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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta name="generator" content="HTML Tidy, see www.w3.org"><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><link type="text/css" rel="stylesheet" href="style.css"><!-- Generated by The Open Group's rhtm tool v1.2.1 --><!-- Copyright (c) 2001-2003 The Open Group, All Rights Reserved --><title><strings.h></title></head><body bgcolor="white"><script type="text/javascript" language="JavaScript" src="../jscript/codes.js"></script><basefont size="3"> <a name="<strings.h>"></a> <a name="tag_13_52"></a><!-- <strings.h> --> <!--header start--><center><font size="2">The Open Group Base Specifications Issue 6<br>IEEE Std 1003.1, 2003 Edition<br>Copyright © 2001-2003 The IEEE and The Open Group, All Rights reserved.</font></center><!--header end--><hr size="2" noshade><h4><a name="tag_13_52_01"></a>NAME</h4><blockquote>strings.h - string operations</blockquote><h4><a name="tag_13_52_02"></a>SYNOPSIS</h4><blockquote class="synopsis"><div class="box"><tt><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border="0"> #include <strings.h> <img src="../images/opt-end.gif" alt="[Option End]" border="0"></tt></div></blockquote><h4><a name="tag_13_52_03"></a>DESCRIPTION</h4><blockquote><p>The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.</p><pre><tt>int bcmp(const void *, const void *, size_t); (</tt><b>LEGACY</b> <tt>)void bcopy(const void *, void *, size_t); (</tt><b>LEGACY</b> <tt>)void bzero(void *, size_t); (</tt><b>LEGACY</b> <tt>)int ffs(int);char *index(const char *, int); (</tt><b>LEGACY</b> <tt>)char *rindex(const char *, int); (</tt><b>LEGACY</b> <tt>)int strcasecmp(const char *, const char *);int strncasecmp(const char *, const char *, size_t);</tt></pre><p>The <b>size_t</b> type shall be defined through <b>typedef</b> as described in <a href="stddef.h.html"><i><stddef.h></i></a> .</p></blockquote><hr><div class="box"><em>The following sections are informative.</em></div><h4><a name="tag_13_52_04"></a>APPLICATION USAGE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_13_52_05"></a>RATIONALE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_13_52_06"></a>FUTURE DIRECTIONS</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_13_52_07"></a>SEE ALSO</h4><blockquote><p><a href="stddef.h.html"><i><stddef.h></i></a> , the System Interfaces volume of IEEE Std 1003.1-2001, <a href="../functions/ffs.html"><i>ffs</i>()</a>, <a href="../functions/strcasecmp.html"><i>strcasecmp</i>()</a>, <a href="../functions/strncasecmp.html"><i>strncasecmp</i>()</a></p></blockquote><h4><a name="tag_13_52_08"></a>CHANGE HISTORY</h4><blockquote><p>First released in Issue 4, Version 2.</p></blockquote><h4><a name="tag_13_52_09"></a>Issue 6</h4><blockquote><p>The Open Group Corrigendum U021/2 is applied, correcting the prototype for <a href="../functions/index.html"><i>index</i>()</a>to be consistent with the reference page.</p><p>The <a href="../functions/bcmp.html"><i>bcmp</i>()</a>, <a href="../functions/bcopy.html"><i>bcopy</i>()</a>, <a href="../functions/bzero.html"><i>bzero</i>()</a>, <a href="../functions/index.html"><i>index</i>()</a>, and <a href="../functions/rindex.html"><i>rindex</i>()</a> functions are marked LEGACY.</p></blockquote><div class="box"><em>End of informative text.</em></div><hr><hr size="2" noshade><center><font size="2"><!--footer start-->UNIX ® is a registered Trademark of The Open Group.<br>POSIX ® is a registered Trademark of The IEEE.<br>[ <a href="../mindex.html">Main Index</a> | <a href="../basedefs/contents.html">XBD</a> | <a href="../utilities/contents.html">XCU</a> | <a href="../functions/contents.html">XSH</a> | <a href="../xrat/contents.html">XRAT</a>]</font></center><!--footer end--><hr size="2" noshade></body></html>⌨️ 快捷键说明
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