Description

   The vwscanf function is equivalent to the wscanf function, except
   that instead of being called with a variable number of arguments,
   it is called with an argument list (ap) that has been initialized
   by va_start (and possibly with subsequent va_arg calls).

   For more information about format and conversion specifications
   and their corresponding arguments, see the "Understanding Input
   and Output" chapter of the VSI C RTL Reference Manual.

   See also wscanf.