Before:

    // Print character type
    switch( tolower( charVar ) )
    {
       case 'a': cout << "a is a vowel" << endl;
                 break;
       case 'e': cout << "e is a vowel" << endl;
                 break;
       case 'i': cout << "i is a vowel" << endl;
                 break;
       case 'o': cout << "o is a vowel" << endl;
                 break;
       case 'u': cout << "u is a vowel" << endl;
                 break;
       default:  cout << charVar << " is a consonant" << endl;
    }