vfwscanf()

Scan input from a file (varargs)

Synopsis:

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

int vfwscanf( FILE * fp,
              const wchar_t *format,
              va_list arg );

Arguments:

fp: The stream that you want to read from.
format: A wide-character string that specifies the format of the input. For more information, see scanf(). The formatting string determines what additional arguments you need to provide.
arg: A variable-argument list of the additional arguments, which you must have initialized with the va_start() macro.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The vfwscanf() function scans input from the file designated by fp, under control of the argument format.

The vfwscanf() function is the wide-character version of vfscanf(), and is a “varargs” version of fwscanf().

Note: The vfwscanf() function is generally considered unsafe for string handling; it's safer to use fgetws() to get a line of input and then use vswscanf() to process the input.

Returns:

The number of input arguments for which values were successfully scanned and stored, or EOF if the scanning reached the end of the input stream before storing any values.

Classification:

ANSI, POSIX 1003.1

Safety:
Cancellation point	No
Interrupt handler	No
Signal handler	No
Thread	Yes