/in/foo.cc: In function 'int main()':
/in/foo.cc:5:2: error: 'cin' was not declared in this scope
  cin>>A;
  ^~~
/in/foo.cc:5:2: note: suggested alternative: 'main'
  cin>>A;
  ^~~
  main
/in/foo.cc:7:3: error: 'cout' was not declared in this scope
   cout<<666;
   ^~~~
/in/foo.cc:10:3: error: 'cout' was not declared in this scope
   cout<<233;}
   ^~~~