Files
hustoj/web/cppreference-zh/chmhelp/cpp-header-cstring.html
2025-08-01 12:57:54 +08:00

291 lines
12 KiB
HTML

<!DOCTYPE html>
<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
<head><meta http-equiv="x-ua-compatible" content="ie=edge">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>&#26631;&#20934;&#24211;&#22836;&#25991;&#20214; &lt;cstring&gt;</title>
<link rel="stylesheet" href="ext.css" />
<link rel="stylesheet" href="site_modules.css" />
</head>
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_header_cstring skin-cppreference2 action-view cpp-navbar">
<div id="cpp-content-base">
<div id="content"><a id="top"></a>
<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">&#26631;&#20934;&#24211;&#22836;&#25991;&#20214;</span> &lt;cstring&gt;</h1>
<div id="bodyContent">
<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-header.html">header</a></span></div>
<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
<p>&#27492;&#22836;&#25991;&#20214;&#21407;&#20316;&#20026; <code><b>&lt;string.h&gt;</b></code> &#23384;&#22312;&#20110; C &#26631;&#20934;&#24211;&#12290;</p>
<p>&#27492;&#22836;&#25991;&#20214;&#29992;&#20110; <a href="cpp-string-byte.html">C &#39118;&#26684;&#31354;&#32456;&#27490;&#23383;&#33410;&#23383;&#31526;&#20018;</a>&#12290;</p>
<h3><span class="mw-headline" id=".E5.AE.8F">&#23439;</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-types-NULL.html"><span class="t-lines"><span>NULL</span></span></a></div>
</div>
</td>
<td>&#23454;&#29616;&#23450;&#20041;&#30340;&#31354;&#25351;&#38024;&#24120;&#37327;<br />
<span class="t-mark">(&#23439;&#24120;&#37327;)</span></td>
</tr>
</table>
<h3><span class="mw-headline" id=".E7.B1.BB.E5.9E.8B">&#31867;&#22411;</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-types-size_t.html"><span class="t-lines"><span>size_t</span></span></a></div>
</div>
</td>
<td><a href="cpp-language-sizeof.html"><tt>sizeof</tt></a> &#36816;&#31639;&#31526;&#36820;&#22238;&#30340;&#26080;&#31526;&#21495;&#25972;&#25968;&#31867;&#22411;<br />
<span class="t-mark">(typedef)</span></td>
</tr>
</table>
<h3><span class="mw-headline" id=".E5.87.BD.E6.95.B0">&#20989;&#25968;</span></h3>
<table class="t-dsc-begin">
<tr>
<td colspan="2">
<h5><span class="mw-headline" id=".E5.AD.97.E7.AC.A6.E4.B8.B2.E6.93.8D.E7.BA.B5">&#23383;&#31526;&#20018;&#25805;&#32437;</span></h5>
</td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strcpy.html"><span class="t-lines"><span>strcpy</span></span></a></div>
</div>
</td>
<td>&#22797;&#21046;&#19968;&#20010;&#23383;&#31526;&#20018;&#32473;&#21478;&#19968;&#20010;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strncpy.html"><span class="t-lines"><span>strncpy</span></span></a></div>
</div>
</td>
<td>&#22797;&#21046;&#26469;&#33258;&#19968;&#20010;&#23383;&#31526;&#20018;&#30340;&#19968;&#23450;&#37327;&#23383;&#31526;&#32473;&#21478;&#19968;&#20010;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strcat.html"><span class="t-lines"><span>strcat</span></span></a></div>
</div>
</td>
<td>&#36830;&#25509;&#20004;&#20010;&#23383;&#31526;&#20018;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strncat.html"><span class="t-lines"><span>strncat</span></span></a></div>
</div>
</td>
<td>&#36830;&#25509;&#20004;&#20010;&#23383;&#31526;&#20018;&#30340;&#19968;&#23450;&#37327;&#23383;&#31526;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strxfrm.html"><span class="t-lines"><span>strxfrm</span></span></a></div>
</div>
</td>
<td>&#21464;&#25442;&#23383;&#31526;&#20018;&#65292;&#20351;&#24471; strcmp &#20250;&#36820;&#22238;&#19982; strcoll &#30456;&#21516;&#30340;&#32467;&#26524;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr>
<td colspan="2">
<h5><span class="mw-headline" id=".E5.AD.97.E7.AC.A6.E4.B8.B2.E6.A3.80.E9.AA.8C">&#23383;&#31526;&#20018;&#26816;&#39564;</span></h5>
</td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strlen.html"><span class="t-lines"><span>strlen</span></span></a></div>
</div>
</td>
<td>&#36820;&#22238;&#32473;&#23450;&#23383;&#31526;&#20018;&#30340;&#38271;&#24230;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strcmp.html"><span class="t-lines"><span>strcmp</span></span></a></div>
</div>
</td>
<td>&#27604;&#36739;&#20004;&#20010;&#23383;&#31526;&#20018;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strncmp.html"><span class="t-lines"><span>strncmp</span></span></a></div>
</div>
</td>
<td>&#27604;&#36739;&#20004;&#20010;&#23383;&#31526;&#20018;&#30340;&#19968;&#23450;&#37327;&#23383;&#31526;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strcoll.html"><span class="t-lines"><span>strcoll</span></span></a></div>
</div>
</td>
<td>&#25353;&#29031;&#24403;&#21069;&#26412;&#22320;&#29615;&#22659;&#27604;&#36739;&#20004;&#20010;&#23383;&#31526;&#20018;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strchr.html"><span class="t-lines"><span>strchr</span></span></a></div>
</div>
</td>
<td>&#23547;&#25214;&#23383;&#31526;&#30340;&#39318;&#27425;&#20986;&#29616;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strrchr.html"><span class="t-lines"><span>strrchr</span></span></a></div>
</div>
</td>
<td>&#23547;&#25214;&#23383;&#31526;&#30340;&#26368;&#21518;&#20986;&#29616;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strspn.html"><span class="t-lines"><span>strspn</span></span></a></div>
</div>
</td>
<td>&#36820;&#22238;&#20165;&#30001;&#21478;&#19968;&#23383;&#33410;&#23383;&#31526;&#20018;&#20013;&#25214;&#21040;&#30340;&#23383;&#31526;&#32452;&#25104;&#30340;&#26368;&#22823;&#36215;&#22987;&#27573;&#30340;&#38271;&#24230;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strcspn.html"><span class="t-lines"><span>strcspn</span></span></a></div>
</div>
</td>
<td>&#36820;&#22238;&#20165;&#30001;&#21478;&#19968;&#23383;&#33410;&#23383;&#31526;&#20018;&#20013;&#25214;&#19981;&#21040;&#30340;&#23383;&#31526;&#32452;&#25104;&#30340;&#26368;&#22823;&#36215;&#22987;&#27573;&#30340;&#38271;&#24230;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strpbrk.html"><span class="t-lines"><span>strpbrk</span></span></a></div>
</div>
</td>
<td>&#23547;&#25214;&#20219;&#20309;&#26469;&#33258;&#20998;&#38548;&#31526;&#38598;&#21512;&#30340;&#23383;&#31526;&#30340;&#39318;&#20010;&#20301;&#32622;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strstr.html"><span class="t-lines"><span>strstr</span></span></a></div>
</div>
</td>
<td>&#23547;&#25214;&#23383;&#31526;&#23376;&#20018;&#30340;&#39318;&#27425;&#20986;&#29616;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strtok.html"><span class="t-lines"><span>strtok</span></span></a></div>
</div>
</td>
<td>&#23547;&#25214;&#23383;&#33410;&#23383;&#31526;&#20018;&#20013;&#30340;&#19979;&#20010;&#35760;&#21495;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr>
<td colspan="2">
<h5><span class="mw-headline" id=".E5.AD.97.E7.AC.A6.E6.95.B0.E7.BB.84.E6.93.8D.E7.BA.B5">&#23383;&#31526;&#25968;&#32452;&#25805;&#32437;</span></h5>
</td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-memchr.html"><span class="t-lines"><span>memchr</span></span></a></div>
</div>
</td>
<td>&#22312;&#25968;&#32452;&#20013;&#25628;&#32034;&#23383;&#31526;&#30340;&#39318;&#27425;&#20986;&#29616;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-memcmp.html"><span class="t-lines"><span>memcmp</span></span></a></div>
</div>
</td>
<td>&#27604;&#36739;&#20004;&#20010;&#32531;&#20914;&#21306;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-memset.html"><span class="t-lines"><span>memset</span></span></a></div>
</div>
</td>
<td>&#20197;&#19968;&#20010;&#23383;&#31526;&#22635;&#20805;&#32531;&#20914;&#21306;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-memcpy.html"><span class="t-lines"><span>memcpy</span></span></a></div>
</div>
</td>
<td>&#22797;&#21046;&#19968;&#20010;&#32531;&#20914;&#21306;&#21040;&#21478;&#19968;&#20010;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-memmove.html"><span class="t-lines"><span>memmove</span></span></a></div>
</div>
</td>
<td>&#31227;&#21160;&#19968;&#20010;&#32531;&#20914;&#21306;&#21040;&#21478;&#19968;&#20010;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr>
<td colspan="2">
<h5><span class="mw-headline" id=".E6.9D.82.E9.A1.B9">&#26434;&#39033;</span></h5>
</td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-string-byte-strerror.html"><span class="t-lines"><span>strerror</span></span></a></div>
</div>
</td>
<td>&#36820;&#22238;&#32473;&#23450;&#38169;&#35823;&#30721;&#30340;&#25991;&#26412;&#29256;&#26412;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
</table>
<h3><span class="mw-headline" id=".E6.B3.A8.E6.84.8F">&#27880;&#24847;</span></h3>
<ul>
<li><span class="t-lc"><a href="cpp-types-NULL.html">NULL</a></span> &#20134;&#23450;&#20041;&#20110;&#19979;&#21015;&#22836;&#25991;&#20214;&#65306;
<ul>
<li><a href="cpp-header-clocale.html"><tt>&lt;clocale&gt;</tt></a></li>
<li><a href="cpp-header-ctime.html"><tt>&lt;ctime&gt;</tt></a></li>
<li><a href="cpp-header-cstddef.html"><tt>&lt;cstddef&gt;</tt></a></li>
<li><a href="cpp-header-cstdio.html"><tt>&lt;cstdio&gt;</tt></a></li>
<li><a href="cpp-header-cwchar.html"><tt>&lt;cwchar&gt;</tt></a></li>
</ul>
</li>
<li><span class="t-lc"><a href="cpp-types-size_t.html">std::size_t</a></span> &#20134;&#23450;&#20041;&#20110;&#19979;&#21015;&#22836;&#25991;&#20214;&#65306;
<ul>
<li><a href="cpp-header-ctime.html"><tt>&lt;ctime&gt;</tt></a></li>
<li><a href="cpp-header-cstddef.html"><tt>&lt;cstddef&gt;</tt></a></li>
<li><a href="cpp-header-cstdio.html"><tt>&lt;cstdio&gt;</tt></a></li>
<li><a href="cpp-header-cuchar.html"><tt>&lt;cuchar&gt;</tt></a> <span class="t-mark-rev t-since-cxx17">(C++17 &#36215;)</span></li>
<li><a href="cpp-header-cwchar.html"><tt>&lt;cwchar&gt;</tt></a></li>
</ul>
</li>
</ul>
</div>
<div class="visualClear"></div>
</div>
</div>
</div>
</body>
</html>