vscanf

Synopsis

#include <stdarg.h>
#include <stdio.h>

int vfscanf(FILE *restrict stream,
            const char *restrict format,
            va_list arg);

int vscanf(const char *restrict format, va_list arg);

int vsscanf(const char *restrict s,
            const char *restrict format,
            va_list arg);

Status

Partially implemented

Conformance

IEEE Std 1003.1, 2017

Description

The vscanf(), vfscanf(), and vsscanf() functions shall be equivalent to the scanf(), fscanf(), and sscanf() 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 fscanf.

Errors

Refer to fscanf.

Tests

Untested

Known bugs

None