/in/foo.cc: In function 'int main()':
/in/foo.cc:4:1: error: only constructors take member initializers
    4 | {
      | ^
/in/foo.cc:4:1: error: expected identifier before '{' token
/in/foo.cc:6:11: error: expected ';' before 'cout'
    6 |  cin>>a>>b
      |           ^
      |           ;
    7 |  cout<<a+b<<endl;
      |  ~~~~      
/in/foo.cc:8:10: error: expected ';' before '}' token
    8 |  return 0
      |          ^
      |          ;
    9 | }
      | ~