/// <summary>
/// 采用简单工厂来计算折扣率
/// </summary>
/// <param name="input">控制台输入的打折方式</param>
/// <returns>返回应付现金</returns>
public DiscountFather GetDis(string input)
{
DiscountFather dis = null;
switch (input)
{
case "1":
return(dis = new NoDiscount()); break;
case "2":
return(dis = new Discount2(0.9)); break;
case "3":
return(dis = new Discount3(500, 100)); break;
}
return(dis);
}
/// <summary>
/// 根据用户的选择返回一个打折对象
/// </summary>
/// <param name="realMoney">用户的选择</param>
/// <returns>返回父类对象，但是里面装的是子类对象</returns>
public Discount GetTotalMoney(string input)
{
Discount dc = null;
switch (input)
{
case "1":
dc = new DiscountNone();
break;
//此时需要GET
case "2":
dc = new Discount1(0.9);
break;
case "3":
dc = new Discount2(300, 50);
break;
}
return(dc);
}