/in/foo.cc: In function 'int main()':
/in/foo.cc:8:8: error: 'cin' was not declared in this scope
  while(cin>>name>>num>>price)
        ^
/in/foo.cc:15:2: error: 'cout' was not declared in this scope
  cout<<sum<<endl;
  ^
/in/foo.cc:15:13: error: 'endl' was not declared in this scope
  cout<<sum<<endl;
             ^