static void Main(string[] args)
{
Bill bill = new Bill(15.80, 0.06);
TippableBill tippable = new TippableBill(8.50, 0.06, 2.00);
bill.Pay();
tippable.Pay();
}
static void Main(string[] args)
{
Bill billy = new Bill();
billy.Subtotal = 15.80;
billy.TaxRate = 0.06;
Pay(billy);
TippableBill tippy = new TippableBill();
tippy.Subtotal = 8.50;
tippy.TaxRate = 0.06;
tippy.Tip = 2.00;
Pay(tippy);
}