Re: is it possible to have functions with 0, 1, or 2 args?

Mark Summerfield <mark@qtrac.eu> wrote or quoted:

This does *not* work for the `va_test()` call. But if I supply 1 or 2 args
it works great.

  Here's an

SSCCE, a short self-contained correct compilable example, aka,
MWE - minimal working example.

  Some coders whip up these examples themselves for their post!

  It's a quick and dirty demo that can be compiled and run to
  show what's buggin' them.

  In this case, it's hella clear the macros are trippin', thinkin'
  the number of args is "1" when it's actually zilch, nada, zero.

  main.c

#include <stdio.h>

#define NARGS(...) NARGS_(__VA_ARGS__, 5, 4, 3, 2, 1, 0)
#define NARGS_(_5, _4, _3, _2, _1, N, ...) N
#define va_test(...) NARGS(__VA_ARGS__)

int main( void ){ printf( "%d\n", va_test() ); }

  transcript

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