/in/foo.cc:5:5: error: expected primary-expression before 'int'
    5 |     int x,y;
      |     ^~~
/in/foo.cc:4:12: error: expected ']' before 'int'
    4 | int main()[
      |            ^
      |            ]
    5 |     int x,y;
      |     ~~~     
/in/foo.cc:6:9: error: 'cin' does not name a type
    6 |         cin>>x>>y;
      |         ^~~
/in/foo.cc:7:9: error: 'cout' does not name a type
    7 |         cout<<x+y;
      |         ^~~~
/in/foo.cc:8:5: error: expected unqualified-id before 'return'
    8 |     return 0;
      |     ^~~~~~
/in/foo.cc:9:1: error: expected declaration before '}' token
    9 | }
      | ^