vprintf

   Prints formatted output based on an argument list.

   This function is the same as the printf function except that
   instead of being called with a variable number of arguments, it
   is called with an argument list that has been initialized by the
   va_start macro (and possibly with subsequent va_arg calls) from
   <stdarg.h>.

   Format

     #include  <stdio.h>

     int vprintf  (const char *format, va_list ap);
 

Additional information available:

Arguments       Description     Return_Values