devdocs/c/program%2Fquick_exit.html


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    <h1 id="firstHeading" class="firstHeading">quick_exit</h1>            <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code>&lt;stdlib.h&gt;</code> </th> <th> </th> <th> </th> </tr>   <tr class="t-dcl t-since-c11 t-until-c23"> <td><pre data-language="c">_Noreturn void quick_exit( int exit_code );</pre></td> <td class="t-dcl-nopad"> </td> <td>
<span class="t-mark-rev t-since-c11">(since C11)</span> <br><span class="t-mark-rev t-until-c23">(until C23)</span>
</td> </tr> <tr class="t-dcl t-since-c23"> <td> <pre data-language="c">[[noreturn]] void quick_exit( int exit_code );</pre>
</td> <td class="t-dcl-nopad"> </td> <td> <span class="t-mark-rev t-since-c23">(since C23)</span> </td> </tr>   </table> <p>Causes normal program termination to occur without completely cleaning the resources.</p>
<p>Functions passed to <code><a href="at_quick_exit" title="c/program/at quick exit">at_quick_exit</a></code> are called in reverse order of their registration. After calling the registered functions, calls <code><a href="http://en.cppreference.com/w/c/program/_Exit"><span class="kw489">_Exit</span></a><span class="br0">(</span>exit_code<span class="br0">)</span></code>.</p>
<p>Functions passed to <code><a href="atexit" title="c/program/atexit">atexit</a></code> or signal handlers passed to <code><a href="signal" title="c/program/signal">signal</a></code> are not called.</p>
<h3 id="Parameters"> Parameters</h3> <table class="t-par-begin"> <tr class="t-par"> <td> exit_code </td> <td> - </td> <td> exit status of the program </td>
</tr>
</table> <h3 id="Return_value"> Return value</h3> <p>(none)</p>
<h3 id="Example"> Example</h3> <div class="t-example"> <div class="c source-c"><pre data-language="c">#include &lt;stdlib.h&gt;
#include &lt;stdio.h&gt;
 
void f1(void)
{
    puts("pushed first");
    fflush(stdout);
}
 
void f2(void)
{
    puts("pushed second");
}
 
void f3(void)
{
    puts("won't be called");
}
 
int main(void)
{
    at_quick_exit(f1);
    at_quick_exit(f2);
    atexit(f3);
    quick_exit(0);
}</pre></div> <p>Output:</p>
<div class="text source-text"><pre data-language="c">pushed second
pushed first</pre></div> </div> <h3 id="References"> References</h3>  <ul>
<li> C17 standard (ISO/IEC 9899:2018): </li>
<ul><li> 7.22.4.7 The quick_exit function (p: 257) </li></ul>
<li> C11 standard (ISO/IEC 9899:2011): </li>
<ul><li> 7.22.4.7 The quick_exit function (p: 353) </li></ul>
</ul>       <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <div><a href="abort" title="c/program/abort"> <span class="t-lines"><span>abort</span></span></a></div> </td> <td> causes abnormal program termination (without cleaning up) <br> <span class="t-mark">(function)</span>  </td>
</tr> <tr class="t-dsc"> <td> <div><a href="atexit" title="c/program/atexit"> <span class="t-lines"><span>atexit</span></span></a></div> </td> <td> registers a function to be called on <code><a href="exit" title="c/program/exit">exit()</a></code> invocation <br> <span class="t-mark">(function)</span>  </td>
</tr> <tr class="t-dsc"> <td> <div><a href="at_quick_exit" 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> </td> <td> registers a function to be called on <strong class="selflink"><code>quick_exit</code></strong> invocation <br> <span class="t-mark">(function)</span>  </td>
</tr> <tr class="t-dsc"> <td colspan="2"> <span><a href="https://en.cppreference.com/w/cpp/utility/program/quick_exit" title="cpp/utility/program/quick exit">C++ documentation</a></span> for <code>quick_exit</code> </td>
</tr> </table>           <div class="_attribution">
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