1 long long a = -1; 2 long long llabs (long long); 3 void abort (void); 4 int main()5 main() 6 { 7 if (llabs (a) != 1) 8 abort (); 9 return 0; 10 } llabs(long long b)11 long long llabs (long long b) 12 { 13 abort (); 14 } 15