{
    const double yen = .0093;
    const double euro = 1.23;
    const double pound = 1.39;
    int amount = 1;
    char currency = ' ';
    cout<< "Please enter currency followed by yen or euros or pounds:\n";
    cin >> amount >> currency;

    if (currency == 'yen')
        cout << amount*0.0093;
    else if (currency == 'euro')
        cout << amount*1.23;
    else if (currency == 'pounds')
        cout << amount*1.39;
    else
        cout << "Sorry, I don't know a unit called '" << currency << "'\n";
}