📄 vprintf_vfprintf_vsprintf.html
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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>vprintf, vfprintf, and vsprintf</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 I/O</a> > <a href= "vprintf_vfprintf_vsprintf.html">vprintf, vfprintf, and vsprintf</a> </div> <div class="name-format"> vprintf, vfprintf, and vsprintf </div> <div class="syntax-name-format"> Syntax: </div> <pre class="syntax-box"> #include <stdarg.h> #include <stdio.h> int vprintf( char *format, <strong>va_list</strong> arg_ptr ); int vfprintf( FILE *stream, const char *format, <strong>va_list</strong> arg_ptr ); int vsprintf( char *buffer, char *format, <strong>va_list</strong> arg_ptr );</pre> <p>These functions are very much like <a href= "printf.html">printf</a>(), <a href="fprintf.html">fprintf</a>(), and <a href="sprintf.html">sprintf</a>(). The difference is that the argument list is a pointer to a list of arguments. <strong>va_list</strong> is defined in stdarg.h, and is also used by (Other Standard C Functions) <a href= "../stdother/va_arg.html">va_arg</a>(). For example:</p> <pre class="example-code"> void error( char *fmt, ... ) { <strong>va_list</strong> args; va_start( args, fmt ); fprintf( stderr, "Error: " ); vfprintf( stderr, fmt, args ); fprintf( stderr, "\n" ); va_end( args ); exit( 1 ); } </pre> </div> </td> </tr> </table></body></html>⌨️ 快捷键说明
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