1<html lang="en"> 2<head> 3<title>vfwprintf - Untitled</title> 4<meta http-equiv="Content-Type" content="text/html"> 5<meta name="description" content="Untitled"> 6<meta name="generator" content="makeinfo 4.13"> 7<link title="Top" rel="start" href="index.html#Top"> 8<link rel="up" href="Stdio.html#Stdio" title="Stdio"> 9<link rel="prev" href="vfscanf.html#vfscanf" title="vfscanf"> 10<link rel="next" href="vfwscanf.html#vfwscanf" title="vfwscanf"> 11<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> 12<meta http-equiv="Content-Style-Type" content="text/css"> 13<style type="text/css"><!-- 14 pre.display { font-family:inherit } 15 pre.format { font-family:inherit } 16 pre.smalldisplay { font-family:inherit; font-size:smaller } 17 pre.smallformat { font-family:inherit; font-size:smaller } 18 pre.smallexample { font-size:smaller } 19 pre.smalllisp { font-size:smaller } 20 span.sc { font-variant:small-caps } 21 span.roman { font-family:serif; font-weight:normal; } 22 span.sansserif { font-family:sans-serif; font-weight:normal; } 23--></style> 24<link rel="stylesheet" type="text/css" href="../cs.css"> 25</head> 26<body> 27<div class="node"> 28<a name="vfwprintf"></a> 29<p> 30Next: <a rel="next" accesskey="n" href="vfwscanf.html#vfwscanf">vfwscanf</a>, 31Previous: <a rel="previous" accesskey="p" href="vfscanf.html#vfscanf">vfscanf</a>, 32Up: <a rel="up" accesskey="u" href="Stdio.html#Stdio">Stdio</a> 33<hr> 34</div> 35 36<h3 class="section">4.70 <code>vfwprintf</code>, <code>vwprintf</code>, <code>vswprintf</code>—wide character format argument list</h3> 37 38<p><a name="index-vfwprintf-343"></a><a name="index-g_t_005fvfwprintf_005fr-344"></a><a name="index-vwprintf-345"></a><a name="index-g_t_005fvwprintf_005fr-346"></a><a name="index-vswprintf-347"></a><a name="index-g_t_005fvswprintf_005fr-348"></a><strong>Synopsis</strong> 39<pre class="example"> #include <stdio.h> 40 #include <stdarg.h> 41 #include <wchar.h> 42 int vwprintf(const wchar_t *<var>fmt</var>, va_list <var>list</var>); 43 int vfwprintf(FILE *<var>fp</var>, const wchar_t *<var>fmt</var>, va_list <var>list</var>); 44 int vswprintf(wchar_t *<var>str</var>, size_t <var>size</var>, const wchar_t *<var>fmt</var>, 45 va_list <var>list</var>); 46 47 int _vwprintf_r(struct _reent *<var>reent</var>, const wchar_t *<var>fmt</var>, 48 va_list <var>list</var>); 49 int _vfwprintf_r(struct _reent *<var>reent</var>, FILE *<var>fp</var>, 50 const wchar_t *<var>fmt</var>, va_list <var>list</var>); 51 int _vswprintf_r(struct _reent *<var>reent</var>, wchar_t *<var>str</var>, 52 size_t <var>size</var>, const wchar_t *<var>fmt</var>, va_list <var>list</var>); 53 54</pre> 55 <p><strong>Description</strong><br> 56<code>vwprintf</code>, <code>vfwprintf</code> and <code>vswprintf</code> are (respectively) variants 57of <code>wprintf</code>, <code>fwprintf</code> and <code>swprintf</code>. They differ only in allowing 58their caller to pass the variable argument list as a <code>va_list</code> object 59(initialized by <code>va_start</code>) rather than directly accepting a variable 60number of arguments. The caller is responsible for calling <code>va_end</code>. 61 62 <p><code>_vwprintf_r</code>, <code>_vfwprintf_r</code> and <code>_vswprintf_r</code> are reentrant 63versions of the above. 64 65 <p><br> 66<strong>Returns</strong><br> 67The return values are consistent with the corresponding functions. 68 69 <p><br> 70<strong>Portability</strong><br> 71POSIX-1.2008 with extensions; C99 (compliant except for POSIX extensions). 72 73 <p>Supporting OS subroutines required: <code>close</code>, <code>fstat</code>, <code>isatty</code>, 74<code>lseek</code>, <code>read</code>, <code>sbrk</code>, <code>write</code>. 75 76 <p><br> 77<strong>See Also</strong><br> 78<code>wprintf</code>, <code>fwprintf</code> and <code>swprintf</code>. 79 80 <p><br> 81 82 </body></html> 83 84