devdocs/c/string%2Fbyte%2Fstrrchr.html


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    <h1 id="firstHeading" class="firstHeading">strrchr</h1>            <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code>&lt;string.h&gt;</code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl"> <td> <pre data-language="c">char *strrchr( const char *str, int ch );</pre>
</td> <td> (1) </td> <td class="t-dcl-nopad"> </td> </tr> <tr class="t-dcl t-since-c23"> <td> <pre data-language="c">/*QChar*/ *strrchr( /*QChar*/ *str, int ch );</pre>
</td> <td> (2) </td> <td> <span class="t-mark-rev t-since-c23">(since C23)</span> </td> </tr>  </table> <div class="t-li1">
<span class="t-li">1)</span> Finds the last occurrence of <code>ch</code> (after conversion to <code>char</code> as if by <code>(char)ch</code>) in the null-terminated byte string pointed to by <code>str</code> (each character interpreted as <code>unsigned char</code>). The terminating null character is considered to be a part of the string and can be found if searching for <code>'\0'</code>.</div> <div class="t-li1">
<span class="t-li">2)</span> Type-generic function equivalent to <span class="t-v">(1)</span>. Let <code>T</code> be an unqualified character object type. <ul>
<li> If <code>str</code> is of type <code>const T*</code>, the return type is <code>const char*</code>. </li>
<li> Otherwise, if <code>str</code> is of type <code>T*</code>, the return type is <code>char*</code>. </li>
<li> Otherwise, the behavior is undefined. </li>
</ul> If a macro definition of each of these generic functions is suppressed to access an actual function (e.g. if <code>(strrchr)</code> or a function pointer is used), the actual function declaration <span class="t-v">(1)</span> becomes visible.</div> <p>The behavior is undefined if <code>str</code> is not a pointer to a null-terminated byte string.</p>
<h3 id="Parameters"> Parameters</h3> <table class="t-par-begin"> <tr class="t-par"> <td> str </td> <td> - </td> <td> pointer to the null-terminated byte string to be analyzed </td>
</tr> <tr class="t-par"> <td> ch </td> <td> - </td> <td> character to search for </td>
</tr>
</table> <h3 id="Return_value"> Return value</h3> <p>Pointer to the found character in <code>str</code>, or null pointer if no such character is found.</p>
<h3 id="Example"> Example</h3> <div class="t-example"> <div class="c source-c"><pre data-language="c">#include &lt;string.h&gt;
#include &lt;stdio.h&gt;
 
int main(void)
{
    char szSomeFileName[] = "foo/bar/foobar.txt";
    char *pLastSlash = strrchr(szSomeFileName, '/');
    char *pszBaseName = pLastSlash ? pLastSlash + 1 : szSomeFileName;
    printf("Base Name: %s", pszBaseName);
}</pre></div> <p>Output:</p>
<div class="text source-text"><pre data-language="c">Base Name: foobar.txt</pre></div> </div> <h3 id="References"> References</h3>  <ul>
<li> C11 standard (ISO/IEC 9899:2011): </li>
<ul><li> 7.24.5.5 The strrchr function (p: 368-369) </li></ul>
<li> C99 standard (ISO/IEC 9899:1999): </li>
<ul><li> 7.21.5.5 The strrchr function (p: 331) </li></ul>
<li> C89/C90 standard (ISO/IEC 9899:1990): </li>
<ul><li> 4.11.5.5 The strrchr function </li></ul>
</ul>         <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <div><a href="strchr" title="c/string/byte/strchr"> <span class="t-lines"><span>strchr</span></span></a></div> </td> <td> finds the first occurrence of a character <br> <span class="t-mark">(function)</span>  </td>
</tr> <tr class="t-dsc"> <td> <div><a href="strpbrk" title="c/string/byte/strpbrk"> <span class="t-lines"><span>strpbrk</span></span></a></div> </td> <td> finds the first location of any character in one string, in another string <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/string/byte/strrchr" title="cpp/string/byte/strrchr">C++ documentation</a></span> for <code>strrchr</code> </td>
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