/in/foo.cc: In function 'int main()':
/in/foo.cc:5:14: error: 'print' was not declared in this scope
  print("%d",a);
              ^
/in/foo.cc:10:2: error: 'cout' was not declared in this scope
  cout<<sum<<endl;
  ^~~~
/in/foo.cc:10:13: error: 'endl' was not declared in this scope
  cout<<sum<<endl;
             ^~~~