static void Main3(string[] args)
{
//总计
float total = 0.0f;
total = CulTotal(600, 2);
CashContext cc = CashType(Type.Return);
//根据算法对象，计算最终要付多少钱
float result = cc.ContextInterface(total);
Console.WriteLine(result);
}
//==================================在下一版本版本中要取消客户端创建对象
/// <summary>
/// 根据优惠活动返回算法对象
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
static CashContext CashType(Type type)
{
CashContext cashContext = null;
switch (type)
{
case Type.Normal:
cashContext = new CashContext(new CashSuperNormal());
break;
case Type.Rebate:
cashContext = new CashContext(new CashSuperRebate(0.5f));
break;
case Type.Return:
cashContext = new CashContext(new CashSuperReturn(1000, 100));
break;
}
return(cashContext);
}