static void Main(string[] args)
{
BillHandlerBase billHandler500 = new BillHandler500();
BillHandlerBase billHandler200 = new BillHandler200();
BillHandlerBase billHandler100 = new BillHandle100();
BillHandlerBase billHandler25 = new BillHandle25();
BillHandlerBase coinHandler5 = new CoinHandler5();
BillHandlerBase coinHandler2 = new BillHandler2();
BillHandlerBase chainRoot = billHandler500;
billHandler500.SetNext(billHandler200);
billHandler200.SetNext(billHandler100);
billHandler100.SetNext(billHandler25);
billHandler25.SetNext(coinHandler5);
coinHandler5.SetNext(coinHandler2);
Console.WriteLine("587:");
chainRoot.Handle(587);
Console.WriteLine("==================");
Console.WriteLine("400:");
chainRoot.Handle(400);
Console.WriteLine("==================");
Console.WriteLine("402:");
chainRoot.Handle(402);
}
public void SetNext(BillHandlerBase next)
{
this.next = next;
}