VFWSCANF
Section: POSIX Programmer's Manual (3P)
Updated: 2013
Index
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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 .
Index
- PROLOG
-
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- EXAMPLES
-
- APPLICATION USAGE
-
- RATIONALE
-
- FUTURE DIRECTIONS
-
- SEE ALSO
-
- COPYRIGHT
-
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