Main.cc:1:1: error: 'include' does not name a type
include
^
Main.cc: In function 'int main()':
Main.cc:9:5: error: 'cin' was not declared in this scope
cin >> a >> op >> b;
^
Main.cc:30:5: error: 'cout' was not declared in this scope
cout << result << endl;
^
Main.cc:30:23: error: 'endl' was not declared in this scope
cout << result << endl;
^