{"id":7296,"date":"2022-10-24T17:54:15","date_gmt":"2022-10-24T09:54:15","guid":{"rendered":"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296"},"modified":"2024-05-07T09:03:34","modified_gmt":"2024-05-07T01:03:34","slug":"c%e5%ad%97%e7%ac%a6%e4%b8%b2%e7%9a%84%e5%b8%b8%e8%a7%81%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296","title":{"rendered":"c++_\u5b57\u7b26\u4e32"},"content":{"rendered":"<p><a href=\"https:\/\/www.cnblogs.com\/bljw-02\/p\/16321600.html\">https:\/\/www.cnblogs.com\/bljw-02\/p\/16321600.html<\/a><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_16 counter-hierarchy counter-decimal ez-toc-grey\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">\u76ee\u5f55<\/p>\n<span class=\"ez-toc-title-toggle\"><a class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><i class=\"ez-toc-glyphicon ez-toc-icon-toggle\"><\/i><\/a><\/span><\/div>\n<nav><ul class=\"ez-toc-list ez-toc-list-level-1\"><ul class=\"ez-toc-list-level-3\"><li class=\"ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#%E5%AD%97%E7%AC%A6%E4%B8%B2%E9%95%BF%E5%BA%A6\" title=\"\u5b57\u7b26\u4e32\u957f\u5ea6\">\u5b57\u7b26\u4e32\u957f\u5ea6<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#string%E4%B8%8Echar%E7%9A%84%E5%8C%BA%E5%88%AB\" title=\"string\u4e0echar\u7684\u533a\u522b\">string\u4e0echar\u7684\u533a\u522b<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-3\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#%E5%AD%97%E7%AC%A6%E4%B8%B2%E8%BD%AC%E5%8C%96\" title=\"\u5b57\u7b26\u4e32\u8f6c\u5316\">\u5b57\u7b26\u4e32\u8f6c\u5316<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-4\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#%E5%AD%97%E7%AC%A6%E4%B8%B2%E6%AF%94%E8%BE%83\" title=\"\u5b57\u7b26\u4e32\u6bd4\u8f83\">\u5b57\u7b26\u4e32\u6bd4\u8f83<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-5\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#%E5%AD%97%E7%AC%A6%E4%B8%B2%E6%8B%BC%E6%8E%A5\" title=\"\u5b57\u7b26\u4e32\u62fc\u63a5\">\u5b57\u7b26\u4e32\u62fc\u63a5<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-6\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#%E5%AD%97%E7%AC%A6%E4%B8%B2%E5%88%87%E5%89%B2\" title=\"\u5b57\u7b26\u4e32\u5207\u5272\">\u5b57\u7b26\u4e32\u5207\u5272<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-7\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#%E5%AD%97%E7%AC%A6%E4%B8%B2%E7%9B%B8%E5%85%B3%E6%8A%A5%E9%94%99\" title=\"\u5b57\u7b26\u4e32\u76f8\u5173\u62a5\u9519\">\u5b57\u7b26\u4e32\u76f8\u5173\u62a5\u9519<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-8\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#C%E4%B8%ADinclude%E4%B8%8Einclude%E7%9A%84%E5%8C%BA%E5%88%AB\" title=\"C++\u4e2d#include\u4e0e#include\u7684\u533a\u522b\">C++\u4e2d#include\u4e0e#include\u7684\u533a\u522b<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-9\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#%E5%88%A4%E6%96%AD%E5%AD%97%E7%AC%A6%E4%B8%B2%E4%B8%AD%E6%98%AF%E5%90%A6%E5%8C%85%E5%90%AB%E6%9F%90%E4%B8%AA%E5%AD%97%E7%AC%A6\" title=\"\u5224\u65ad\u5b57\u7b26\u4e32\u4e2d\u662f\u5426\u5305\u542b\u67d0\u4e2a\u5b57\u7b26\">\u5224\u65ad\u5b57\u7b26\u4e32\u4e2d\u662f\u5426\u5305\u542b\u67d0\u4e2a\u5b57\u7b26<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-10\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#%E5%88%A4%E6%96%AD%E5%AD%97%E7%AC%A6%E4%B8%B2%E6%98%AF%E5%90%A6%E4%B8%BA%E7%A9%BA\" title=\"\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u7a7a\">\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u7a7a<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-11\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#%E5%AD%97%E7%AC%A6%E4%B8%B2%E8%BD%AC%E6%95%B0%E5%AD%97\" title=\"\u5b57\u7b26\u4e32\u8f6c\u6570\u5b57\">\u5b57\u7b26\u4e32\u8f6c\u6570\u5b57<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-12\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#%E5%9D%91%EF%BC%9A%E9%80%9A%E8%BF%87strcat%E5%BE%97%E5%88%B0%E7%9A%84%E5%AD%97%E7%AC%A6%E4%B8%B2%EF%BC%8C%E8%BD%AC%E6%8D%A2%E6%88%90%E6%95%B0%E5%AD%97%E5%8F%AF%E8%83%BD%E6%98%AF0%EF%BC%8C%E9%9C%80%E8%A6%81%E7%94%A8strcpy%E5%A4%8D%E5%88%B6%E4%B8%80%E4%B8%8B%E5%86%8D%E8%BD%AC%E3%80%82\" title=\"\u5751\uff1a\u901a\u8fc7strcat\u5f97\u5230\u7684\u5b57\u7b26\u4e32\uff0c\u8f6c\u6362\u6210\u6570\u5b57\u53ef\u80fd\u662f0\uff0c\u9700\u8981\u7528strcpy\u590d\u5236\u4e00\u4e0b\u518d\u8f6c\u3002\">\u5751\uff1a\u901a\u8fc7strcat\u5f97\u5230\u7684\u5b57\u7b26\u4e32\uff0c\u8f6c\u6362\u6210\u6570\u5b57\u53ef\u80fd\u662f0\uff0c\u9700\u8981\u7528strcpy\u590d\u5236\u4e00\u4e0b\u518d\u8f6c\u3002<\/a><ul class=\"ez-toc-list-level-3\"><li class=\"ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-13\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#%E5%AD%97%E7%AC%A6%E6%98%AF%E5%90%A6%E5%8F%AF%E6%89%93%E5%8D%B0\" title=\"\u5b57\u7b26\u662f\u5426\u53ef\u6253\u5370\">\u5b57\u7b26\u662f\u5426\u53ef\u6253\u5370<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-14\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=7296\/#%E6%B8%85%E9%99%A4%E7%A9%BA%E6%A0%BC\" title=\"\u6e05\u9664\u7a7a\u683c\">\u6e05\u9664\u7a7a\u683c<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AD%97%E7%AC%A6%E4%B8%B2%E9%95%BF%E5%BA%A6\"><\/span>\u5b57\u7b26\u4e32\u957f\u5ea6<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"https:\/\/blog.csdn.net\/Terminal_ve\/article\/details\/126512580\">https:\/\/blog.csdn.net\/Terminal_ve\/article\/details\/126512580<\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"string%E4%B8%8Echar%E7%9A%84%E5%8C%BA%E5%88%AB\"><\/span>string\u4e0echar\u7684\u533a\u522b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"https:\/\/blog.csdn.net\/qq_42127861\/article\/details\/120230040\">https:\/\/blog.csdn.net\/qq_42127861\/article\/details\/120230040<\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AD%97%E7%AC%A6%E4%B8%B2%E8%BD%AC%E5%8C%96\"><\/span>\u5b57\u7b26\u4e32\u8f6c\u5316<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<blockquote>\n<p>C++ String \u4e0e char* \u76f8\u4e92\u8f6c\u6362<\/p>\n<\/blockquote>\n<ul>\n<li>\n<p>string\u8f6cchar\u6570\u7ec4<\/p>\n<pre><code class=\"language-cpp\">char ch[20];\nstring s=&quot;123456&quot;;\nstrcpy(ch,s.c_str());<\/code><\/pre>\n<\/li>\n<li>\n<p>string\u8f6cchar*<br \/>\n<a href=\"https:\/\/blog.csdn.net\/weixin_46474546\/article\/details\/119542321\">https:\/\/blog.csdn.net\/weixin_46474546\/article\/details\/119542321<\/a><br \/>\n<a href=\"https:\/\/zhuanlan.zhihu.com\/p\/348899581\">https:\/\/zhuanlan.zhihu.com\/p\/348899581<\/a><br \/>\n\u901a\u8fc7data()\u6216\u8005c_str()\u65b9\u6cd5<\/p>\n<\/li>\n<li>\n<p>char[]\u8f6cstring<br \/>\n\u76f4\u63a5\u8f6c\u5373\u53ef<\/p>\n<pre><code class=\"language-cpp\">string charArrToStr(char charArr[]){\nstring ans = charArr;\nreturn ans;\n}<\/code><\/pre>\n<\/li>\n<\/ul>\n<p>\u6216\u8005\u901a\u8fc7string\u7684\u6784\u9020\u65b9\u6cd5\uff1a<a href=\"https:\/\/blog.csdn.net\/yueyaquanboy\/article\/details\/22909211\">https:\/\/blog.csdn.net\/yueyaquanboy\/article\/details\/22909211<\/a><\/p>\n<ul>\n<li>\n<p>\u5176\u5b83\u7c7b\u578b\u8f6cstring<br \/>\nc++11<\/p>\n<pre><code class=\"language-bash\">\/\/ #include &lt;string&gt;\nstring to_string(int _Val);<\/code><\/pre>\n<\/li>\n<li>\n<p>string16\u3001string8\u4e0echar*\u4e4b\u95f4\u7684\u8f6c\u6362<\/p>\n<\/li>\n<\/ul>\n<pre><code class=\"language-cpp\">1.String16\u8f6cconst char*\nString16 name16 = String16(&quot;Hello World&quot;);\nString8 name8 = String8(name16);\nconst char *buffer = name8.string();\n\n\u9a8c\u8bc1\uff1a\nprintf(&quot;buffer = %s\\n&quot;,buffer);\n\n\u6ce8\u610f\uff1a\nString16.string()\u5176\u5b9e\u662fconst char16_t\u7c7b\u578b\nString8.string()\u662fconst char*\u7c7b\u578b\n\u6240\u4ee5\u8f6c\u6362\u4e4b\u524d\u9700\u8981\u5c06String16\u8f6c\u6362\u6210const char*\u7c7b\u578b\n<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AD%97%E7%AC%A6%E4%B8%B2%E6%AF%94%E8%BE%83\"><\/span>\u5b57\u7b26\u4e32\u6bd4\u8f83<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u76f8\u7b49\uff1a<br \/>\nstrcmp<br \/>\n<a href=\"https:\/\/blog.csdn.net\/2301_76618602\/article\/details\/133135992\">https:\/\/blog.csdn.net\/2301_76618602\/article\/details\/133135992<\/a><br \/>\n\u6ce8\u610fstrcmp\u5982\u679c\u4e0e\u5b57\u7b26\u6bd4\u8f83\uff0c\u5b57\u7b26\u53ea\u80fd\u662f\u53cc\u5f15\u53f7\uff0c\u4e0d\u80fd\u4f7f\u7528\u5355\u5f15\u53f7\u3002<\/p>\n<\/li>\n<li>\n<p>\u7a7a\u5b57\u7b26\u4e32\u5224\u65ad<\/p>\n<ol>\n<li>\u4f7f\u7528string\u7c7b\u7684\u6210\u5458\u51fd\u6570empty()\uff0c\u5224\u65ad\u662f\u5426\u4e3a\u7a7a\uff1a\n<pre><code class=\"language-cpp\">string str;\nif(str.empty()){  \/\/ \u4e3a\u7a7a\u6210\u7acb\n...\n}<\/code><\/pre>\n<\/li>\n<li>\u4f7f\u7528size()\uff0c\u5224\u65ad\u5b57\u7b26\u4e32\u957f\u5ea6\uff0c\u5982\u679c\u4e3a0\uff0c\u5219\u4e3a\u7a7a\uff1a\n<pre><code class=\"language-cpp\">string str;\nif(str.size() == 0){   \/\/ \u4e3a\u7a7a\u6210\u7acb\n...\n}<\/code><\/pre>\n<\/li>\n<li>\u4e0e\u7a7a\u4e32&quot;&quot;\u6bd4\u8f83\uff0c\u76f8\u7b49\uff0c\u5219\u4e3a\u7a7a\uff1a\n<pre><code class=\"language-cpp\">string str;\nif(str == &quot;&quot;){   \/\/ \u4e3a\u7a7a\u6210\u7acb\n...\n}<\/code><\/pre>\n<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AD%97%E7%AC%A6%E4%B8%B2%E6%8B%BC%E6%8E%A5\"><\/span>\u5b57\u7b26\u4e32\u62fc\u63a5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>invalid operands of types \u2018const char [6]\u2018 and \u2018const char [6]\u2018 to binary \u2018operator+\u2018<br \/>\n<a href=\"https:\/\/blog.csdn.net\/xb_2015\/article\/details\/126791930\">https:\/\/blog.csdn.net\/xb_2015\/article\/details\/126791930<\/a><\/p>\n<\/li>\n<li>\n<p>sprintf<br \/>\nsprintf (res, &quot;%s%d&quot;, name, a)<\/p>\n<\/li>\n<\/ul>\n<p><strong>sprintf\u6709\u4e2a\u5751\u7239\u7684bug<\/strong>:\u610f\u5916\u7684\u5c06&quot;&gt;&quot;\u8f93\u51fa\u4e3a&quot;&lt;&quot;<br \/>\n\u5982\u679c<code>sprintf (cmd, &quot;&quot;ffmpeg_primary -re -stream_loop -1 -i  %s -acodec  pcm_s16be  -f rtsp -rtsp_transport udp rtsp:\/\/%s\/live\/%s &gt; \/dev\/null &amp;&quot;&quot;, videoFilePath.c_str(), bmcIp.c_str(),videoName.c_str());<\/code> \u5219cmd\u7ed3\u679c\u4e2d\u7684<code>&gt;<\/code>\u4f1a\u53d8\u4e3a<code>&lt;<\/code>,\u4f46\u662f\u5982\u679c\u628aformat\u53c2\u6570\u5b9a\u4e49\u6210\u4e00\u4e2a\u53d8\u91cf\u5219\u6b63\u5e38\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AD%97%E7%AC%A6%E4%B8%B2%E5%88%87%E5%89%B2\"><\/span>\u5b57\u7b26\u4e32\u5207\u5272<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"https:\/\/blog.csdn.net\/sinat_31608641\/article\/details\/121184945\">https:\/\/blog.csdn.net\/sinat_31608641\/article\/details\/121184945<\/a><\/p>\n<p>\u7528C\u8bed\u8a00\u4e2d\u7684strtok \u51fd\u6570\u6765\u8fdb\u884c\u5206\u5272\uff0c\u539f\u578b: char <em>strtok(char <\/em>str, const char *delim);strtok\u51fd\u6570\u5305\u542b\u5728\u5934\u6587\u4ef6<string.h>\u4e2d\uff0c\u5bf9\u4e8e\u5b57\u7b26\u6570\u7ec4\u53ef\u4ee5\u91c7\u7528\u8fd9\u79cd\u65b9\u6cd5\u5904\u7406\u3002<\/p>\n<pre><code class=\"language-bash\">#include &lt;string.h&gt;\n#include &lt;stdio.h&gt;\n\nint main(){\n    char s[] = &quot;a,b*c,d&quot;;\n    const char *sep = &quot;,*&quot;; \/\/\u53ef\u6309\u591a\u4e2a\u5b57\u7b26\u6765\u5206\u5272\n    char *p;\n    p = strtok(s, sep);  \/\/\u8fd4\u56de\u7b2c\u4e00\u4e2a\u5b50\u4e32\n    while(p){\n        printf(&quot;%s &quot;, p);\n        p = strtok(NULL, sep);  \/\/NULL\u8868\u793a\u63a5\u7740\u4e0a\u6b21\u5207\u5272\u4e86\u4e4b\u540e\u7684\u5b57\u7b26\u4e32\u5207\u5272\n    }\n    printf(&quot;\\n&quot;);\n    return 0;\n}\n\/\/\u8f93\u51fa: a b c d\n<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AD%97%E7%AC%A6%E4%B8%B2%E7%9B%B8%E5%85%B3%E6%8A%A5%E9%94%99\"><\/span>\u5b57\u7b26\u4e32\u76f8\u5173\u62a5\u9519<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\n<p>invalid conversion from \u2018const char<em>\u2019 to \u2018char<\/em>\u2019<br \/>\nstring\u7c7b\u7684c_str\u51fd\u6570\u8fd4\u56de\u7684\u662fconst char\u7c7b\u578b\uff0c\u5982\u679c\u5c06\u5b83\u7528\u4f5c\u5b9e\u53c2\u4f20\u9012\u7ed9char\u7684\u5f62\u53c2\u5c31\u4f1a\u62a5\u8fd9\u4e2a\u9519\u8bef<br \/>\n\u89e3\u51b3\u65b9\u6cd5\uff1a\u5728\u8c03\u7528\u662f\u52a0(char <em>)\u8f6c\u6362\u4e00\u4e0b\uff0c\u6bd4\u5982(char <\/em>)cfgfile.c_str()<\/p>\n<\/li>\n<li>\n<p>warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]<br \/>\n<a href=\"https:\/\/blog.csdn.net\/aa804738534\/article\/details\/114983672\">https:\/\/blog.csdn.net\/aa804738534\/article\/details\/114983672<\/a><\/p>\n<\/li>\n<\/ul>\n<p><code>char* p = &quot;abc&quot;;\u3000\u3000\/\/ valid in C, invalid in C++<\/code><\/p>\n<ul>\n<li><code>\u2018string\u2019 has not been declared<\/code><br \/>\n\u660e\u660e\u5df2\u7ecf<code>#include &lt;string&gt;<\/code>\uff0c\u4ecd\u7136\u62a5\u9519\uff0c\u662f\u56e0\u4e3a\u6ca1\u6709\u52a0std\u7684\u539f\u56e0\u3002<br \/>\n<a href=\"https:\/\/www.coder.work\/article\/120269\">https:\/\/www.coder.work\/article\/120269<\/a><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"C%E4%B8%ADinclude%E4%B8%8Einclude%E7%9A%84%E5%8C%BA%E5%88%AB\"><\/span>C++\u4e2d#include<string>\u4e0e#include<string.h>\u7684\u533a\u522b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"https:\/\/blog.csdn.net\/starboybenben\/article\/details\/49802555\">https:\/\/blog.csdn.net\/starboybenben\/article\/details\/49802555<\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%88%A4%E6%96%AD%E5%AD%97%E7%AC%A6%E4%B8%B2%E4%B8%AD%E6%98%AF%E5%90%A6%E5%8C%85%E5%90%AB%E6%9F%90%E4%B8%AA%E5%AD%97%E7%AC%A6\"><\/span>\u5224\u65ad\u5b57\u7b26\u4e32\u4e2d\u662f\u5426\u5305\u542b\u67d0\u4e2a\u5b57\u7b26<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"https:\/\/www.cnblogs.com\/ruingking\/p\/13463035.html?ivk_sa=1024320u\">https:\/\/www.cnblogs.com\/ruingking\/p\/13463035.html?ivk_sa=1024320u<\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%88%A4%E6%96%AD%E5%AD%97%E7%AC%A6%E4%B8%B2%E6%98%AF%E5%90%A6%E4%B8%BA%E7%A9%BA\"><\/span>\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u7a7a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<pre><code class=\"language-c\">char* p = &quot;123456&quot;;\nif(p != nullptr &amp;&amp; p[0] == &#039;\\0&#039;)\n{\n    \/\/\u4e3a\u7a7a\n}\nelse if(p == nullptr)\n{\n\n}\nelse\n{\n    \/\/\u4e0d\u4e3a\u7a7a\n}<\/code><\/pre>\n<p>\u5bf9\u4e8estring\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u51fd\u6570\u5224\u65ad\u3002<br \/>\n<a href=\"https:\/\/blog.csdn.net\/Xuebing_han\/article\/details\/78143560\">https:\/\/blog.csdn.net\/Xuebing_han\/article\/details\/78143560<\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AD%97%E7%AC%A6%E4%B8%B2%E8%BD%AC%E6%95%B0%E5%AD%97\"><\/span>\u5b57\u7b26\u4e32\u8f6c\u6570\u5b57<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"https:\/\/blog.csdn.net\/xiaowang_lj\/article\/details\/125333628\">https:\/\/blog.csdn.net\/xiaowang_lj\/article\/details\/125333628<\/a><br \/>\n<a href=\"https:\/\/blog.csdn.net\/zhangqianqian57\/article\/details\/117251129\">https:\/\/blog.csdn.net\/zhangqianqian57\/article\/details\/117251129<\/a><br \/>\natoi\u6216\u8005stoi<\/p>\n<p><a href=\"https:\/\/blog.csdn.net\/szlcw1\/article\/details\/44981377\">https:\/\/blog.csdn.net\/szlcw1\/article\/details\/44981377<\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%9D%91%EF%BC%9A%E9%80%9A%E8%BF%87strcat%E5%BE%97%E5%88%B0%E7%9A%84%E5%AD%97%E7%AC%A6%E4%B8%B2%EF%BC%8C%E8%BD%AC%E6%8D%A2%E6%88%90%E6%95%B0%E5%AD%97%E5%8F%AF%E8%83%BD%E6%98%AF0%EF%BC%8C%E9%9C%80%E8%A6%81%E7%94%A8strcpy%E5%A4%8D%E5%88%B6%E4%B8%80%E4%B8%8B%E5%86%8D%E8%BD%AC%E3%80%82\"><\/span>\u5751\uff1a\u901a\u8fc7strcat\u5f97\u5230\u7684\u5b57\u7b26\u4e32\uff0c\u8f6c\u6362\u6210\u6570\u5b57\u53ef\u80fd\u662f0\uff0c\u9700\u8981\u7528strcpy\u590d\u5236\u4e00\u4e0b\u518d\u8f6c\u3002<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AD%97%E7%AC%A6%E6%98%AF%E5%90%A6%E5%8F%AF%E6%89%93%E5%8D%B0\"><\/span>\u5b57\u7b26\u662f\u5426\u53ef\u6253\u5370<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><code>std::isprint<\/code><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E6%B8%85%E9%99%A4%E7%A9%BA%E6%A0%BC\"><\/span>\u6e05\u9664\u7a7a\u683c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"https:\/\/blog.csdn.net\/sinat_31608641\/article\/details\/112392062\">https:\/\/blog.csdn.net\/sinat_31608641\/article\/details\/112392062<\/a><\/p>\n<ul>\n<li>\u53bb\u9664\u524d\u540e\u7a7a\u683c\n<pre><code class=\"language-cpp\">string word = &quot;  sshah hha    &quot;;\nstd::string::iterator end_pos = std::remove(word.begin(), word.end(), &#039; &#039;);\nword.erase(end_pos, word.end());\/\/\u79fb\u9664\u7a7a\u683c\ncout &lt;&lt; word &lt;&lt; endl;<\/code><\/pre>\n<\/li>\n<\/ul>\n<button class=\"simplefavorite-button\" data-postid=\"7296\" data-siteid=\"1\" data-groupid=\"1\" data-favoritecount=\"0\" style=\"\">\u6536\u85cf <i class=\"sf-icon-star-empty\"><\/i><\/button>","protected":false},"excerpt":{"rendered":"<p>https:\/\/www.cnblogs.com\/bljw-02\/p\/16321600.html \u76ee\u5f55 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[502],"tags":[],"_links":{"self":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/7296"}],"collection":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7296"}],"version-history":[{"count":33,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/7296\/revisions"}],"predecessor-version":[{"id":13230,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/7296\/revisions\/13230"}],"wp:attachment":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7296"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7296"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}