{"id":30,"date":"2009-03-22T16:36:26","date_gmt":"2009-03-22T08:36:26","guid":{"rendered":"http:\/\/www.genepeng.com\/?p=30"},"modified":"2009-03-22T16:55:43","modified_gmt":"2009-03-22T08:55:43","slug":"%e5%86%85%e5%ad%98%e5%88%86%e9%85%8d%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.genepeng.com\/index.php\/30","title":{"rendered":"\u5185\u5b58\u5206\u914d\u65b9\u5f0f"},"content":{"rendered":"

\u5185\u5b58\u5206\u914d\u65b9\u5f0f\u6709\u4e09\u79cd\uff1a
\n\uff081\uff09 \u4ece\u9759\u6001\u5b58\u50a8\u533a\u57df\u5206\u914d\u3002\u5185\u5b58\u5728\u7a0b\u5e8f\u7f16\u8bd1\u7684\u65f6\u5019\u5c31\u5df2\u7ecf\u5206\u914d\u597d\uff0c\u8fd9\u5757\u5185\u5b58\u5728\u7a0b\u5e8f\u7684\u6574\u4e2a\u8fd0\u884c\u671f\u95f4\u90fd\u5b58\u5728\u3002\u4f8b\u5982\u5168\u5c40\u53d8\u91cf\uff0cstatic \u53d8\u91cf\u3002
\n\uff082\uff09 \u5728\u6808\u4e0a\u521b\u5efa\u3002\u5728\u6267\u884c\u51fd\u6570\u65f6\uff0c\u51fd\u6570\u5185\u5c40\u90e8\u53d8\u91cf\u7684\u5b58\u50a8\u5355\u5143\u90fd\u53ef\u4ee5\u5728\u6808\u4e0a\u521b\u5efa\uff0c\u51fd\u6570\u6267\u884c\u7ed3\u675f\u65f6\u8fd9\u4e9b\u5b58\u50a8\u5355\u5143\u81ea\u52a8\u88ab\u91ca\u653e\u3002\u6808\u5185\u5b58\u5206\u914d\u8fd0\u7b97\u5185\u7f6e\u4e8e\u5904\u7406\u5668\u7684\u6307\u4ee4\u96c6\u4e2d\uff0c\u6548\u7387\u5f88\u9ad8\uff0c\u4f46\u662f\u5206\u914d\u7684\u5185\u5b58\u5bb9\u91cf\u6709\u9650\u3002(\u4e0d\u8981\u7528return \u8bed\u53e5\u8fd4\u56de\u6307\u5411\u201c\u6808\u5185\u5b58\u201d\u7684\u6307\u9488\uff0c\u56e0\u4e3a\u8be5\u5185\u5b58\u5728\u51fd\u6570\u7ed3\u675f\u65f6\u81ea\u52a8\u6d88\u4ea1)<\/span><\/p>\n

char *GetString(void)
\n{
\nchar p[] = “hello world”;
\nreturn p; \/\/ \u7f16\u8bd1\u5668\u5c06\u63d0\u51fa\u8b66\u544a
\n}<\/span><\/p>\n

void Test4(void)
\n{
\nchar *str = NULL;
\nstr = GetString(); \/\/ str \u7684\u5185\u5bb9\u662f\u5783\u573e
\ncout<< str << endl;
\n}<\/span><\/p>\n

\u4e0b\u9762\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff1a<\/span><\/span><\/p>\n

char *GetString2(void)
\n{
\nchar *p = “hello world”;
\nreturn p;
\n}
\nvoid Test5(void)
\n{
\nchar *str = NULL;
\nstr = GetString2();
\ncout<< str << endl;
\n}<\/span><\/span><\/span><\/p>\n

\u4f46\u8fd9\u79cd\u8bbe\u8ba1\u6982\u5ff5\u5374\u662f\u9519\u8bef\u7684\u3002\u56e0\u4e3aGetString2 \u5185\u7684\u201chello world\u201d\u662f\u5e38\u91cf\u5b57\u7b26\u4e32\uff0c\u4f4d\u4e8e\u9759\u6001\u5b58\u50a8\u533a\uff0c\u5b83\u5728\u7a0b\u5e8f\u751f\u547d\u671f\u5185\u6052\u5b9a\u4e0d\u53d8\u3002\u65e0\u8bba\u4ec0\u4e48\u65f6\u5019\u8c03\u7528GetString2\uff0c\u5b83\u8fd4\u56de\u7684\u59cb\u7ec8\u662f\u540c\u4e00\u4e2a\u201c\u53ea\u8bfb\u201d\u7684\u5185\u5b58\u5757\u3002<\/span>
\n<\/span>\uff083\uff09 \u4ece\u5806\u4e0a\u5206\u914d\uff0c\u4ea6\u79f0\u52a8\u6001\u5185\u5b58\u5206\u914d\u3002\u7a0b\u5e8f\u5728\u8fd0\u884c\u7684\u65f6\u5019\u7528malloc \u6216new \u7533\u8bf7\u4efb\u610f\u591a\u5c11\u7684\u5185\u5b58\uff0c\u7a0b\u5e8f\u5458\u81ea\u5df1\u8d1f\u8d23\u5728\u4f55\u65f6\u7528free \u6216delete \u91ca\u653e\u5185\u5b58\u3002\u52a8\u6001\u5185\u5b58\u7684\u751f\u5b58\u671f\u7531\u6211\u4eec\u51b3\u5b9a\uff0c\u4f7f\u7528\u975e\u5e38\u7075\u6d3b\uff0c\u4f46\u95ee\u9898\u4e5f\u6700\u591a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5185\u5b58\u5206\u914d\u65b9\u5f0f\u6709\u4e09\u79cd\uff1a \uff081\uff09 \u4ece\u9759\u6001\u5b58\u50a8\u533a\u57df\u5206\u914d\u3002\u5185\u5b58\u5728\u7a0b\u5e8f\u7f16\u8bd1\u7684\u65f6\u5019\u5c31\u5df2\u7ecf\u5206\u914d\u597d\uff0c\u8fd9\u5757\u5185\u5b58\u5728\u7a0b\u5e8f\u7684\u6574\u4e2a\u8fd0\u884c\u671f\u95f4\u90fd\u5b58\u5728\u3002\u4f8b\u5982\u5168\u5c40\u53d8\u91cf\uff0cstatic \u53d8\u91cf\u3002 \uff082\uff09 \u5728\u6808\u4e0a\u521b\u5efa\u3002\u5728\u6267\u884c\u51fd\u6570\u65f6\uff0c\u51fd\u6570\u5185\u5c40\u90e8\u53d8\u91cf\u7684\u5b58\u50a8\u5355\u5143\u90fd\u53ef\u4ee5\u5728\u6808\u4e0a\u521b\u5efa\uff0c\u51fd\u6570\u6267\u884c\u7ed3\u675f\u65f6\u8fd9\u4e9b\u5b58\u50a8\u5355\u5143\u81ea\u52a8\u88ab\u91ca\u653e\u3002\u6808\u5185\u5b58\u5206\u914d\u8fd0\u7b97\u5185\u7f6e\u4e8e\u5904\u7406\u5668\u7684\u6307\u4ee4\u96c6\u4e2d\uff0c\u6548\u7387\u5f88\u9ad8\uff0c\u4f46\u662f\u5206\u914d\u7684\u5185\u5b58\u5bb9\u91cf\u6709\u9650\u3002(\u4e0d\u8981\u7528return \u8bed\u53e5\u8fd4\u56de\u6307\u5411\u201c\u6808\u5185\u5b58\u201d\u7684\u6307\u9488\uff0c\u56e0\u4e3a\u8be5\u5185\u5b58\u5728\u51fd\u6570\u7ed3\u675f\u65f6\u81ea\u52a8\u6d88\u4ea1) char *GetString(void) { char p[] = “hello world”; return p; \/\/ \u7f16\u8bd1\u5668\u5c06\u63d0\u51fa\u8b66\u544a } void Test4(void) { char *str = NULL; str = GetString(); \/\/ str \u7684\u5185\u5bb9\u662f\u5783\u573e cout<< str << endl; } \u4e0b\u9762\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff1a char *GetString2(void) { char *p = “hello world”; return p; } void Test5(void) { char *str … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5,3],"tags":[23],"_links":{"self":[{"href":"https:\/\/www.genepeng.com\/index.php\/wp-json\/wp\/v2\/posts\/30"}],"collection":[{"href":"https:\/\/www.genepeng.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.genepeng.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.genepeng.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.genepeng.com\/index.php\/wp-json\/wp\/v2\/comments?post=30"}],"version-history":[{"count":11,"href":"https:\/\/www.genepeng.com\/index.php\/wp-json\/wp\/v2\/posts\/30\/revisions"}],"predecessor-version":[{"id":41,"href":"https:\/\/www.genepeng.com\/index.php\/wp-json\/wp\/v2\/posts\/30\/revisions\/41"}],"wp:attachment":[{"href":"https:\/\/www.genepeng.com\/index.php\/wp-json\/wp\/v2\/media?parent=30"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.genepeng.com\/index.php\/wp-json\/wp\/v2\/categories?post=30"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.genepeng.com\/index.php\/wp-json\/wp\/v2\/tags?post=30"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}