vfwscanf(3p) — Linux manual page

VFWSCANF(3P)            POSIX Programmer's Manual           VFWSCANF(3P)

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.1‐2017 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(3p).

ERRORS

       Refer to fwscanf(3p).

       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(3p)

       The Base Definitions volume of POSIX.1‐2017, stdarg.h(0p),
       stdio.h(0p), wchar.h(0p)

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic
       form from IEEE Std 1003.1-2017, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The
       Open Group Base Specifications Issue 7, 2018 Edition, Copyright
       (C) 2018 by the Institute of Electrical and Electronics
       Engineers, Inc and The Open Group.  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.opengroup.org/unix/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 .

IEEE/The Open Group               2017                      VFWSCANF(3P)

Pages that refer to this page: wchar.h(0p), vswscanf(3p), vwscanf(3p)

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