test overloaded >> and << operators

What will be an ideal response?

```
cout << endl << "Enter an Element with atomic number, name, symbol,"
<< endl << "class, atomic weight and 7 shell electronic "
<< "configuration" << endl << "Example:" << endl
<< "=> 11 Sodium Na alkali_metal 22.9898 2 8 1 0 0 0 0"
<< endl << "=> ";
cin >> elem1;
cout << endl << "Element entered was: " << elem1;

// test accessors
cout << endl << elem1.getName() << " has an atomic number of "
<< elem1.getAtomicNumber() << endl << endl;

return 0;
}

```