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95 lines
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95 lines
3.7 KiB
HTML
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<title>fclose (The Red Hat newlib C Library)</title>
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<a name="fclose"></a>
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<p>
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Next: <a href="fcloseall.html#fcloseall" accesskey="n" rel="next">fcloseall</a>, Previous: <a href="dprintf.html#dprintf" accesskey="p" rel="prev">dprintf</a>, Up: <a href="Stdio.html#Stdio" accesskey="u" rel="up">Stdio</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
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<a name="fclose_002d_002d_002dclose-a-file"></a>
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<h3 class="section">4.4 <code>fclose</code>—close a file</h3>
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<a name="index-fclose"></a>
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<a name="index-_005ffclose_005fr"></a>
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<p><strong>Synopsis</strong>
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</p><div class="example">
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<pre class="example">#include <stdio.h>
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int fclose(FILE *<var>fp</var>);
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int _fclose_r(struct _reent *<var>reent</var>, FILE *<var>fp</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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If the file or stream identified by <var>fp</var> is open, <code>fclose</code> closes
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it, after first ensuring that any pending data is written (by calling
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<code>fflush(<var>fp</var>)</code>).
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</p>
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<p>The alternate function <code>_fclose_r</code> is a reentrant version.
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The extra argument <var>reent</var> is a pointer to a reentrancy structure.
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</p>
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<br>
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<p><strong>Returns</strong><br>
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<code>fclose</code> returns <code>0</code> if successful (including when <var>fp</var> is
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<code>NULL</code> or not an open file); otherwise, it returns <code>EOF</code>.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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<code>fclose</code> is required by ANSI C.
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</p>
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<p>Required OS subroutines: <code>close</code>, <code>fstat</code>, <code>isatty</code>, <code>lseek</code>,
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<code>read</code>, <code>sbrk</code>, <code>write</code>.
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</p>
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