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98 lines
3.9 KiB
HTML
98 lines
3.9 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<title>exit (The Red Hat newlib C Library)</title>
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<meta name="description" content="exit (The Red Hat newlib C Library)">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Document-Index.html#Document-Index" rel="index" title="Document Index">
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<link href="Document-Index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Stdlib.html#Stdlib" rel="up" title="Stdlib">
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<link href="getenv.html#getenv" rel="next" title="getenv">
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</head>
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<body lang="en">
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<a name="exit"></a>
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<div class="header">
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<p>
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Next: <a href="getenv.html#getenv" accesskey="n" rel="next">getenv</a>, Previous: <a href="_005f_005fenv_005flock.html#g_t_005f_005fenv_005flock" accesskey="p" rel="prev">__env_lock</a>, Up: <a href="Stdlib.html#Stdlib" accesskey="u" rel="up">Stdlib</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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</div>
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<hr>
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<a name="exit_002d_002d_002dend-program-execution"></a>
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<h3 class="section">2.17 <code>exit</code>—end program execution</h3>
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<a name="index-exit"></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 <stdlib.h>
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void exit(int <var>code</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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Use <code>exit</code> to return control from a program to the host operating
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environment. Use the argument <var>code</var> to pass an exit status to the
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operating environment: two particular values, <code>EXIT_SUCCESS</code> and
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<code>EXIT_FAILURE</code>, are defined in ‘<code>stdlib.h</code>’ to indicate success or
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failure in a portable fashion.
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</p>
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<p><code>exit</code> does two kinds of cleanup before ending execution of your
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program. First, it calls all application-defined cleanup functions
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you have enrolled with <code>atexit</code>. Second, files and streams are
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cleaned up: any pending output is delivered to the host system, each
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open file or stream is closed, and files created by <code>tmpfile</code> are
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deleted.
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</p>
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<br>
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<p><strong>Returns</strong><br>
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<code>exit</code> does not return to its caller.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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ANSI C requires <code>exit</code>, and specifies that <code>EXIT_SUCCESS</code> and
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<code>EXIT_FAILURE</code> must be defined.
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</p>
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<p>Supporting OS subroutines required: <code>_exit</code>.
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</p>
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<br>
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</html>
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