test/variadicmacro.c

   1 #include <stdio.h>
   2
   3 #define m(o, ...)   fprintf(o, __VA_ARGS__)
   4 #define merr(...)   fprintf(stderr, __VA_ARGS__)
   5
   6 /* gnu-extension: name for the variadic arguments list */
   7 #define n(o, args...) fprintf(o, args)
   8 #define nerr(args...) fprintf(stderr, args)
   9
  10 int
  11 main(void)
  12 {
  13     m(stderr, "1 = %s\n", "one");
  14     merr("2 = %s\n", "two");
  15
  16     n(stderr, "3 = %s\n", "three");
  17     nerr("4 = %s\n", "four");
  18
  19     return 0;
  20 }
  21