Variable argument lists.

[Cary Bates]

       Does anybody know (or care) why in ANSI standard C when 
       using a variable length argument list, there is no way to 
       determine how many arguments where passed into the function?
       Without such a feature it seems to me that the most of the 
       power of the variable argument list is wasted.  In VAX C there
       is a macro called va_count.  Why is such a macro missing
       from the ANSI standard?