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</table></div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:c/navbar_content&action=edit">[edit]</a></span></div></div></div></div><div class="t-navbar-sep"> </div><div class="t-navbar-head"><a href="../chrono.html" title="c/chrono"> Date and time utilities</a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv-h1"><td colspan="5"> Functions</td></tr>
<tr class="t-nv-h2"><td colspan="5"> Time manipulation</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="difftime.html" title="c/chrono/difftime"><span class="t-lines"><span>difftime</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="time.html" title="c/chrono/time"><span class="t-lines"><span>time</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="clock.html" title="c/chrono/clock"><span class="t-lines"><span>clock</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="timespec_get.html" title="c/chrono/timespec get"><span class="t-lines"><span>timespec_get</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Format conversions</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="asctime.html" title="c/chrono/asctime"><span class="t-lines"><span>asctime</span><span>asctime_s</span></span></a></div><div><span class="t-lines"><span></span><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="ctime.html" title="c/chrono/ctime"><span class="t-lines"><span>ctime</span><span>ctime_s</span></span></a></div><div><span class="t-lines"><span></span><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strftime.html" title="c/chrono/strftime"><span class="t-lines"><span>strftime</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><strong class="selflink"><span class="t-lines"><span>wcsftime</span></span></strong></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c95">(C95)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="gmtime.html" title="c/chrono/gmtime"><span class="t-lines"><span>gmtime</span><span>gmtime_s</span></span></a></div><div><span class="t-lines"><span></span><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="localtime.html" title="c/chrono/localtime"><span class="t-lines"><span>localtime</span><span>localtime_s</span></span></a></div><div><span class="t-lines"><span></span><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="mktime.html" title="c/chrono/mktime"><span class="t-lines"><span>mktime</span></span></a></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> Constants</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="CLOCKS_PER_SEC.html" title="c/chrono/CLOCKS PER SEC"><span class="t-lines"><span>CLOCKS_PER_SEC</span></span></a></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> Types</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="tm.html" title="c/chrono/tm"><span class="t-lines"><span>tm</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="time_t.html" title="c/chrono/time t"><span class="t-lines"><span>time_t</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="clock_t.html" title="c/chrono/clock t"><span class="t-lines"><span>clock_t</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="timespec.html" title="c/chrono/timespec"><span class="t-lines"><span>timespec</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div></td></tr>
</table></div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:c/chrono/navbar_content&action=edit">[edit]</a></span></div></div></div></div><div class="t-navbar-sep"> </div></div>
<table class="t-dcl-begin"><tbody>
<tr class="t-dsc-header">
<td> <div>Defined in header <code><wchar.h></code>
</div></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi c source-c"><a href="../types/size_t.html"><span class="kw100">size_t</span></a> wcsftime<span class="br0">(</span> <span class="kw4">wchar_t</span><span class="sy2">*</span> str, <a href="../types/size_t.html"><span class="kw100">size_t</span></a> count, <span class="kw4">const</span> <span class="kw4">wchar_t</span><span class="sy2">*</span> format, <a href="tm.html"><span class="kw522">tm</span></a><span class="sy2">*</span> <a href="time.html"><span class="kw513">time</span></a> <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td class="t-dcl-nopad"> </td>
<td> <span class="t-mark-rev t-since-c95">(since C95)</span> </td>
</tr>
<tr class="t-dcl-sep"><td></td><td></td><td></td></tr>
</tbody></table>
<p>Converts the date and time information from a given calendar time <code>time</code> to a null-terminated wide character string <code>str</code> according to format string <code>format</code>. Up to <code>count</code> bytes are written.
</p>
<table id="toc" class="toc"><tr><td><div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="wcsftime.html#Parameters"><span class="tocnumber">1</span> <span class="toctext">Parameters</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="wcsftime.html#Return_value"><span class="tocnumber">2</span> <span class="toctext">Return value</span></a></li>
<li class="toclevel-1 tocsection-3"><a href="wcsftime.html#Example"><span class="tocnumber">3</span> <span class="toctext">Example</span></a></li>
<li class="toclevel-1 tocsection-4"><a href="wcsftime.html#References"><span class="tocnumber">4</span> <span class="toctext">References</span></a></li>
<li class="toclevel-1 tocsection-5"><a href="wcsftime.html#See_also"><span class="tocnumber">5</span> <span class="toctext">See also</span></a></li>
</ul>
</td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/chrono/wcsftime&action=edit&section=1" title="Edit section: Parameters">edit</a>]</span> <span class="mw-headline" id="Parameters">Parameters</span></h3>
<table class="t-par-begin">
<tr class="t-par">
<td> str
</td>
<td> -
</td>
<td> pointer to the first element of the wchar_t array for output
</td></tr>
<tr class="t-par">
<td> count
</td>
<td> -
</td>
<td> maximum number of wide characters to write
</td></tr>
<tr class="t-par">
<td> format
</td>
<td> -
</td>
<td> pointer to a null-terminated wide character string specifying the format of conversion.
<p>The format string consists of zero or more conversion specifiers and ordinary characters (except <code>%</code>). All ordinary characters, including the terminating null character, are copied to the output string without modification. Each conversion specification begins with <code>%</code> character, optionally followed by <code>E</code> or <code>O</code> modifier (ignored if unsupported by the locale), followed by the character that determines the behavior of the specifier. The following format specifiers are available:
</p>
<table class="wikitable" style="font-size:85%; max-width:90em;">
<tr>
<th> Conversion<br /> specifier
</th>
<th> Explanation
</th>
<th> Used fields
</th></tr>
<tr>
<th> <code>%</code>
</th>
<td> writes literal <code>%</code>. The full conversion specification must be <code>%%</code>.
</td>
<td>
</td></tr>
<tr>
<th> <code>n</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes newline character
</td>
<td>
</td></tr>
<tr>
<th> <code>t</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes horizontal tab character
</td>
<td>
</td></tr>
<tr>
<th colspan="3"> Year
</th></tr>
<tr>
<th> <code>Y</code>
</th>
<td> writes <b>year</b> as a decimal number, e.g. 2017
</td>
<td> <code><b>tm_year</b></code>
</td></tr>
<tr>
<th> <code>EY</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>year</b> in the alternative representation, e.g.平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale
</td>
<td> <code><b>tm_year</b></code>
</td></tr>
<tr>
<th> <code>y</code>
</th>
<td> writes last 2 digits of <b>year</b> as a decimal number (range <code>[00,99]</code>)
</td>
<td> <code><b>tm_year</b></code>
</td></tr>
<tr>
<th> <code>Oy</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes last 2 digits of <b>year</b> using the alternative numeric system, e.g. 十一 instead of 11 in ja_JP locale
</td>
<td> <code><b>tm_year</b></code>
</td></tr>
<tr>
<th> <code>Ey</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>year</b> as offset from locale's alternative calendar period <code>%EC</code> (locale-dependent)
</td>
<td> <code><b>tm_year</b></code>
</td></tr>
<tr>
<th> <code>C</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes first 2 digits of <b>year</b> as a decimal number (range <code>[00,99]</code>)
</td>
<td> <code><b>tm_year</b></code>
</td></tr>
<tr>
<th> <code>EC</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes name of the <b>base year (period)</b> in the locale's alternative representation, e.g. 平成 (Heisei era) in ja_JP
</td>
<td> <code><b>tm_year</b></code>
</td></tr>
<tr>
<th> <code>G</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>ISO 8601 week-based year</b>, i.e. the year that contains the specified week.
<p>In IS0 8601 weeks begin with Monday and the first week of the year must satisfy the following requirements:
</p>
<ul><li> Includes January 4
</li><li> Includes first Thursday of the year
</li></ul>
</td>
<td> <code><b>tm_year</b></code>, <code><b>tm_wday</b></code>, <code><b>tm_yday</b></code>
</td></tr>
<tr>
<th> <code>g</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes last 2 digits of <b>ISO 8601 week-based year</b>, i.e. the year that contains the specified week (range <code>[00,99]</code>).
<p>In IS0 8601 weeks begin with Monday and the first week of the year must satisfy the following requirements:
</p>
<ul><li> Includes January 4
</li><li> Includes first Thursday of the year
</li></ul>
</td>
<td> <code><b>tm_year</b></code>, <code><b>tm_wday</b></code>, <code><b>tm_yday</b></code>
</td></tr>
<tr>
<th colspan="3"> Month
</th></tr>
<tr>
<th> <code>b</code>
</th>
<td> writes <b>abbreviated month</b> name, e.g. <code>Oct</code> (locale dependent)
</td>
<td> <code><b>tm_mon</b></code>
</td></tr>
<tr>
<th> <code>h</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> synonym of <code>b</code>
</td>
<td> <code><b>tm_mon</b></code>
</td></tr>
<tr>
<th> <code>B</code>
</th>
<td> writes <b>full month</b> name, e.g. <code>October</code> (locale dependent)
</td>
<td> <code><b>tm_mon</b></code>
</td></tr>
<tr>
<th> <code>m</code>
</th>
<td> writes <b>month</b> as a decimal number (range <code>[01,12]</code>)
</td>
<td> <code><b>tm_mon</b></code>
</td></tr>
<tr>
<th> <code>Om</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>month</b> using the alternative numeric system, e.g. 十二 instead of 12 in ja_JP locale
</td>
<td> <code><b>tm_mon</b></code>
</td></tr>
<tr>
<th colspan="3"> Week
</th></tr>
<tr>
<th> <code>U</code>
</th>
<td> writes <b>week of the year</b> as a decimal number (Sunday is the first day of the week) (range <code>[00,53]</code>)
</td>
<td> <code><b>tm_year</b></code>, <code><b>tm_wday</b></code>, <code><b>tm_yday</b></code>
</td></tr>
<tr>
<th> <code>OU</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>week of the year</b>, as by <code>%U</code>, using the alternative numeric system, e.g. 五十二 instead of 52 in ja_JP locale
</td>
<td> <code><b>tm_year</b></code>, <code><b>tm_wday</b></code>, <code><b>tm_yday</b></code>
</td></tr>
<tr>
<th> <code>W</code>
</th>
<td> writes <b>week of the year</b> as a decimal number (Monday is the first day of the week) (range <code>[00,53]</code>)
</td>
<td> <code><b>tm_year</b></code>, <code><b>tm_wday</b></code>, <code><b>tm_yday</b></code>
</td></tr>
<tr>
<th> <code>OW</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>week of the year</b>, as by <code>%W</code>, using the alternative numeric system, e.g. 五十二 instead of 52 in ja_JP locale
</td>
<td> <code><b>tm_year</b></code>, <code><b>tm_wday</b></code>, <code><b>tm_yday</b></code>
</td></tr>
<tr>
<th> <code>V</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>ISO 8601 week of the year</b> (range <code>[01,53]</code>).
<p>In IS0 8601 weeks begin with Monday and the first week of the year must satisfy the following requirements:
</p>
<ul><li> Includes January 4
</li><li> Includes first Thursday of the year
</li></ul>
</td>
<td> <code><b>tm_year</b></code>, <code><b>tm_wday</b></code>, <code><b>tm_yday</b></code>
</td></tr>
<tr>
<th> <code>OV</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>week of the year</b>, as by <code>%V</code>, using the alternative numeric system, e.g. 五十二 instead of 52 in ja_JP locale
</td>
<td> <code><b>tm_year</b></code>, <code><b>tm_wday</b></code>, <code><b>tm_yday</b></code>
</td></tr>
<tr>
<th colspan="3"> Day of the year/month
</th></tr>
<tr>
<th> <code>j</code>
</th>
<td> writes <b>day of the year</b> as a decimal number (range <code>[001,366]</code>)
</td>
<td> <code><b>tm_yday</b></code>
</td></tr>
<tr>
<th> <code>d</code>
</th>
<td> writes <b>day of the month</b> as a decimal number (range <code>[01,31]</code>)
</td>
<td> <code><b>tm_mday</b></code>
</td></tr>
<tr>
<th> <code>Od</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes zero-based <b>day of the month</b> using the alternative numeric system, e.g 二十七 instead of 23 in ja_JP locale
<p>Single character is preceded by a space.
</p>
</td>
<td> <code><b>tm_mday</b></code>
</td></tr>
<tr>
<th> <code>e</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>day of the month</b> as a decimal number (range <code>[1,31]</code>).
<p>Single digit is preceded by a space.
</p>
</td>
<td> <code><b>tm_mday</b></code>
</td></tr>
<tr>
<th> <code>Oe</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes one-based <b>day of the month</b> using the alternative numeric system, e.g. 二十七 instead of 27 in ja_JP locale
<p>Single character is preceded by a space.
</p>
</td>
<td> <code><b>tm_mday</b></code>
</td></tr>
<tr>
<th colspan="3"> Day of the week
</th></tr>
<tr>
<th> <code>a</code>
</th>
<td> writes <b>abbreviated weekday</b> name, e.g. <code>Fri</code> (locale dependent)
</td>
<td> <code><b>tm_wday</b></code>
</td></tr>
<tr>
<th> <code>A</code>
</th>
<td> writes <b>full weekday</b> name, e.g. <code>Friday</code> (locale dependent)
</td>
<td> <code><b>tm_wday</b></code>
</td></tr>
<tr>
<th> <code>w</code>
</th>
<td> writes <b>weekday</b> as a decimal number, where Sunday is <code>0</code> (range <code>[0-6]</code>)
</td>
<td> <code><b>tm_wday</b></code>
</td></tr>
<tr>
<th> <code>Ow</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>weekday</b>, where Sunday is <code>0</code>, using the alternative numeric system, e.g. 二 instead of 2 in ja_JP locale
</td>
<td> <code><b>tm_wday</b></code>
</td></tr>
<tr>
<th> <code>u</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>weekday</b> as a decimal number, where Monday is <code>1</code> (ISO 8601 format) (range <code>[1-7]</code>)
</td>
<td> <code><b>tm_wday</b></code>
</td></tr>
<tr>
<th> <code>Ou</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>weekday</b>, where Monday is <code>1</code>, using the alternative numeric system, e.g. 二 instead of 2 in ja_JP locale
</td>
<td> <code><b>tm_wday</b></code>
</td></tr>
<tr>
<th colspan="3"> Hour, minute, second
</th></tr>
<tr>
<th> <code>H</code>
</th>
<td> writes <b>hour</b> as a decimal number, 24 hour clock (range <code>[00-23]</code>)
</td>
<td> <code><b>tm_hour</b></code>
</td></tr>
<tr>
<th> <code>OH</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>hour</b> from 24-hour clock using the alternative numeric system, e.g. 十八 instead of 18 in ja_JP locale
</td>
<td> <code><b>tm_hour</b></code>
</td></tr>
<tr>
<th> <code>I</code>
</th>
<td> writes <b>hour</b> as a decimal number, 12 hour clock (range <code>[01,12]</code>)
</td>
<td> <code><b>tm_hour</b></code>
</td></tr>
<tr>
<th> <code>OI</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>hour</b> from 12-hour clock using the alternative numeric system, e.g. 六 instead of 06 in ja_JP locale
</td>
<td> <code><b>tm_hour</b></code>
</td></tr>
<tr>
<th> <code>M</code>
</th>
<td> writes <b>minute</b> as a decimal number (range <code>[00,59]</code>)
</td>
<td> <code><b>tm_min</b></code>
</td></tr>
<tr>
<th> <code>OM</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>minute</b> using the alternative numeric system, e.g. 二十五 instead of 25 in ja_JP locale
</td>
<td> <code><b>tm_min</b></code>
</td></tr>
<tr>
<th> <code>S</code>
</th>
<td> writes <b>second</b> as a decimal number (range <code>[00,60]</code>)
</td>
<td> <code><b>tm_sec</b></code>
</td></tr>
<tr>
<th> <code>OS</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>second</b> using the alternative numeric system, e.g. 二十四 instead of 24 in ja_JP locale
</td>
<td> <code><b>tm_sec</b></code>
</td></tr>
<tr>
<th colspan="3"> Other
</th></tr>
<tr>
<th> <code>c</code>
</th>
<td> writes <b>standard date and time string</b>, e.g. <code>Sun Oct 17 04:41:13 2010</code> (locale dependent)
</td>
<td> all
</td></tr>
<tr>
<th> <code>Ec</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>alternative date and time string</b>, e.g. using 平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale
</td>
<td> all
</td></tr>
<tr>
<th> <code>x</code>
</th>
<td> writes localized <b>date representation</b> (locale dependent)
</td>
<td> all
</td></tr>
<tr>
<th> <code>Ex</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>alternative date representation</b>, e.g. using 平成23年 (year Heisei 23) instead of 2011年 (year 2011) in ja_JP locale
</td>
<td> all
</td></tr>
<tr>
<th> <code>X</code>
</th>
<td> writes localized <b>time representation</b> (locale dependent)
</td>
<td> all
</td></tr>
<tr>
<th> <code>EX</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>alternative time representation</b> (locale dependent)
</td>
<td> all
</td></tr>
<tr>
<th> <code>D</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> equivalent to <b>"%m/%d/%y"</b>
</td>
<td> <code><b>tm_mon</b></code>, <code><b>tm_mday</b></code>, <code><b>tm_year</b></code>
</td></tr>
<tr>
<th> <code>F</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> equivalent to <b>"%Y-%m-%d"</b> (the ISO 8601 date format)
</td>
<td> <code><b>tm_mon</b></code>, <code><b>tm_mday</b></code>, <code><b>tm_year</b></code>
</td></tr>
<tr>
<th> <code>r</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes localized <b>12-hour clock</b> time (locale dependent)
</td>
<td> <code><b>tm_hour</b></code>, <code><b>tm_min</b></code>, <code><b>tm_sec</b></code>
</td></tr>
<tr>
<th> <code>R</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> equivalent to <b>"%H:%M"</b>
</td>
<td> <code><b>tm_hour</b></code>, <code><b>tm_min</b></code>
</td></tr>
<tr>
<th> <code>T</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> equivalent to <b>"%H:%M:%S"</b> (the ISO 8601 time format)
</td>
<td> <code><b>tm_hour</b></code>, <code><b>tm_min</b></code>, <code><b>tm_sec</b></code>
</td></tr>
<tr>
<th> <code>p</code>
</th>
<td> writes localized <b>a.m. or p.m.</b> (locale dependent)
</td>
<td> <code><b>tm_hour</b></code>
</td></tr>
<tr>
<th> <code>z</code><br /><span class="t-mark-rev t-since-c99">(C99)</span>
</th>
<td> writes <b>offset from UTC</b> in the ISO 8601 format (e.g. <code>-0430</code>), or no characters if the time zone information is not available
</td>
<td> <code><b>tm_isdst</b></code>
</td></tr>
<tr>
<th> <code>Z</code>
</th>
<td> writes <b>time zone name or abbreviation</b>, or no characters if the time zone information is not available (locale dependent)
</td>
<td> <code><b>tm_isdst</b></code>
</td></tr></table>
<p><br />
</p>
</td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/chrono/wcsftime&action=edit&section=2" title="Edit section: Return value">edit</a>]</span> <span class="mw-headline" id="Return_value">Return value</span></h3>
<p>number of wide characters written into the wide character array pointed to by <code>str</code> not including the terminating <span class="t-c"><span class="mw-geshi c source-c">L<span class="st0">'<span class="es5">\0</span>'</span></span></span> on success. If <code>count</code> was reached before the entire string could be stored, <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">0</span></span></span> is returned and the contents are undefined.
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/chrono/wcsftime&action=edit&section=3" title="Edit section: Example">edit</a>]</span> <span class="mw-headline" id="Example">Example</span></h3>
<div class="t-example"><div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#include <stdio.h></span>
<span class="co2">#include <time.h></span>
<span class="co2">#include <wchar.h></span>
<span class="co2">#include <locale.h></span>
 
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="kw4">wchar_t</span> buff<span class="br0">[</span><span class="nu0">40</span><span class="br0">]</span><span class="sy4">;</span>
<span class="kw1">struct</span> <a href="tm.html"><span class="kw522">tm</span></a> my_time <span class="sy1">=</span> <span class="br0">{</span> .<span class="me1">tm_year</span><span class="sy1">=</span><span class="nu0">112</span>, <span class="co1">// = year 2012</span>
.<span class="me1">tm_mon</span><span class="sy1">=</span><span class="nu0">9</span>, <span class="co1">// = 10th month</span>
.<span class="me1">tm_mday</span><span class="sy1">=</span><span class="nu0">9</span>, <span class="co1">// = 9th day</span>
.<span class="me1">tm_hour</span><span class="sy1">=</span><span class="nu0">8</span>, <span class="co1">// = 8 hours</span>
.<span class="me1">tm_min</span><span class="sy1">=</span><span class="nu0">10</span>, <span class="co1">// = 10 minutes</span>
.<span class="me1">tm_sec</span><span class="sy1">=</span><span class="nu0">20</span> <span class="co1">// = 20 secs</span>
<span class="br0">}</span><span class="sy4">;</span>
 
<span class="kw1">if</span> <span class="br0">(</span>wcsftime<span class="br0">(</span>buff, <span class="kw4">sizeof</span> buff, L<span class="st0">"%A %c"</span>, <span class="sy3">&</span>my_time<span class="br0">)</span><span class="br0">)</span> <span class="br0">{</span>
<a href="../io/fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"%ls<span class="es1">\n</span>"</span>, buff<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span> <span class="kw1">else</span> <span class="br0">{</span>
<a href="../io/puts.html"><span class="kw835">puts</span></a><span class="br0">(</span><span class="st0">"wcsftime failed"</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
 
<a href="../locale/setlocale.html"><span class="kw900">setlocale</span></a><span class="br0">(</span><a href="../locale/LC_categories.html"><span class="kw903">LC_ALL</span></a>, <span class="st0">"ja_JP.utf8"</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="kw1">if</span> <span class="br0">(</span>wcsftime<span class="br0">(</span>buff, <span class="kw4">sizeof</span> buff, L<span class="st0">"%A %c"</span>, <span class="sy3">&</span>my_time<span class="br0">)</span><span class="br0">)</span> <span class="br0">{</span>
<a href="../io/fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"%ls<span class="es1">\n</span>"</span>, buff<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span> <span class="kw1">else</span> <span class="br0">{</span>
<a href="../io/puts.html"><span class="kw835">puts</span></a><span class="br0">(</span><span class="st0">"wcsftime failed"</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="br0">}</span></pre></div></div>
<p>Output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">Sunday Sun Oct 9 08:10:20 2012
日曜日 2012年10月09日 08時10分20秒</pre></div></div>
</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/chrono/wcsftime&action=edit&section=4" title="Edit section: References">edit</a>]</span> <span class="mw-headline" id="References">References</span></h3>
<div class="t-ref-std-11">
<ul><li> C11 standard (ISO/IEC 9899:2011):
</li></ul>
<dl><dd><ul><li> 7.29.5.1 The wcsftime function (p: 439-440)
</li></ul>
</dd></dl>
<div class="t-ref-std-c99">
<ul><li> C99 standard (ISO/IEC 9899:1999):
</li></ul>
<dl><dd><ul><li> 7.24.5.1 The wcsftime function (p: 385-386)
</li></ul>
</dd></dl>
</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/chrono/wcsftime&action=edit&section=5" title="Edit section: See also">edit</a>]</span> <span class="mw-headline" id="See_also">See also</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="strftime.html" title="c/chrono/strftime"> <span class="t-lines"><span>strftime</span></span></a></div></div>
</td>
<td> converts a <code>tm</code> object to custom textual representation <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:c/chrono/dsc_strftime&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td colspan="2"> <div class="t-dsc-see"><span><a href="../../cpp/chrono/c/wcsftime.html" title="cpp/chrono/c/wcsftime">C++ documentation</a></span> for <span class="t-dsc-see-tt"><span>wcsftime</span></span></div>
</td></tr>
</table></div>
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