谁会做这个题呀，求帮助

四、定义一个类实现如下接口：

using System;
namespace experiment3
{
    public interface IBankAccount
    {
        void SaveIn(decimal amount);
        bool WithDraw(decimal amount);
        decimal Balance
        {
            get;
        }
    }
   
}

    public interface IBankAccount
    {
        void SaveIn(decimal amount);
        bool WithDraw(decimal amount);
        decimal Balance { get; }

    }
    public class customer : IBankAccount
    {
        public void SaveIn(decimal amount)
        {
            this.Balance += amount;
        }
        public bool WithDraw(decimal amount)
        {
            if (amount <= Balance) { this.Balance -= amount;return true; }
            return false;
        }
        public decimal Balance { get; set; }
    }