Outputs a variable parameter list to the specified stream input/output file according to a format.

[Format]

#include <stdarg.h>

#include <stdio.h>

#include <wchar.h>

long vfwprintf(FILE *restrict fp, const char *restrict control, va_list arg);

[Parameters]

fp File pointer

control Pointer to wide string indicating format

arg Parameter list

[Return values]

Normal: Number of characters converted and output

Abnormal: Negative value

[Remarks]

The vfwprintf function is the wide-character version of the vfprintf function.