devdocs/c/program%2Fsig_types.html


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    <h1 id="firstHeading" class="firstHeading">SIGTERM, SIGSEGV, SIGINT, SIGILL, SIGABRT, SIGFPE</h1>            <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code>&lt;signal.h&gt;</code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl"> <td class="t-dcl-nopad"> <pre data-language="c">#define SIGTERM /*implementation defined*/</pre>
</td> <td class="t-dcl-nopad"> </td> <td class="t-dcl-nopad"> </td> </tr> <tr class="t-dcl"> <td class="t-dcl-nopad"> <pre data-language="c">#define SIGSEGV /*implementation defined*/</pre>
</td> <td class="t-dcl-nopad"> </td> <td class="t-dcl-nopad"> </td> </tr> <tr class="t-dcl"> <td class="t-dcl-nopad"> <pre data-language="c">#define SIGINT /*implementation defined*/</pre>
</td> <td class="t-dcl-nopad"> </td> <td class="t-dcl-nopad"> </td> </tr> <tr class="t-dcl"> <td class="t-dcl-nopad"> <pre data-language="c">#define SIGILL /*implementation defined*/</pre>
</td> <td class="t-dcl-nopad"> </td> <td class="t-dcl-nopad"> </td> </tr> <tr class="t-dcl"> <td class="t-dcl-nopad"> <pre data-language="c">#define SIGABRT /*implementation defined*/</pre>
</td> <td class="t-dcl-nopad"> </td> <td class="t-dcl-nopad"> </td> </tr> <tr class="t-dcl"> <td class="t-dcl-nopad"> <pre data-language="c">#define SIGFPE /*implementation defined*/</pre>
</td> <td class="t-dcl-nopad"> </td> <td class="t-dcl-nopad"> </td> </tr>  </table> <p>Each of the above macro constants expands to an integer constant expression with distinct values, which represent different signals sent to the program.</p>
<table class="t-dsc-begin"> <tr class="t-dsc-hitem"> <th> Constant </th> <th> Explanation </th>
</tr> <tr class="t-dsc"> <td> <code>SIGTERM</code> </td> <td> termination request, sent to the program </td>
</tr> <tr class="t-dsc"> <td> <code>SIGSEGV</code> </td> <td> invalid memory access (segmentation fault) </td>
</tr> <tr class="t-dsc"> <td> <code>SIGINT</code> </td> <td> external interrupt, usually initiated by the user </td>
</tr> <tr class="t-dsc"> <td> <code>SIGILL</code> </td> <td> invalid program image, such as invalid instruction </td>
</tr> <tr class="t-dsc"> <td> <code>SIGABRT</code> </td> <td> abnormal termination condition, as is e.g. initiated by <code><a href="abort" title="c/program/abort">abort()</a></code> </td>
</tr> <tr class="t-dsc"> <td> <code>SIGFPE</code> </td> <td> erroneous arithmetic operation such as divide by zero </td>
</tr> </table> <h3 id="References"> References</h3>  <ul>
<li> C17 standard (ISO/IEC 9899:2018): </li>
<ul><li> 7.14/3 Signal handling &lt;signal.h&gt; (p: 193) </li></ul>
<li> C11 standard (ISO/IEC 9899:2011): </li>
<ul><li> 7.14/3 Signal handling &lt;signal.h&gt; (p: 265) </li></ul>
<li> C99 standard (ISO/IEC 9899:1999): </li>
<ul><li> 7.14/3 Signal handling &lt;signal.h&gt; (p: 246) </li></ul>
<li> C89/C90 standard (ISO/IEC 9899:1990): </li>
<ul><li> 4.7 SIGNAL HANDLING &lt;signal.h&gt; </li></ul>
</ul>               <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <div><a href="signal" title="c/program/signal"> <span class="t-lines"><span>signal</span></span></a></div> </td> <td> sets a signal handler for particular signal <br> <span class="t-mark">(function)</span>  </td>
</tr> <tr class="t-dsc"> <td> <div><a href="raise" title="c/program/raise"> <span class="t-lines"><span>raise</span></span></a></div> </td> <td> runs the signal handler for particular signal <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/SIG_types" title="cpp/utility/program/SIG types">C++ documentation</a></span> for <span class=""><span>signal types</span></span> </td>
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