NAME

vfwprintf vwprintf vswprintf — wide-character formatted output of a stdarg argument list

SYNOPSIS

#include <stdarg.h>
#include <stdio.h>
#include <wchar.h>

int vwprintf(const wchar_t *format, va_list arg);
int vfwprintf(FILE *stream, const wchar_t *format, va_list arg);
int vswprintf(wchar_t *s, size_t n, const wchar_t *format,
    va_list arg);

DESCRIPTION

The vwprintf() , vfwprintf() and vswprintf() functions are the same as wprintf(3) , fwprintf(3) and swprintf(3) 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. However, as these functions do invoke the va_arg macro, the value of ap after the return is indeterminate.

RETURN VALUE

Refer to fwprintf(3) .

ERRORS

Refer to fwprintf(3) .

EXAMPLES

None.

APPLICATION USAGE

Applications using these functions should call va_end(ap) afterwards to clean up.

FUTURE DIRECTIONS

None.

SEE ALSO

fwprintf(3) , <stdarg.h> , <stdio.h> , <wchar.h> .

DERIVATION

Derived from the ISO/IEC 9899/AMD1:1995 (“ISO C90, Amendment 1”) (E).