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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head> <meta name="generator" content= "HTML Tidy for Linux/x86 (vers 1 September 2005), see www.w3.org"> <title>strcspn</title> <link href="../cppreference.css" rel="stylesheet" type="text/css"></head><body><table> <tr> <td> <div class="body-content"> <div class="header-box"> <a href="../index.html">cppreference.com</a> > <a href= "index.html">Standard C String and Character</a> > <a href= "strcspn.html">strcspn</a> </div> <div class="name-format"> strcspn </div> <div class="syntax-name-format"> Syntax: </div> <pre class="syntax-box"> #include <string.h> size_t strcspn( const char *str1, const char *str2 );</pre> <p>The function strcspn() returns the index of the first character in <em>str1</em> that matches any of the characters in <em>str2</em>.</p> <div class="related-name-format"> Related topics: </div> <div class="related-content"> <a href="strpbrk.html">strpbrk</a><br> <a href="strrchr.html">strrchr</a><br> <a href="strstr.html">strstr</a><br> <a href="strtok.html">strtok</a> </div> </div> </td> </tr> </table></body></html>⌨️ 快捷键说明
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