0_0_31435013_22645.cpp: In function 'int main()': 0_0_31435013_22645.cpp:6:14: error: 'n' was not declared in this scope scanf("%d",&n); ^ 0_0_31435013_22645.cpp:14:15: error: 'f' was not declared in this scope if(e==c&&d==f&&e>=0&&f>=0) ^