1<html lang="en"> 2<head> 3<title>viprintf - 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="vfwscanf.html#vfwscanf" title="vfwscanf"> 10<link rel="next" href="viscanf.html#viscanf" title="viscanf"> 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="viprintf"></a> 29<p> 30Next: <a rel="next" accesskey="n" href="viscanf.html#viscanf">viscanf</a>, 31Previous: <a rel="previous" accesskey="p" href="vfwscanf.html#vfwscanf">vfwscanf</a>, 32Up: <a rel="up" accesskey="u" href="Stdio.html#Stdio">Stdio</a> 33<hr> 34</div> 35 36<h3 class="section">4.72 <code>viprintf</code>, <code>vfiprintf</code>, <code>vsiprintf</code>, <code>vsniprintf</code>, <code>vasiprintf</code>, <code>vasniprintf</code>—format argument list (integer only)</h3> 37 38<p><a name="index-viprintf-355"></a><a name="index-g_t_005fviprintf_005fr-356"></a><a name="index-vfiprintf-357"></a><a name="index-g_t_005fvfiprintf_005fr-358"></a><a name="index-vsiprintf-359"></a><a name="index-g_t_005fvsiprintf_005fr-360"></a><a name="index-vsniprintf-361"></a><a name="index-g_t_005fvsniprintf_005fr-362"></a><a name="index-vasiprintf-363"></a><a name="index-g_t_005fvasiprintf_005fr-364"></a><a name="index-vasniprintf-365"></a><a name="index-g_t_005fvasniprintf_005fr-366"></a><strong>Synopsis</strong> 39<pre class="example"> #include <stdio.h> 40 #include <stdarg.h> 41 int viprintf(const char *<var>fmt</var>, va_list <var>list</var>); 42 int vfiprintf(FILE *<var>fp</var>, const char *<var>fmt</var>, va_list <var>list</var>); 43 int vsiprintf(char *<var>str</var>, const char *<var>fmt</var>, va_list <var>list</var>); 44 int vsniprintf(char *<var>str</var>, size_t <var>size</var>, const char *<var>fmt</var>, 45 va_list <var>list</var>); 46 int vasiprintf(char **<var>strp</var>, const char *<var>fmt</var>, va_list <var>list</var>); 47 char *vasniprintf(char *<var>str</var>, size_t *<var>size</var>, const char *<var>fmt</var>, 48 va_list <var>list</var>); 49 50 int _viprintf_r(struct _reent *<var>reent</var>, const char *<var>fmt</var>, 51 va_list <var>list</var>); 52 int _vfiprintf_r(struct _reent *<var>reent</var>, FILE *<var>fp</var>, 53 const char *<var>fmt</var>, va_list <var>list</var>); 54 int _vsiprintf_r(struct _reent *<var>reent</var>, char *<var>str</var>, 55 const char *<var>fmt</var>, va_list <var>list</var>); 56 int _vsniprintf_r(struct _reent *<var>reent</var>, char *<var>str</var>, 57 size_t <var>size</var>, const char *<var>fmt</var>, va_list <var>list</var>); 58 int _vasiprintf_r(struct _reent *<var>reent</var>, char **<var>str</var>, 59 const char *<var>fmt</var>, va_list <var>list</var>); 60 char *_vasniprintf_r(struct _reent *<var>reent</var>, char *<var>str</var>, 61 size_t *<var>size</var>, const char *<var>fmt</var>, va_list <var>list</var>); 62 63</pre> 64 <p><strong>Description</strong><br> 65<code>viprintf</code>, <code>vfiprintf</code>, <code>vasiprintf</code>, <code>vsiprintf</code>, 66<code>vsniprintf</code>, and <code>vasniprintf</code> are (respectively) variants of 67<code>iprintf</code>, <code>fiprintf</code>, <code>asiprintf</code>, <code>siprintf</code>, <code>sniprintf</code>, 68and <code>asniprintf</code>. They differ only in allowing their caller to pass 69the variable argument list as a <code>va_list</code> object (initialized by 70<code>va_start</code>) rather than directly accepting a variable number of 71arguments. The caller is responsible for calling <code>va_end</code>. 72 73 <p><code>_viprintf_r</code>, <code>_vfiprintf_r</code>, <code>_vasiprintf_r</code>, 74<code>_vsiprintf_r</code>, <code>_vsniprintf_r</code>, and <code>_vasniprintf_r</code> are 75reentrant versions of the above. 76 77 <p><br> 78<strong>Returns</strong><br> 79The return values are consistent with the corresponding functions: 80 81 <p><br> 82<strong>Portability</strong><br> 83All of these functions are newlib extensions. 84 85 <p>Supporting OS subroutines required: <code>close</code>, <code>fstat</code>, <code>isatty</code>, 86<code>lseek</code>, <code>read</code>, <code>sbrk</code>, <code>write</code>. 87 88 <p><br> 89 90 </body></html> 91 92