PROLOG

       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of
       this interface may differ (consult the corresponding Linux  manual  page  for  details  of
       Linux behavior), or the interface may not be implemented on Linux.

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

       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 POSIX.1‐2008 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().

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

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

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       Section 2.5, Standard I/O Streams, fwscanf()

       The Base Definitions volume of POSIX.1‐2008, <stdarg.h>, <stdio.h>, <wchar.h>

COPYRIGHT

       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2013 Edition, Standard for Information Technology  --  Portable  Operating  System
       Interface  (POSIX),  The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc  and  The  Open  Group.   (This  is
       POSIX.1-2008  with  the  2013  Technical  Corrigendum  1  applied.)  In  the  event of any
       discrepancy between this version and the original IEEE and The Open  Group  Standard,  the
       original  IEEE  and The Open Group Standard is the referee document. The original Standard
       can be obtained online at http://www.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are most  likely  to  have
       been  introduced  during  the conversion of the source files to man page format. To report
       such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .