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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) 2001-2004 IEEE and The Open Group, All Rights Reserved --><title>wcsftime</title></head><body bgcolor="white"><script type="text/javascript" language="JavaScript" src="../jscript/codes.js"></script><basefont size="3"> <a name="wcsftime"></a> <a name="tag_03_832"></a><!-- wcsftime --> <!--header start--><center><font size="2">The Open Group Base Specifications Issue 6<br>IEEE Std 1003.1, 2004 Edition<br>Copyright © 2001-2004 The IEEE and The Open Group, All Rights reserved.</font></center><!--header end--><hr size="2" noshade><h4><a name="tag_03_832_01"></a>NAME</h4><blockquote>wcsftime - convert date and time to a wide-character string</blockquote><h4><a name="tag_03_832_02"></a>SYNOPSIS</h4><blockquote class="synopsis"><p><code><tt>#include <<a href="../basedefs/wchar.h.html">wchar.h</a>><br><br> size_t wcsftime(wchar_t *restrict</tt> <i>wcs</i><tt>, size_t</tt> <i>maxsize</i><tt>,<br> const wchar_t *restrict</tt> <i>format</i><tt>, const struct tm *restrict</tt><i>timeptr</i><tt>);<br></tt></code></p></blockquote><h4><a name="tag_03_832_03"></a>DESCRIPTION</h4><blockquote><div class="box"><sup>[<a href="javascript:open_code('CX')">CX</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]"border="0"> The functionality described on this reference page is aligned with the ISO C standard. Any conflict between therequirements described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 defers tothe ISO C standard. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></div><p>The <i>wcsftime</i>() function shall be equivalent to the <a href="../functions/strftime.html"><i>strftime</i>()</a> function,except that:</p><ul><li><p>The argument <i>wcs</i> points to the initial element of an array of wide characters into which the generated output is to beplaced.</p></li><li><p>The argument <i>maxsize</i> indicates the maximum number of wide characters to be placed in the output array.</p></li><li><p>The argument <i>format</i> is a wide-character string and the conversion specifications are replaced by corresponding sequencesof wide characters.</p></li><li><p>The return value indicates the number of wide characters placed in the output array.</p></li></ul><p>If copying takes place between objects that overlap, the behavior is undefined.</p></blockquote><h4><a name="tag_03_832_04"></a>RETURN VALUE</h4><blockquote><p>If the total number of resulting wide-character codes including the terminating null wide-character code is no more than<i>maxsize</i>, <i>wcsftime</i>() shall return the number of wide-character codes placed into the array pointed to by <i>wcs</i>,not including the terminating null wide-character code. Otherwise, zero is returned and the contents of the array areunspecified.</p></blockquote><h4><a name="tag_03_832_05"></a>ERRORS</h4><blockquote><p>No errors are defined.</p></blockquote><hr><div class="box"><em>The following sections are informative.</em></div><h4><a name="tag_03_832_06"></a>EXAMPLES</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_832_07"></a>APPLICATION USAGE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_832_08"></a>RATIONALE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_832_09"></a>FUTURE DIRECTIONS</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_832_10"></a>SEE ALSO</h4><blockquote><p><a href="strftime.html"><i>strftime</i>()</a>, the Base Definitions volume of IEEE Std 1003.1-2001, <a href="../basedefs/wchar.h.html"><i><wchar.h></i></a></p></blockquote><h4><a name="tag_03_832_11"></a>CHANGE HISTORY</h4><blockquote><p>First released in Issue 4.</p></blockquote><h4><a name="tag_03_832_12"></a>Issue 5</h4><blockquote><p>Moved from ENHANCED I18N to BASE and the [ENOSYS] error is removed.</p><p>Aligned with ISO/IEC 9899:1990/Amendment 1:1995 (E). Specifically, the type of the <i>format</i> argument is changed from<b>const char *</b> to <b>const wchar_t *</b>.</p></blockquote><h4><a name="tag_03_832_13"></a>Issue 6</h4><blockquote><p>The <i>wcsftime</i>() prototype is updated for alignment with the ISO/IEC 9899:1999 standard.</p></blockquote><div class="box"><em>End of informative text.</em></div><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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