\u578b\u00a0\u00a0
{\u00a0\u00a0\u00a0\u00a0\u00a0
\u00a0\u00a0int\u00a0length\u00a0=\u00a0strlen(other.m_data);
\u00a0\u00a0m_data\u00a0=\u00a0new\u00a0char[length\u00a0+\u00a01];\/\/\u00a0\u82e5\u80fd\u52a0\u00a0NULL\u00a0\u5224\u65ad\u5219\u66f4\u597d\u00a0\u00a0
\u00a0\u00a0strcpy(m_data,\u00a0other.m_data);
}
\u00a0
\u00a0
\/\/\u8d4b\u503c\u51fd\u6570\u00a0\u00a0
String & String::operator =\u00a0(const String &other)\u00a0\/\/\u00a0\u5f97\u5206\u70b9\uff1a\u8f93\u5165\u53c2\u6570\u4e3aconst\u578b\u00a0\u00a0
{
\u00a0\u00a0if<\/span>\u00a0(this ==\u00a0&other)\/\/\u5f97\u5206\u70b9\uff1a\u68c0\u67e5\u81ea\u8d4b\u503c\u00a0\u00a0
\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0*this;\u00a0
\u00a0\u00a0if<\/span>\u00a0(m_data)
\u00a0\u00a0\u00a0\u00a0\u00a0 delete[] m_data;\/\/\u5f97\u5206\u70b9\uff1a\u91ca\u653e\u539f\u6709\u7684\u5185\u5b58\u8d44\u6e90\u00a0\u00a0
\u00a0\u00a0int\u00a0length\u00a0=\u00a0strlen(other.m_data);
\u00a0 m_data = new char[length + 1];\/\/\u52a0\u5206\u70b9\uff1a\u5bf9m_data\u52a0NULL\u5224\u65ad\u00a0\u00a0
\u00a0\u00a0strcpy(m_data,\u00a0other.m_data);
\u00a0\u00a0return<\/span>\u00a0*this;\/\/\u5f97\u5206\u70b9\uff1a\u8fd4\u56de\u672c\u5bf9\u8c61\u7684\u5f15\u7528\u00a0\u00a0\u00a0\u00a0
}
<\/code><\/pre>\n
\u7b80\u5355\u5206\u4eab\u5feb\u4e50\u5b66\u4e60\uff0c\u5982\u6709\u9519\u8bef\u8bf7\u591a\u5305\u6db5\uff01<\/p>\n
<\/section>\n
PS\uff1a<\/span>\u6b22\u8fce\u5206\u4eab\uff0c\u70b9\u8d5e\uff0c\u5728\u770b\u3002<\/span><\/p>\n
\u00a0<\/p>\n<\/section>\n<\/div>\n\n\n
\u8f6c\u81ea\uff1ahttps:\/\/mp.weixin.qq.com\/s\/tUT9sDR-d1aTzWof3TCjNg<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6765\u6e90\uff1ahttps:\/\/blog.csdn.net\/chenlycly \u00a0 \u516c\u53f8\u6bcf\u5e74\u90fd\u4f1a\u6709\u4e00\u5b9a\u7684\u4eba\u5458\u6d41\u52a8\uff0c\u76f8\u5e94\u5730 … \u7ee7\u7eed\u9605\u8bfb\u201cC++\u7f16\u7a0b\u65b0\u624b\u5bb9\u6613\u72af\u7684 10 \u79cd\u7f16\u7a0b\u9519\u8bef\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[899],"_links":{"self":[{"href":"http:\/\/www.zhushiyao.com\/index.php?rest_route=\/wp\/v2\/posts\/99844"}],"collection":[{"href":"http:\/\/www.zhushiyao.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.zhushiyao.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.zhushiyao.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.zhushiyao.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=99844"}],"version-history":[{"count":2,"href":"http:\/\/www.zhushiyao.com\/index.php?rest_route=\/wp\/v2\/posts\/99844\/revisions"}],"predecessor-version":[{"id":99847,"href":"http:\/\/www.zhushiyao.com\/index.php?rest_route=\/wp\/v2\/posts\/99844\/revisions\/99847"}],"wp:attachment":[{"href":"http:\/\/www.zhushiyao.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=99844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.zhushiyao.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=99844"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.zhushiyao.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=99844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}