#include <stdio.h> static void f(int x){     printf("f(%d)\n", x);} int main(void){     int count = 0, i = 0;     for (; i < 3; ++i) {         printf("%d\n", i);         (void)(i || (f(i), ++count));     }     printf("count %d\n", count);     return count == 1 ? 0 : 1;}