41 接口的继承

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

namespace 接口
{
    class Program
    {
        static void Main(string[] args)
        {
            IBankAccount account = new Bank();//接口的多态
            Izhuanzhang youaccount = new Zk();
            account.cunkuan(10000);
            youaccount.cunkuan(30000);
            youaccount.zhuanzhang(account,25000);
            //account.qukuan(500);
             Console.WriteLine("我的余额为{0}",account.Blance);
             Console.WriteLine("你的余额为{0}", youaccount.Blance);
        }
    }
    class Bank:IBankAccount
    {
        private decimal blance;
        public decimal Blance
        {
            get
            {
                return blance;
            }
        }
        public void cunkuan(decimal amount)
        {
            blance += amount;
        }
        public bool qukuan(decimal amount)
        {
            if (blance >= amount)
            {
                blance -= amount;
                return true;
            }
            else
            {
                Console.WriteLine("余额不足，取款失败");
                return false;
            }
        }

}
}

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

namespace 接口
{
    interface IBankAccount
    {
        bool qukuan(decimal amount);//取款
        void cunkuan(decimal ck);//存款
        decimal Blance//余额
        {
            get;
        }
    }
}

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

namespace 接口
{
    interface Izhuanzhang:IBankAccount
    {
        bool zhuanzhang(IBankAccount destion, decimal amount);
    }
}

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

namespace 接口
{
    class Zk:Izhuanzhang
    {
        private decimal blance;
        public decimal Blance
        {
            get
            {
                return blance;
            }
        }
        public void cunkuan(decimal amount)
        {
            blance += amount;
        }
        public bool qukuan(decimal amount)
        {
            if (blance >= amount)
            {
                blance -= amount;
                return true;
            }
            else
            {
                Console.WriteLine("余额不足，取款失败");
                return false;
            }
        }
        public bool zhuanzhang(IBankAccount destion, decimal amount)
        {
            bool result = qukuan(amount);
            if (result == true)
            {
                destion.cunkuan(amount);
            }
            return result;
        }
}
}