Main.cc:1:1: error: 'include' does not name a type include ^ Main.cc: In function 'int main()': Main.cc:5:4: error: 'cin' was not declared in this scope cin>>a>>x>>y; ^ Main.cc:7:7: error: 'cout' was not declared in this scope cout<<"yes"; ^ Main.cc:10:7: error: 'cout' was not declared in this scope cout<<"no"; ^