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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>rindex</title></head><body bgcolor="white"><script type="text/javascript" language="JavaScript" src="../jscript/codes.js"></script><basefont size="3"> <a name="rindex"></a> <a name="tag_03_611"></a><!-- rindex --> <!--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_03_611_01"></a>NAME</h4><blockquote>rindex - character string operations (<b>LEGACY</b>)</blockquote><h4><a name="tag_03_611_02"></a>SYNOPSIS</h4><blockquote class="synopsis"><div class="box"><code><tt><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border="0"> #include <<a href="../basedefs/strings.h.html">strings.h</a>><br><br> char *rindex(const char *</tt><i>s</i><tt>, int</tt> <i>c</i><tt>); <img src="../images/opt-end.gif" alt="[Option End]" border="0"></tt></code></div><tt><br></tt></blockquote><h4><a name="tag_03_611_03"></a>DESCRIPTION</h4><blockquote><p>The <i>rindex</i>() function shall be equivalent to <a href="strrchr.html"><i>strrchr</i>()</a> .</p></blockquote><h4><a name="tag_03_611_04"></a>RETURN VALUE</h4><blockquote><p>Refer to <a href="strrchr.html"><i>strrchr</i>()</a> .</p></blockquote><h4><a name="tag_03_611_05"></a>ERRORS</h4><blockquote><p>Refer to <a href="strrchr.html"><i>strrchr</i>()</a> .</p></blockquote><hr><div class="box"><em>The following sections are informative.</em></div><h4><a name="tag_03_611_06"></a>EXAMPLES</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_611_07"></a>APPLICATION USAGE</h4><blockquote><p>The <a href="../functions/strrchr.html"><i>strrchr</i>()</a> function is preferred over this function.</p><p>For maximum portability, it is recommended to replace the function call to <i>rindex</i>() as follows:</p><pre><tt>#define rindex(a,b) strrchr((a),(b))</tt></pre></blockquote><h4><a name="tag_03_611_08"></a>RATIONALE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_611_09"></a>FUTURE DIRECTIONS</h4><blockquote><p>This function may be withdrawn in a future version.</p></blockquote><h4><a name="tag_03_611_10"></a>SEE ALSO</h4><blockquote><p><a href="strrchr.html"><i>strrchr</i>()</a> , the Base Definitions volume of IEEE Std 1003.1-2001, <a href="../basedefs/strings.h.html"><i><strings.h></i></a></p></blockquote><h4><a name="tag_03_611_11"></a>CHANGE HISTORY</h4><blockquote><p>First released in Issue 4, Version 2.</p></blockquote><h4><a name="tag_03_611_12"></a>Issue 5</h4><blockquote><p>Moved from X/OPEN UNIX extension to BASE.</p></blockquote><h4><a name="tag_03_611_13"></a>Issue 6</h4><blockquote><p>This function is 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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