#include <stdio.h>

#define MAKE_STRING(...) #__VA_ARGS__

int main()
{
   int a = 1, b = 2, c = 3, d = 4;

   printf("Die Variablen %s haben ", MAKE_STRING(a, b, c, d));
   printf("die Werte %i, %i, %i und %i.\n", a, b, c, d);

   return 0;
}