cashreturn.cs

大话设计模式源码bigtalkdesignpattern_src

using System;
using System.Collections.Generic;
using System.Text;

namespace 商场管理软件
{
    //返利收费，继承CashSuper
    class CashReturn : CashSuper
    {
        private double moneyCondition = 0.0d;
        private double moneyReturn = 0.0d;
        //初始化时必须要输入返利条件和返利值，比如满300返100，则moneyCondition为300，moneyReturn为100
        public CashReturn(string moneyCondition, string moneyReturn)
        {
            this.moneyCondition = double.Parse(moneyCondition);
            this.moneyReturn = double.Parse(moneyReturn);
        }

        public override double acceptCash(double money)
        {
            double result = money;
            //若大于返利条件，则需要减去返利值
            if (money >= moneyCondition)
                result = money - Math.Floor(money / moneyCondition) * moneyReturn;

            return result;
        }
    }
}