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<tr class="t-nv-h1"><td colspan="5"> Program termination</td></tr>
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
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<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="program/_Exit.html" title="c/program/ Exit"><span class="t-lines"><span>_Exit</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div></div></td></tr>
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<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="program/at_quick_exit.html" title="c/program/at quick exit"><span class="t-lines"><span>at_quick_exit</span></span></a></div><div><span class="t-lines"><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="program/EXIT_status.html" title="c/program/EXIT status"><span class="t-lines"><span>EXIT_SUCCESS</span><span>EXIT_FAILURE</span></span></a></div></div></td></tr>
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<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="program/getenv.html" title="c/program/getenv"><span class="t-lines"><span>getenv</span><span>getenv_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>
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<tr class="t-nv-h1"><td colspan="5"> Signals</td></tr>
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<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="program/raise.html" title="c/program/raise"><span class="t-lines"><span>raise</span></span></a></div></div></td></tr>
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<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="program/SIG_strategies.html" title="c/program/SIG strategies"><span class="t-lines"><span>SIG_DFL</span><span>SIG_IGN</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="program/SIG_ERR.html" title="c/program/SIG ERR"><span class="t-lines"><span>SIG_ERR</span></span></a></div></div></td></tr>
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<tr class="t-nv-h2"><td colspan="5"> Signal types</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="program/SIG_types.html" title="c/program/SIG types"><span class="t-lines"><span>SIGABRT</span><span>SIGFPE</span><span>SIGILL</span><span>SIGINT</span><span>SIGSEGV</span><span>SIGTERM</span></span></a></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> Non-local jumps</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="program/setjmp.html" title="c/program/setjmp"><span class="t-lines"><span>setjmp</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="program/longjmp.html" title="c/program/longjmp"><span class="t-lines"><span>longjmp</span></span></a></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Types</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="program/jmp_buf.html" title="c/program/jmp buf"><span class="t-lines"><span>jmp_buf</span></span></a></div></div></td></tr>
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<table id="toc" class="toc"><tr><td><div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="program.html#Program_termination"><span class="tocnumber">1</span> <span class="toctext">Program termination</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="program.html#Communicating_with_the_environment"><span class="tocnumber">2</span> <span class="toctext">Communicating with the environment</span></a></li>
<li class="toclevel-1 tocsection-3"><a href="program.html#Signals"><span class="tocnumber">3</span> <span class="toctext">Signals</span></a>
<ul>
<li class="toclevel-2"><a href="program.html#Signal_types"><span class="tocnumber">3.1</span> <span class="toctext">Signal types</span></a></li>
</ul>
</li>
<li class="toclevel-1 tocsection-4"><a href="program.html#Non-local_jumps"><span class="tocnumber">4</span> <span class="toctext">Non-local jumps</span></a>
<ul>
<li class="toclevel-2"><a href="program.html#Types"><span class="tocnumber">4.1</span> <span class="toctext">Types</span></a></li>
</ul>
</li>
<li class="toclevel-1 tocsection-5"><a href="program.html#References"><span class="tocnumber">5</span> <span class="toctext">References</span></a></li>
<li class="toclevel-1 tocsection-6"><a href="program.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/program&action=edit&section=1" title="Edit section: Program termination">edit</a>]</span> <span class="mw-headline" id="Program_termination">Program termination</span></h3>
<p>The following functions manage program termination and resource cleanup.
</p>
<table class="t-dsc-begin">
<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code><stdlib.h></code> </div>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/abort.html" title="c/program/abort"> <span class="t-lines"><span>abort</span></span></a></div></div>
</td>
<td> causes abnormal program termination (without cleaning up) <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/program/dsc_abort&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/exit.html" title="c/program/exit"> <span class="t-lines"><span>exit</span></span></a></div></div>
</td>
<td> causes normal program termination with cleaning up <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/program/dsc_exit&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/quick_exit.html" title="c/program/quick exit"> <span class="t-lines"><span>quick_exit</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div>
</td>
<td> causes normal program termination without completely cleaning up <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/program/dsc_quick_exit&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/_Exit.html" title="c/program/ Exit"> <span class="t-lines"><span>_Exit</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div></div>
</td>
<td> causes normal program termination without cleaning up <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/program/dsc_Exit&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/atexit.html" title="c/program/atexit"> <span class="t-lines"><span>atexit</span></span></a></div></div>
</td>
<td> registers a function to be called on <span class="t-lc"><a href="program/exit.html" title="c/program/exit">exit()</a></span> invocation <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/program/dsc_atexit&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/at_quick_exit.html" title="c/program/at quick exit"> <span class="t-lines"><span>at_quick_exit</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div>
</td>
<td> registers a function to be called on <a href="program/quick_exit.html" title="c/program/quick exit"><tt>quick_exit</tt></a> invocation <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/program/dsc_at_quick_exit&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/EXIT_status.html" title="c/program/EXIT status"> <span class="t-lines"><span>EXIT_SUCCESS</span><span>EXIT_FAILURE</span></span></a></div></div>
</td>
<td> indicates program execution execution status <br /> <span class="t-mark">(macro constant)</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/program/dsc_EXIT_status&action=edit">[edit]</a></span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/program&action=edit&section=2" title="Edit section: Communicating with the environment">edit</a>]</span> <span class="mw-headline" id="Communicating_with_the_environment">Communicating with the environment</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/system.html" title="c/program/system"> <span class="t-lines"><span>system</span></span></a></div></div>
</td>
<td> calls the host environment's command processor <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/program/dsc_system&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/getenv.html" title="c/program/getenv"> <span class="t-lines"><span>getenv</span><span>getenv_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>
<td> access to the list of environment variables <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/program/dsc_getenv&action=edit">[edit]</a></span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/program&action=edit&section=3" title="Edit section: Signals">edit</a>]</span> <span class="mw-headline" id="Signals">Signals</span></h3>
<p>Several functions and macro constants for signal management are provided.
</p>
<table class="t-dsc-begin">
<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code><signal.h></code> </div>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/signal.html" title="c/program/signal"> <span class="t-lines"><span>signal</span></span></a></div></div>
</td>
<td> sets a signal handler for particular signal <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/program/dsc_signal&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/raise.html" title="c/program/raise"> <span class="t-lines"><span>raise</span></span></a></div></div>
</td>
<td> runs the signal handler for particular signal <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/program/dsc_raise&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/sig_atomic_t.html" title="c/program/sig atomic t"> <span class="t-lines"><span>sig_atomic_t</span></span></a></div></div>
</td>
<td> the integer type that can be accessed as an atomic entity from an asynchronous signal handler <br /> <span class="t-mark">(typedef)</span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/SIG_strategies.html" title="c/program/SIG strategies"> <span class="t-lines"><span>SIG_DFL</span><span>SIG_IGN</span></span></a></div></div>
</td>
<td> defines signal handling strategies <br /> <span class="t-mark">(macro constant)</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/program/dsc_SIG_strategies&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/SIG_ERR.html" title="c/program/SIG ERR"> <span class="t-lines"><span>SIG_ERR</span></span></a></div></div>
</td>
<td> error was encountered <br /> <span class="t-mark">(macro constant)</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/program/dsc_SIG_ERR&action=edit">[edit]</a></span>
</td></tr>
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Signal_types"> Signal types </span></h5>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/SIG_types.html" title="c/program/SIG types"> <span class="t-lines"><span>SIGABRT</span><span>SIGFPE</span><span>SIGILL</span><span>SIGINT</span><span>SIGSEGV</span><span>SIGTERM</span></span></a></div></div>
</td>
<td> defines signal types <br /> <span class="t-mark">(macro constant)</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/program/dsc_SIG_types&action=edit">[edit]</a></span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/program&action=edit&section=4" title="Edit section: Non-local jumps">edit</a>]</span> <span class="mw-headline" id="Non-local_jumps">Non-local jumps</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code><setjmp.h></code> </div>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/setjmp.html" title="c/program/setjmp"> <span class="t-lines"><span>setjmp</span></span></a></div></div>
</td>
<td> saves the context <br /> <span class="t-mark">(function macro)</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/program/dsc_setjmp&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/longjmp.html" title="c/program/longjmp"> <span class="t-lines"><span>longjmp</span></span></a></div></div>
</td>
<td> jumps to specified location <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/program/dsc_longjmp&action=edit">[edit]</a></span>
</td></tr>
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Types"> Types </span></h5>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="program/jmp_buf.html" title="c/program/jmp buf"> <span class="t-lines"><span>jmp_buf</span></span></a></div></div>
</td>
<td> execution context type <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/program/dsc_jmp_buf&action=edit">[edit]</a></span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/program&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> 7.13 Nonlocal jumps <setjmp.h> (p: 262-264)
</li></ul>
</dd></dl>
<dl><dd><ul><li> 7.14 Signal handling <signal.h> (p: 265-267)
</li></ul>
</dd></dl>
<dl><dd><ul><li> 7.22 General utilities <stdlib.h> (p: 340-360)
</li></ul>
</dd></dl>
<dl><dd><ul><li> 7.31.7 Signal handling <signal.h> (p: 455)
</li></ul>
</dd></dl>
<dl><dd><ul><li> 7.31.12 General utilities <stdlib.h> (p: 456)
</li></ul>
</dd></dl>
<div class="t-ref-std-c99">
<ul><li> C99 standard (ISO/IEC 9899:1999):
</li></ul>
<dl><dd><ul><li> 7.13 Nonlocal jumps <setjmp.h> (p: 243-245)
</li></ul>
</dd></dl>
<dl><dd><ul><li> 7.14 Signal handling <signal.h> (p: 246-248)
</li></ul>
</dd></dl>
<dl><dd><ul><li> 7.20 General utilities <stdlib.h> (p: 306-324)
</li></ul>
</dd></dl>
<dl><dd><ul><li> 7.26.6 Signal handling <signal.h> (p: 401)
</li></ul>
</dd></dl>
<dl><dd><ul><li> 7.26.10 General utilities <stdlib.h> (p: 402)
</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> 4.6 NON-LOCAL JUMPS <setjmp.h>
</li></ul>
</dd></dl>
<dl><dd><ul><li> 4.7 SIGNAL HANDLING <signal.h>
</li></ul>
</dd></dl>
<dl><dd><ul><li> 4.10 GENERAL UTILITIES <stdlib.h>
</li></ul>
</dd></dl>
<dl><dd><ul><li> 4.13.5 Signal handling <signal.h>
</li></ul>
</dd></dl>
<dl><dd><ul><li> 7.13.7 General utilities <stdlib.h>
</li></ul>
</dd></dl>
</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/program&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 colspan="2"> <div class="t-dsc-see"><span><a href="../cpp/utility/program.html" title="cpp/utility/program">C++ documentation</a></span> for <span class="t-dsc-see-tt"><span>Program support utilities</span></span></div>
</td></tr>
</table></div>
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