NAME

vfwscanf, vswscanf, vwscanf - wide-character formatted input of a stdarg argument list

SYNOPSIS

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

int vfwscanf(FILE *restrict stream, const wchar_t *restrict format,
       va_list arg);
int vswscanf(const wchar_t *restrict ws, const wchar_t *restrict format,
       va_list arg);
int vwscanf(const wchar_t *restrict format, va_list arg);


DESCRIPTION

^[CX] The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 defers to the ISO C standard.

The vfwscanf(), vswscanf(), and vwscanf() functions shall be equivalent to the fwscanf(), swscanf(), and wscanf() functions, respectively, except that instead of being called with a variable number of arguments, they are called with an argument list as defined in the <stdarg.h> header. These functions shall not invoke the va_end macro. As these functions invoke the va_arg macro, the value of ap after the return is unspecified.

RETURN VALUE

Refer to fwscanf() .

ERRORS

Refer to fwscanf() .

EXAMPLES

None.

APPLICATION USAGE

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

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

fwscanf() , the Base Definitions volume of IEEE Std 1003.1-2001, <stdarg.h>, <stdio.h>, <wchar.h>

CHANGE HISTORY

First released in Issue 6. Derived from the ISO/IEC 9899:1999 standard.