{
    // Variables

    char  start_input[8]; //this will either be planets, units, or start
    
    cout << "This will tell you the distance between two planets and how long it will take for you to get there.  You have your choice of units of measure.\n " << endl;

    cout << "1. For a list of supported locations type planets."  << endl;
    cout << "2. For a list of supported units type units." << endl;
    cout << "3. To start type start." << endl;

    cin >> start_input;
        if (strcmp ( start_input, "planets") ==0 )
            cout << endl << "Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto \n" << endl;
        else if (strcmp ( start_input, "units") ==0 )
---->>        cout << "meters kilometers parsecs AU seconds days months years \n" << endl;
        else if (strcmp ( start_input, "start") ==0 )
            cout << "start \n" << endl;
        else cout << "learn to read English \n" << endl;
return 0;
}