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<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="fgetc.html" title="c/io/fgetc"><span class="t-lines"><span>fgetc</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="fgets.html" title="c/io/fgets"><span class="t-lines"><span>fgets</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="fputc.html" title="c/io/fputc"><span class="t-lines"><span>fputc</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="fputs.html" title="c/io/fputs"><span class="t-lines"><span>fputs</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="getchar.html" title="c/io/getchar"><span class="t-lines"><span>getchar</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="gets.html" title="c/io/gets"><span class="t-lines"><span>gets</span><span>gets_s</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-c11">(until C11)</span></span><span><span class="t-mark-rev t-since-c11">(since C11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="putchar.html" title="c/io/putchar"><span class="t-lines"><span>putchar</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="puts.html" title="c/io/puts"><span class="t-lines"><span>puts</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="ungetc.html" title="c/io/ungetc"><span class="t-lines"><span>ungetc</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="fgetwc.html" title="c/io/fgetwc"><span class="t-lines"><span>fgetwc</span><span>getwc</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c95">(C95)</span></span><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="fgetws.html" title="c/io/fgetws"><span class="t-lines"><span>fgetws</span></span></a></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="fputwc.html" title="c/io/fputwc"><span class="t-lines"><span>fputwc</span><span>putwc</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c95">(C95)</span></span><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="fputws.html" title="c/io/fputws"><span class="t-lines"><span>fputws</span></span></a></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="getwchar.html" title="c/io/getwchar"><span class="t-lines"><span>getwchar</span></span></a></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="putwchar.html" title="c/io/putwchar"><span class="t-lines"><span>putwchar</span></span></a></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="ungetwc.html" title="c/io/ungetwc"><span class="t-lines"><span>ungetwc</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c95">(C95)</span></span></span></div></div></td></tr>
</table></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Formatted input</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="fscanf.html" title="c/io/fscanf"><span class="t-lines"><span>scanf</span><span>fscanf</span><span>sscanf</span><span>scanf_s</span><span>fscanf_s</span><span>sscanf_s</span></span></a></div><div><span class="t-lines"><span></span><span></span><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><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="fwscanf.html" title="c/io/fwscanf"><span class="t-lines"><span>wscanf</span><span>fwscanf</span><span>swscanf</span><span>wscanf_s</span><span>fwscanf_s</span><span>swscanf_s</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c95">(C95)</span></span><span><span class="t-mark-rev t-since-c95">(C95)</span></span><span><span class="t-mark-rev t-since-c95">(C95)</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><span class="t-mark-rev t-since-c11">(C11)</span></span></span></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="vfscanf.html" title="c/io/vfscanf"><span class="t-lines"><span>vscanf</span><span>vfscanf</span><span>vsscanf</span><span>vscanf_s</span><span>vfscanf_s</span><span>vsscanf_s</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><span class="t-mark-rev t-since-c99">(C99)</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><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="vfwscanf.html" title="c/io/vfwscanf"><span class="t-lines"><span>vwscanf</span><span>vfwscanf</span><span>vswscanf</span><span>vwscanf_s</span><span>vfwscanf_s</span><span>vswscanf_s</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><span class="t-mark-rev t-since-c99">(C99)</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><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"> Formatted output</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="fprintf.html" title="c/io/fprintf"><span class="t-lines"><span>printf</span><span>fprintf</span><span>sprintf</span><span>snprintf</span><span>printf_s</span><span>fprintf_s</span><span>sprintf_s</span><span>snprintf_s</span></span></a></div><div><span class="t-lines"><span></span><span></span><span></span><span><span class="t-mark-rev t-since-c99">(C99)</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><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>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="fwprintf.html" title="c/io/fwprintf"><span class="t-lines"><span>wprintf</span><span>fwprintf</span><span>swprintf</span><span>wprintf_s</span><span>fwprintf_s</span><span>swprintf_s</span><span>snwprintf_s</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c95">(C95)</span></span><span><span class="t-mark-rev t-since-c95">(C95)</span></span><span><span class="t-mark-rev t-since-c95">(C95)</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><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></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="vfprintf.html" title="c/io/vfprintf"><span class="t-lines"><span>vprintf</span><span>vfprintf</span><span>vsprintf</span><span>vsnprintf</span><span>vprintf_s</span><span>vfprintf_s</span><span>vsprintf_s</span><span>vsnprintf_s</span></span></a></div><div><span class="t-lines"><span></span><span></span><span></span><span><span class="t-mark-rev t-since-c99">(C99)</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><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>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="vfwprintf.html" title="c/io/vfwprintf"><span class="t-lines"><span>vwprintf</span><span>vfwprintf</span><span>vswprintf</span><span>vwprintf_s</span><span>vfwprintf_s</span><span>vswprintf_s</span><span>vsnwprintf_s</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c95">(C95)</span></span><span><span class="t-mark-rev t-since-c95">(C95)</span></span><span><span class="t-mark-rev t-since-c95">(C95)</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><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></td></tr>
<p><br />
</p>
<tr class="t-nv-h2"><td colspan="5"> File positioning</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="ftell.html" title="c/io/ftell"><span class="t-lines"><span>ftell</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="fgetpos.html" title="c/io/fgetpos"><span class="t-lines"><span>fgetpos</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>fseek</span></span></strong></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="fsetpos.html" title="c/io/fsetpos"><span class="t-lines"><span>fsetpos</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="rewind.html" title="c/io/rewind"><span class="t-lines"><span>rewind</span></span></a></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Error handling</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="clearerr.html" title="c/io/clearerr"><span class="t-lines"><span>clearerr</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="feof.html" title="c/io/feof"><span class="t-lines"><span>feof</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="ferror.html" title="c/io/ferror"><span class="t-lines"><span>ferror</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="perror.html" title="c/io/perror"><span class="t-lines"><span>perror</span></span></a></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Operations on files</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="remove.html" title="c/io/remove"><span class="t-lines"><span>remove</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="rename.html" title="c/io/rename"><span class="t-lines"><span>rename</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="tmpfile.html" title="c/io/tmpfile"><span class="t-lines"><span>tmpfile</span><span>tmpfile_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="tmpnam.html" title="c/io/tmpnam"><span class="t-lines"><span>tmpnam</span><span>tmpnam_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><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/io/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><stdio.h></code>
</div></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl">
<td class="t-dcl-nopad"> <div><span class="mw-geshi c source-c"><span class="kw4">int</span> fseek<span class="br0">(</span> <a href="../io.html"><span class="kw883">FILE</span></a> <span class="sy2">*</span>stream, <span class="kw4">long</span> offset, <span class="kw4">int</span> origin <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td class="t-dcl-nopad"> </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl-sep"><td></td><td></td><td></td></tr>
</tbody></table>
<p>Sets the file position indicator for the file stream <code>stream</code> to the value pointed to by <code>offset</code>.
</p><p>If the <code>stream</code> is open in binary mode, the new position is exactly <code>offset</code> bytes measured from the beginning of the file if <code>origin</code> is <span class="t-lc"><a href="../io.html" title="c/io">SEEK_SET</a></span>, from the current file position if <code>origin</code> is <span class="t-lc"><a href="../io.html" title="c/io">SEEK_CUR</a></span>, and from the end of the file if <code>origin</code> is <span class="t-lc"><a href="../io.html" title="c/io">SEEK_END</a></span>. Binary streams are not required to support <span class="t-lc"><a href="../io.html" title="c/io">SEEK_END</a></span>, in particular if additional null bytes are output.
</p><p>If the <code>stream</code> is open in text mode, the only supported values for <code>offset</code> are zero (which works with any <code>origin</code>) and a value returned by an earlier call to <span class="t-lc"><a href="ftell.html" title="c/io/ftell">ftell</a></span> on a stream associated with the same file (which only works with <code>origin</code> of <span class="t-lc"><a href="../io.html" title="c/io">SEEK_SET</a></span>.
</p><p>If the <code>stream</code> is wide-oriented, the restrictions of both text and binary streams apply (result of <span class="t-lc"><a href="ftell.html" title="c/io/ftell">ftell</a></span> is allowed with SEEK_SET and zero offset is allowed from SEEK_SET and SEEK_CUR, but not SEEK_END).
</p><p>In addition to changing the file position indicator, <code>fseek</code> undoes the effects of <span class="t-lc"><a href="ungetc.html" title="c/io/ungetc">ungetc</a></span> and clears the end-of-file status, if applicable.
</p><p>If a read or write error occurs, the error indicator for the stream (<span class="t-lc"><a href="ferror.html" title="c/io/ferror">ferror</a></span>) is set and the file position is unaffected.
</p>
<table id="toc" class="toc"><tr><td><div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="fseek.html#Parameters"><span class="tocnumber">1</span> <span class="toctext">Parameters</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="fseek.html#Return_value"><span class="tocnumber">2</span> <span class="toctext">Return value</span></a></li>
<li class="toclevel-1 tocsection-3"><a href="fseek.html#Notes"><span class="tocnumber">3</span> <span class="toctext">Notes</span></a></li>
<li class="toclevel-1 tocsection-4"><a href="fseek.html#Example"><span class="tocnumber">4</span> <span class="toctext">Example</span></a></li>
<li class="toclevel-1 tocsection-5"><a href="fseek.html#References"><span class="tocnumber">5</span> <span class="toctext">References</span></a></li>
<li class="toclevel-1 tocsection-6"><a href="fseek.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/io/fseek&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> stream
</td>
<td> -
</td>
<td> file stream to modify
</td></tr>
<tr class="t-par">
<td> offset
</td>
<td> -
</td>
<td> number of characters to shift the position relative to origin
</td></tr>
<tr class="t-par">
<td> origin
</td>
<td> -
</td>
<td> position to which <code>offset</code> is added. It can have one of the following values: <span class="t-lc"><a href="../io.html" title="c/io">SEEK_SET</a></span>, <span class="t-lc"><a href="../io.html" title="c/io">SEEK_CUR</a></span>, <span class="t-lc"><a href="../io.html" title="c/io">SEEK_END</a></span>
</td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/io/fseek&action=edit&section=2" title="Edit section: Return value">edit</a>]</span> <span class="mw-headline" id="Return_value">Return value</span></h3>
<p><span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">0</span></span></span> upon success, nonzero value otherwise.
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/io/fseek&action=edit&section=3" title="Edit section: Notes">edit</a>]</span> <span class="mw-headline" id="Notes">Notes</span></h3>
<p>After seeking to a non-end position in a wide stream, the next call to any output function may render the remainder of the file undefined, e.g. by outputting a multibyte sequence of a different length.
</p><p>For text streams, the only valid values of <code>offset</code> are <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">0</span></span></span> (applicable to any <code>origin</code>) and a value returned by an earlier call to <span class="t-lc"><a href="ftell.html" title="c/io/ftell">ftell</a></span> (only applicable to <code>SEEK_SET</code>).
</p><p>POSIX allows seeking beyond the existing end of file. If an output is performed after this seek, any read from the gap will return zero bytes. Where supported by the filesystem, this creates a <i>sparse file</i>.
</p><p>POSIX also requires that fseek first performs <span class="t-lc"><a href="fflush.html" title="c/io/fflush">fflush</a></span> if there are any unwritten data (but whether the shift state is restored is implementation-defined).
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/io/fseek&action=edit&section=4" title="Edit section: Example">edit</a>]</span> <span class="mw-headline" id="Example">Example</span></h3>
<div class="t-example"><p> fseek with error checking
</p><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 <stdlib.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="coMULTI">/* Prepare an array of f-p values. */</span>
<span class="co2">#define SIZE 5</span>
<span class="kw4">double</span> A<span class="br0">[</span>SIZE<span class="br0">]</span> <span class="sy1">=</span> <span class="br0">{</span><span class="nu0">1</span>.,<span class="nu0">2</span>.,<span class="nu0">3</span>.,<span class="nu0">4</span>.,<span class="nu0">5</span>.<span class="br0">}</span><span class="sy4">;</span>
<span class="coMULTI">/* Write array to a file. */</span>
<a href="../io.html"><span class="kw883">FILE</span></a> <span class="sy2">*</span> fp <span class="sy1">=</span> <a href="fopen.html"><span class="kw819">fopen</span></a><span class="br0">(</span><span class="st0">"test.bin"</span>, <span class="st0">"wb"</span><span class="br0">)</span><span class="sy4">;</span>
<a href="fwrite.html"><span class="kw826">fwrite</span></a><span class="br0">(</span>A,<span class="kw4">sizeof</span><span class="br0">(</span><span class="kw4">double</span><span class="br0">)</span>,SIZE,fp<span class="br0">)</span><span class="sy4">;</span>
<a href="fclose.html"><span class="kw822">fclose</span></a> <span class="br0">(</span>fp<span class="br0">)</span><span class="sy4">;</span>
 
<span class="coMULTI">/* Read the f-p values into array B. */</span>
<span class="kw4">double</span> B<span class="br0">[</span>SIZE<span class="br0">]</span><span class="sy4">;</span>
fp <span class="sy1">=</span> <a href="fopen.html"><span class="kw819">fopen</span></a><span class="br0">(</span><span class="st0">"test.bin"</span>,<span class="st0">"rb"</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="coMULTI">/* Set the file position indicator in front of third f-p value. */</span>
<span class="kw1">if</span> <span class="br0">(</span>fseek<span class="br0">(</span>fp,<span class="kw4">sizeof</span><span class="br0">(</span><span class="kw4">double</span><span class="br0">)</span><span class="sy2">*</span><span class="nu0">2L</span>,<a href="../io.html"><span class="kw895">SEEK_SET</span></a><span class="br0">)</span> <span class="sy3">!</span><span class="sy1">=</span> <span class="nu0">0</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="kw1">if</span> <span class="br0">(</span><a href="ferror.html"><span class="kw877">ferror</span></a><span class="br0">(</span>fp<span class="br0">)</span><span class="br0">)</span>
<span class="br0">{</span>
<a href="perror.html"><span class="kw878">perror</span></a><span class="br0">(</span><span class="st0">"fseek()"</span><span class="br0">)</span><span class="sy4">;</span>
<a href="fprintf.html"><span class="kw852">fprintf</span></a><span class="br0">(</span><a href="../io.html"><span class="kw887">stderr</span></a>,<span class="st0">"fseek() failed in file %s at line # %d<span class="es1">\n</span>"</span>, __FILE__,__LINE__<span class="sy2">-</span><span class="nu0">5</span><span class="br0">)</span><span class="sy4">;</span>
<a href="../program/exit.html"><span class="kw488">exit</span></a><span class="br0">(</span><a href="../program/EXIT_status.html"><span class="kw494">EXIT_FAILURE</span></a><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="br0">}</span>
 
<span class="kw4">int</span> ret_code <span class="sy1">=</span> <a href="fread.html"><span class="kw825">fread</span></a><span class="br0">(</span>B,<span class="kw4">sizeof</span><span class="br0">(</span><span class="kw4">double</span><span class="br0">)</span>,<span class="nu0">1</span>,fp<span class="br0">)</span><span class="sy4">;</span> <span class="coMULTI">/* read one f-p value */</span>
<a href="fprintf.html"><span class="kw851">printf</span></a><span class="br0">(</span><span class="st0">"%.1f<span class="es1">\n</span>"</span>, B<span class="br0">[</span><span class="nu0">0</span><span class="br0">]</span><span class="br0">)</span><span class="sy4">;</span> <span class="coMULTI">/* print one f-p value */</span>
 
<a href="fclose.html"><span class="kw822">fclose</span></a><span class="br0">(</span>fp<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">return</span> <a href="../program/EXIT_status.html"><span class="kw493">EXIT_SUCCESS</span></a><span class="sy4">;</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">3.0</pre></div></div>
</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/io/fseek&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> 7.21.9.2 The fseek function (p: 336-337)
</li></ul>
</dd></dl>
<div class="t-ref-std-c99">
<ul><li> C99 standard (ISO/IEC 9899:1999):
</li></ul>
<dl><dd><ul><li> 7.19.9.2 The fseek function (p: 302-303)
</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> 4.9.9.2 The fseek function
</li></ul>
</dd></dl>
</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/io/fseek&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="fsetpos.html" title="c/io/fsetpos"> <span class="t-lines"><span>fsetpos</span></span></a></div></div>
</td>
<td> moves the file position indicator to a specific location in a file <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_fsetpos&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="fgetpos.html" title="c/io/fgetpos"> <span class="t-lines"><span>fgetpos</span></span></a></div></div>
</td>
<td> gets the file position indicator <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_fgetpos&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="ftell.html" title="c/io/ftell"> <span class="t-lines"><span>ftell</span></span></a></div></div>
</td>
<td> returns the current file position indicator <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_ftell&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="rewind.html" title="c/io/rewind"> <span class="t-lines"><span>rewind</span></span></a></div></div>
</td>
<td> moves the file position indicator to the beginning in a file <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_rewind&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td colspan="2"> <div class="t-dsc-see"><span><a href="../../cpp/io/c/fseek.html" title="cpp/io/c/fseek">C++ documentation</a></span> for <span class="t-dsc-see-tt"><span>fseek</span></span></div>
</td></tr>
</table></div>
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