/in/foo.cc:1:1: error: 'include' does not name a type
    1 | include <iostream>
      | ^~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:6:2: error: 'cin' was not declared in this scope
    6 |  cin >> m >> n;
      |  ^~~
/in/foo.cc:11:5: error: 'cout' was not declared in this scope
   11 |     cout << " ";
      |     ^~~~
/in/foo.cc:14:5: error: 'cout' was not declared in this scope
   14 |     cout << ch++;
      |     ^~~~
/in/foo.cc:16:4: error: 'cout' was not declared in this scope
   16 |    cout << endl;
      |    ^~~~
/in/foo.cc:16:12: error: 'endl' was not declared in this scope
   16 |    cout << endl;
      |            ^~~~