vfwscanf(3S)vfwscanf(3S)NAME
vfwscanf: vfwscanf, vwscanf, vswscanf - convert formatted wide-character
input
SYNOPSIS
#include <stdarg.h>
#include <stdio.h>
#include <wchar.h>
int vfwscanf(FILE * restrict stream, const wchar_t * restrict format, va_list arg);
int vwscanf(const wchar_t * restrict format, va_list arg);
int vswscanf(const char * restrict s, const wchar_t * restrict format, va_list arg);
DESCRIPTIONvfwscanf reads from the stream stream.
vwscanf reads from the standard input stream stdin.
vswscanf reads from the wide-character string *s.
Each function reads wide-characters, interprets them according to a
format, and stores the results in its arguments.
The vwscanf(), vfwscanf() and vswscanf() functions are the same as
wscanf(), fwscanf() and swscanf() respectively, except that instead of
being called with a variable number of arguments, they are called with an
argument list as defined by <stdarg.h>.
These functions do not invoke the va_end macro.
EXAMPLES
The following example shows the use of the vfwscanf function.
#include <stdarg.h>
#include <stdio.h>
#include <wchar.h>
void input(wchar_t *format, ...);
{
va_list args;
va_start(args, format);
vfwscanf(stdin, format, args);
va_end(args);
}
NOTES
These functions are supported in n32 and 64 bit C Libraries for IRIX
6.5.18 and later versions as one of C99 features.
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vfwscanf(3S)vfwscanf(3S)SEE ALSOfwscanf(3S), stdarg(5), stdio(3S), widec(3S).
DIAGNOSTICS
These routines return the number of successfully matched and assigned
input items; this number can be zero in the event of an early matching
failure between an input character and the control string. If the input
ends before the first matching failure or conversion, EOF is returned.
In addition, all forms of fwscanf() may fail if:
[EILSEQ]
Input byte sequence does not form a valid character.
[EINVAL]
There are insufficient arguments.
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