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().

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 pointNo
Interrupt handlerNo
Signal handlerNo
ThreadYes

Related links

  • errno

    Global error variable

  • fscanf()

    Scan input from a stream

  • fwscanf()

    Scan wide-character input from a stream

  • scanf()

    Scan formatted input from stdin

  • sscanf()

    Scan input from a character string

  • swscanf()

    Scan input from a wide-character string

  • va_start()

    Start getting items from a variable argument list

  • vfscanf()

    Scan input from a file (varargs)

  • vscanf()

    Scan input from standard input (varargs)

  • vsscanf()

    Scan input from a string (varargs)

  • vswscanf()

    Scan input from a wide-character string (varargs)

  • vwscanf()

    Scan wide-character input from standard input (varargs)

  • wscanf()

    Scan formatted wide-character input from stdin