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<a name="fgetpos_002d_002d_002drecord-position-in-a-stream-or-file"></a>
<h3 class="section">4.11 <code>fgetpos</code>&mdash;record position in a stream or file</h3>
<a name="index-fgetpos"></a>
<a name="index-_005ffgetpos_005fr"></a>
<p><strong>Synopsis</strong>
</p><div class="example">
<pre class="example">#include &lt;stdio.h&gt;
int fgetpos(FILE *restrict <var>fp</var>, fpos_t *restrict <var>pos</var>);
int _fgetpos_r(struct _reent *<var>ptr</var>, FILE *restrict <var>fp</var>, fpos_t *restrict <var>pos</var>);

</pre></div>
<p><strong>Description</strong><br>
Objects of type <code>FILE</code> can have a &ldquo;position&rdquo; that records how much
of the file your program has already read.  Many of the <code>stdio</code> functions
depend on this position, and many change it as a side effect.
</p>
<p>You can use <code>fgetpos</code> to report on the current position for a file
identified by <var>fp</var>; <code>fgetpos</code> will write a value
representing that position at <code>*<var>pos</var></code>.  Later, you can
use this value with <code>fsetpos</code> to return the file to this
position.
</p>
<p>In the current implementation, <code>fgetpos</code> simply uses a character
count to represent the file position; this is the same number that
would be returned by <code>ftell</code>.
</p>
<br>
<p><strong>Returns</strong><br>
<code>fgetpos</code> returns <code>0</code> when successful.  If <code>fgetpos</code> fails, the
result is <code>1</code>.  Failure occurs on streams that do not support
positioning; the global <code>errno</code> indicates this condition with the
value <code>ESPIPE</code>.
</p>
<br>
<p><strong>Portability</strong><br>
<code>fgetpos</code> is required by the ANSI C standard, but the meaning of the
value it records is not specified beyond requiring that it be
acceptable as an argument to <code>fsetpos</code>.  In particular, other
conforming C implementations may return a different result from
<code>ftell</code> than what <code>fgetpos</code> writes at <code>*<var>pos</var></code>.
</p>
<p>No supporting OS subroutines are required.
</p>
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