vwscanf_s.c File Reference

#include "safe_str_lib.h"

Include dependency graph for vwscanf_s.c:

Functions
EXPORT int	vwscanf_s (const wchar_t *restrict fmt, va_list ap)
	The vwscanf_s function reads a formatted wide string from stdin. More...

Function Documentation

vwscanf_s()

EXPORT int vwscanf_s	(	const wchar_t *restrict	fmt,
		va_list	ap
	)

The vwscanf_s function reads a formatted wide string from stdin.

Reaching the end of the stdin buffer is equivalent to reaching the end-of-file condition for vwscanf.

Remarks

SPECIFIED IN

• C11 standard (ISO/IEC 9899:2011): K.3.9.1.12 The vwscanf_s function (p: 637) http://en.cppreference.com/w/c/io/vwscanf

Parameters

[in]	fmt	format-control wide string.
[out]	ap	arguments to write to

Precondition

Neither stream nor fmt shall be a null pointer.

fmt shall not contain the conversion specifier n

None of the arguments corresponding to s is a null pointer. (not yet)

No encoding error shall occur.

c, s, and %[ conversion specifiers each expect two arguments (the usual pointer and a value of type rsize_t indicating the size of the receiving array, which may be 1 when reading with a lc into a single wide character) and except that the following errors are detected at runtime and call the currently installed constraint handler function.

Returns

Number of receiving arguments successfully assigned, or EOF if read failure occurs before the first receiving argument was assigned or if there is a runtime constraint violation.

Return values

>	0 on success, the number of arguments assigned
EOF	on error

See also

vswscanf_s(), wscanf_s(), vvwscanf_s(), vfwprintf_s()