'\" et

.TH VFWSCANF "3P" 2013 "IEEE/The Open Group" "POSIX Programmer's Manual"

.SH 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.

.SH NAME

vfwscanf,

vswscanf,

vwscanf

\(em wide-character formatted input of a stdarg argument list

.SH SYNOPSIS

.LP

.nf

#include <stdarg.h>

#include <stdio.h>

#include <wchar.h>

.P

int vfwscanf(FILE *restrict \fIstream\fP, const wchar_t *restrict \fIformat\fP,

    va_list \fIarg\fP);

int vswscanf(const wchar_t *restrict \fIws\fP, const wchar_t *restrict \fIformat\fP,

    va_list \fIarg\fP);

int vwscanf(const wchar_t *restrict \fIformat\fP, va_list \fIarg\fP);

.fi

.SH 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\(hy2008 defers to the ISO\ C standard.

.P

The

\fIvfwscanf\fR(),

\fIvswscanf\fR(),

and

\fIvwscanf\fR()

functions shall be equivalent to the

\fIfwscanf\fR(),

\fIswscanf\fR(),

and

\fIwscanf\fR()

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

.IR <stdarg.h> 

header. These functions shall not invoke the

.IR va_end

macro. As these functions invoke the

.IR va_arg

macro, the value of

.IR ap

after the return is unspecified.

.SH "RETURN VALUE"

Refer to

.IR "\fIfwscanf\fR\^(\|)".

.SH ERRORS

Refer to

.IR "\fIfwscanf\fR\^(\|)".

.LP

.IR "The following sections are informative."

.SH EXAMPLES

None.

.SH "APPLICATION USAGE"

Applications using these functions should call

.IR va_end (\c

.IR ap )

afterwards to clean up.

.SH RATIONALE

None.

.SH "FUTURE DIRECTIONS"

None.

.SH "SEE ALSO"

.IR "Section 2.5" ", " "Standard I/O Streams",

.IR "\fIfwscanf\fR\^(\|)"

.P

The Base Definitions volume of POSIX.1\(hy2008,

.IR "\fB<stdarg.h>\fP",

.IR "\fB<stdio.h>\fP",

.IR "\fB<wchar.h>\fP"

.SH 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 .