1 #include <stdio.h> 2 3 int foo()4 foo() { 5 return -128; 6 } 7 8 int main()9 main() { 10 int x; 11 12 if (-128 != (x = foo())) { 13 puts("impossible"); 14 } else { 15 printf(" ... %d !!! ...\n", x); 16 } 17 return 0; 18 } 19 20