1 #include <stdio.h> 2 3 int main()4 main() { 5 #if defined __GNUC__ || defined __NWCC__ 6 printf("%d\n", (int)sizeof(0? (void)0: 0)); 7 printf("%d\n", (int)sizeof(rand()? (void)0: 0)); 8 #else 9 printf("1\n"); 10 printf("1\n"); 11 #endif 12 } 13 14 15