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<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="isgraph.html" title="c/string/byte/isgraph"><span class="t-lines"><span>isgraph</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="isspace.html" title="c/string/byte/isspace"><span class="t-lines"><span>isspace</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="isprint.html" title="c/string/byte/isprint"><span class="t-lines"><span>isprint</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="ispunct.html" title="c/string/byte/ispunct"><span class="t-lines"><span>ispunct</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="tolower.html" title="c/string/byte/tolower"><span class="t-lines"><span>tolower</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="toupper.html" title="c/string/byte/toupper"><span class="t-lines"><span>toupper</span></span></a></div></div></td></tr>
</table></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Conversions to numeric formats</td></tr>
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="atof.html" title="c/string/byte/atof"><span class="t-lines"><span>atof</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="atoi.html" title="c/string/byte/atoi"><span class="t-lines"><span>atoi</span><span>atol</span><span>atoll</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strtol.html" title="c/string/byte/strtol"><span class="t-lines"><span>strtol</span><span>strtoll</span></span></a></div></div></td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strtoul.html" title="c/string/byte/strtoul"><span class="t-lines"><span>strtoul</span><span>strtoull</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strtof.html" title="c/string/byte/strtof"><span class="t-lines"><span>strtof</span><span>strtod</span><span>strtold</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strtoimax.html" title="c/string/byte/strtoimax"><span class="t-lines"><span>strtoimax</span><span>strtoumax</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div></div></td></tr>
</table></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> String manipulation</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strcpy.html" title="c/string/byte/strcpy"><span class="t-lines"><span>strcpy</span><span>strcpy_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="strncpy.html" title="c/string/byte/strncpy"><span class="t-lines"><span>strncpy</span><span>strncpy_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="strcat.html" title="c/string/byte/strcat"><span class="t-lines"><span>strcat</span><span>strcat_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="strncat.html" title="c/string/byte/strncat"><span class="t-lines"><span>strncat</span><span>strncat_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="strxfrm.html" title="c/string/byte/strxfrm"><span class="t-lines"><span>strxfrm</span></span></a></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> String examination</td></tr>
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strlen.html" title="c/string/byte/strlen"><span class="t-lines"><span>strlen</span><span>strnlen_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="strcmp.html" title="c/string/byte/strcmp"><span class="t-lines"><span>strcmp</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strncmp.html" title="c/string/byte/strncmp"><span class="t-lines"><span>strncmp</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strcoll.html" title="c/string/byte/strcoll"><span class="t-lines"><span>strcoll</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strchr.html" title="c/string/byte/strchr"><span class="t-lines"><span>strchr</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strrchr.html" title="c/string/byte/strrchr"><span class="t-lines"><span>strrchr</span></span></a></div></div></td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strspn.html" title="c/string/byte/strspn"><span class="t-lines"><span>strspn</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strcspn.html" title="c/string/byte/strcspn"><span class="t-lines"><span>strcspn</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strpbrk.html" title="c/string/byte/strpbrk"><span class="t-lines"><span>strpbrk</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strstr.html" title="c/string/byte/strstr"><span class="t-lines"><span>strstr</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="strtok.html" title="c/string/byte/strtok"><span class="t-lines"><span>strtok</span><span>strtok_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>
</table></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Memory manipulation</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="memchr.html" title="c/string/byte/memchr"><span class="t-lines"><span>memchr</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="memcmp.html" title="c/string/byte/memcmp"><span class="t-lines"><span>memcmp</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="memset.html" title="c/string/byte/memset"><span class="t-lines"><span>memset</span><span>memset_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="memcpy.html" title="c/string/byte/memcpy"><span class="t-lines"><span>memcpy</span><span>memcpy_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="memmove.html" title="c/string/byte/memmove"><span class="t-lines"><span>memmove</span><span>memmove_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-h2"><td colspan="5"> Miscellaneous</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><strong class="selflink"><span class="t-lines"><span>strerror</span><span>strerror_s</span><span>strerrorlen_s</span></span></strong></div><div><span class="t-lines"><span></span><span><span class="t-mark-rev t-since-c11">(C11)</span></span><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/string/byte/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><string.h></code>
</div></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi c source-c"><span class="kw4">char</span><span class="sy2">*</span> strerror<span class="br0">(</span> <span class="kw4">int</span> errnum <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (1) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl t-since-c11">
<td> <div><span class="mw-geshi c source-c">errno_t strerror_s<span class="br0">(</span> <span class="kw4">char</span> <span class="sy2">*</span>buf, rsize_t bufsz, errno_t errnum <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (2) </td>
<td> <span class="t-mark-rev t-since-c11">(since C11)</span> </td>
</tr>
<tr class="t-dcl t-since-c11">
<td> <div><span class="mw-geshi c source-c"><a href="../../types/size_t.html"><span class="kw100">size_t</span></a> strerrorlen_s<span class="br0">(</span> errno_t errnum <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (3) </td>
<td> <span class="t-mark-rev t-since-c11">(since C11)</span> </td>
</tr>
<tr class="t-dcl-sep"><td></td><td></td><td></td></tr>
</tbody></table>
<div class="t-li1"><span class="t-li">1)</span> Returns a pointer to the textual description of the system error code <code>errnum</code>, identical to the description that would be printed by <span class="t-lc"><a href="../../io/perror.html" title="c/io/perror">perror()</a></span>.</div>
<div class="t-li1"><span class="t-li"></span> <code>errnum</code> is usually acquired from the <code>errno</code> variable, however the function accepts any value of type <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span>. The contents of the string are locale-specific.</div>
<div class="t-li1"><span class="t-li"></span> The returned string must not be modified by the program, but may be overwritten by a subsequent call to the <code>strerror</code> function. <code>strerror</code> is not required to be thread-safe. Implementations may be returning different pointers to static read-only string literals or may be returning the same pointer over and over, pointing at a static buffer in which strerror places the string.</div>
<div class="t-li1"><span class="t-li">2)</span> Same as <span class="t-v">(1)</span>, except that the message is copied into user-provided storage <code>buf</code>. No more than <code>bufsz-1</code> bytes are written, the buffer is always null-terminated. If the message had to be truncated to fit the buffer and <code>bufsz</code> is greater than 3, then only <code>bufsz-4</code> bytes are written, and the characters <span class="t-c"><span class="mw-geshi c source-c"><span class="st0">"..."</span></span></span> are appended before the null terminator. In addition, the following errors are detected at runtime and call the currently installed <a href="../../error/set_constraint_handler_s.html" title="c/error/set constraint handler s">constraint handler</a> function:
<dl><dd><ul><li> <code>buf</code> is a null pointer
</li><li> <code>bufsz</code> is zero or greater than <span class="t-lc">RSIZE_MAX</span></div>
</li></ul>
</dd></dl>
<div class="t-li1"><span class="t-li"></span> The behavior is undefined if writing to <code>buf</code> occurs past the end of the array, which can happen when the size of the buffer pointed to by <code>buf</code> is less than the number of characters in the error message which in turn is less than <code>bufsz</code>.</div>
<div class="t-li1"><span class="t-li">3)</span> Computes the length of the untruncated locale-specific error message that <code>strerror_s</code> would write if it were called with <code>errnum</code>. The length does not include the null terminator.
<dl><dd>As with all bounds-checked functions, <code>strerror_s</code> and <code>strerrorlen_s</code> are only guaranteed to be available if <span class="t-c"><span class="mw-geshi c source-c">__STDC_LIB_EXT1__</span></span> is defined by the implementation and if the user defines <span class="t-c"><span class="mw-geshi c source-c">__STDC_WANT_LIB_EXT1__</span></span> to the integer constant <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">1</span></span></span> before including <code>string.h</code>.</div>
</dd></dl>
<table id="toc" class="toc"><tr><td><div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="strerror.html#Parameters"><span class="tocnumber">1</span> <span class="toctext">Parameters</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="strerror.html#Return_value"><span class="tocnumber">2</span> <span class="toctext">Return value</span></a></li>
<li class="toclevel-1 tocsection-3"><a href="strerror.html#Notes"><span class="tocnumber">3</span> <span class="toctext">Notes</span></a></li>
<li class="toclevel-1 tocsection-4"><a href="strerror.html#Example"><span class="tocnumber">4</span> <span class="toctext">Example</span></a></li>
<li class="toclevel-1 tocsection-5"><a href="strerror.html#References"><span class="tocnumber">5</span> <span class="toctext">References</span></a></li>
<li class="toclevel-1 tocsection-6"><a href="strerror.html#See_also"><span class="tocnumber">6</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/string/byte/strerror&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> errnum
</td>
<td> -
</td>
<td> integral value referring to an error code
</td></tr>
<tr class="t-par">
<td> buf
</td>
<td> -
</td>
<td> pointer to a user-provided buffer
</td></tr>
<tr class="t-par">
<td> bufsz
</td>
<td> -
</td>
<td> size of the user-provided buffer
</td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/string/byte/strerror&action=edit&section=2" title="Edit section: Return value">edit</a>]</span> <span class="mw-headline" id="Return_value">Return value</span></h3>
<div class="t-li1"><span class="t-li">1)</span> Pointer to a null-terminated byte string corresponding to the <span class="t-lc"><a href="../../error/errno.html" title="c/error/errno">errno</a></span> error code <code>errnum</code>.</div>
<div class="t-li1"><span class="t-li">2)</span> Zero if the entire message was successfully stored in <code>buf</code>, non-zero otherwise.</div>
<div class="t-li1"><span class="t-li">3)</span> Length (not including the null terminator) of the message that <code>strerror_s</code> would return</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/string/byte/strerror&action=edit&section=3" title="Edit section: Notes">edit</a>]</span> <span class="mw-headline" id="Notes">Notes</span></h3>
<p><a rel="nofollow" class="external text" href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/strerror.html">POSIX</a> allows subsequent calls to <code>strerror</code> to invalidate the pointer value returned by an earlier call. It also specifies that it is the <a href="../../locale/LC_categories.html" title="c/locale/LC categories"><tt>LC_MESSAGES</tt></a> locale facet that controls the contents of these messages.
</p><p><code>strerror_s</code> is the only bounds-checked function that allows truncation, because providing as much information as possible about a failure was deemed to be more desirable. POSIX also defines <a rel="nofollow" class="external text" href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/strerror.html">strerror_r</a> for similar purposes.
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/string/byte/strerror&action=edit&section=4" 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">#define __STDC_WANT_LIB_EXT1__ 1</span>
<span class="co2">#include <stdio.h></span>
<span class="co2">#include <errno.h></span>
<span class="co2">#include <string.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>
<a href="../../io.html"><span class="kw883">FILE</span></a> <span class="sy2">*</span>fp <span class="sy1">=</span> <a href="../../io/fopen.html"><span class="kw818">fopen</span></a><span class="br0">(</span><a href="../../io/tmpnam.html"><span class="kw882">tmpnam</span></a><span class="br0">(</span><span class="br0">(</span><span class="kw4">char</span><span class="br0">[</span><a href="../../io.html"><span class="kw899">L_tmpnam</span></a><span class="br0">]</span><span class="br0">)</span><span class="br0">{</span><span class="nu0">0</span><span class="br0">}</span><span class="br0">)</span>, <span class="st0">"r"</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">if</span><span class="br0">(</span>fp<span class="sy1">==</span><a href="../../types/NULL.html"><span class="kw103">NULL</span></a><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">"File opening error: %s<span class="es1">\n</span>"</span>, strerror<span class="br0">(</span><span class="kw2">errno</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<a href="../../locale/setlocale.html"><span class="kw900">setlocale</span></a><span class="br0">(</span>LC_MESSAGES, <span class="st0">"de_DE.utf8"</span><span class="br0">)</span><span class="sy4">;</span>
<a href="../../io/fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"Now in German: %s<span class="es1">\n</span>"</span>, strerror<span class="br0">(</span><span class="kw2">errno</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="co2">#ifdef __STDC_LIB_EXT1__</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">"zh_CN.utf8"</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// printf needs CTYPE for multibyte output</span>
<a href="../../types/size_t.html"><span class="kw100">size_t</span></a> errmsglen <span class="sy1">=</span> strerrorlen_s<span class="br0">(</span><span class="kw2">errno</span><span class="br0">)</span> <span class="sy2">+</span> <span class="nu0">1</span><span class="sy4">;</span>
<span class="kw4">char</span> errmsg<span class="br0">[</span>errmsglen<span class="br0">]</span><span class="sy4">;</span>
strerror_s<span class="br0">(</span>errmsg, errmsglen, <span class="kw2">errno</span><span class="br0">)</span><span class="sy4">;</span>
<a href="../../io/fprintf.html"><span class="kw850">printf</span></a><span class="br0">(</span><span class="st0">"Now in Chinese: %s<span class="es1">\n</span>"</span>, errmsg<span class="br0">)</span><span class="sy4">;</span>
<span class="co2">#endif</span>
<span class="br0">}</span>
<span class="br0">}</span></pre></div></div>
<p>Possible output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">File opening error: No such file or directory
Now in German: Datei oder Verzeichnis nicht gefunden
Now in Chinese: 没有那个文件或目录</pre></div></div>
</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/string/byte/strerror&action=edit&section=5" 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> 7.24.6.2 The strerror function (p: 371)
</li></ul>
</dd></dl>
<dl><dd><ul><li> K.3.7.4.2 The strerror_s function (p: 622)
</li></ul>
</dd></dl>
<dl><dd><ul><li> K.3.7.4.3 The strerrorlen_s function (p: 623)
</li></ul>
</dd></dl>
<div class="t-ref-std-c99">
<ul><li> C99 standard (ISO/IEC 9899:1999):
</li></ul>
<dl><dd><ul><li> 7.21.6.2 The strerror function (p: 334)
</li></ul>
</dd></dl>
<div class="t-ref-std-c89">
<ul><li> C89/C90 standard (ISO/IEC 9899:1990):
</li></ul>
<dl><dd><ul><li> 4.11.6.2 The strerror function
</li></ul>
</dd></dl>
</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/string/byte/strerror&action=edit&section=6" 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="../../io/perror.html" title="c/io/perror"> <span class="t-lines"><span>perror</span></span></a></div></div>
</td>
<td> displays a character string corresponding of the current error to <span class="t-lc"><a href="../../io.html" title="c/io">stderr</a></span> <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/io/dsc_perror&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../../error/errno.html" title="c/error/errno"> <span class="t-lines"><span>errno</span></span></a></div></div>
</td>
<td> macro which expands to POSIX-compatible thread-local error number variable<br /><span class="t-mark">(macro variable)</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/error/dsc_errno&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td colspan="2"> <div class="t-dsc-see"><span><a href="../../../cpp/string/byte/strerror.html" title="cpp/string/byte/strerror">C++ documentation</a></span> for <span class="t-dsc-see-tt"><span>strerror</span></span></div>
</td></tr>
</table></div>
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