第二天(继承只继承属性和方法，不继承数值！！)
（一）目的
完成借记卡账户类的设计以及编写，并调试，排错等；
（二）内容
1、借记卡账户方法的设计与编写
2、借记卡账户类中属性的设计与编写
3、借记卡账户类中构造函数的设计与编写
（三）指导
Card：借记卡账户类，继承自Account：
● 包含public属性：
2.1 ID：账号，long类型，只读唯一，范围是从到200000到299999；
2.2 BaseAccount：储蓄账户，Account类型，只读；
◆ 包含public方法：
2.2 Card：构造函数，参数为BaseAccount（必须先使用索引器查询出来）、date（string类型），必须调用基类的构造函数；
2.3 Swipe：刷卡，余额不足时可使用储蓄账户。
2.4 Query：重载基类的方法。
Program.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace 实训二
{
class Program
{
static void Main(string[] args)
{
//储蓄卡
Console.Write("请输入储蓄卡开户时间：");
DateTime dt = DateTime.Parse(Console.ReadLine());
Console.Write("请输入开户人姓名：");
string name = Console.ReadLine();
Console.Write("请输入身份证号：");
string idnumber = Console.ReadLine();
Console.Write("请输入期初存款：");
double money = double.Parse(Console.ReadLine());
Account a = new Account(name, idnumber, dt, money);//构造Account a
//借记卡
Console.Write("请输入借记卡开户时间：");
dt = DateTime.Parse(Console.ReadLine());
Console.Write("请输入开户人姓名：");
name = Console.ReadLine();
Console.Write("请输入身份证号：");
idnumber = Console.ReadLine();
Console.Write("请输入期初存款：");
money = double.Parse(Console.ReadLine());
Card b = new Card(a, name, idnumber, dt, money);//构造Card b account a作为参数
Console.Write("请输入存款金额：");
money = double.Parse(Console.ReadLine());
b.Deposit(money);//借记卡存钱
Console.Write("请输入刷卡金额：");
money = double.Parse(Console.ReadLine());
b.Swipe(money);//刷卡
b.Query();//借记卡清算
a.Query();//存储卡清算
Console.ReadKey();
}
}
}
Account.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace 实训二
{
public class Account
{
private long id = 100000;
public long ID
{
get { return id; }
}
private string name1;
public string Name
{
get { return name1; }
}
private string idnumber1;
public string IDNumber
{
get { return idnumber1; }
set
{
if (value.Length != 18)
{
throw new MyException("身份证必须要有18位！！！");
}
else
{
idnumber1 = value;
}
}
}
private DateTime createdate1;
public DateTime CreateDate//创建账户时间
{
get { return createdate1; }
}
private double money1;
public double Money
{
get { return money1; }
set { money1 = value; }
}
public Account(string name, string idnumber, DateTime dt)//重载
{
name1 = name;
idnumber1 = idnumber;
createdate1 = dt;
id++;
}
public Account(string name, string idnumber, DateTime dt, double money)//重载
{
name1 = name;
idnumber1 = idnumber;
money1 = money;
createdate1 = dt;
id++;
}
public virtual void Query()//可以被派生类重载 查询
{
Console.WriteLine("账户号" + "\t" + "卡类" + "\t" + "姓名" + "\t" + "开户日期" + "\t" + "{0,-18}" + "余额(元)", "身份证号");
Console.WriteLine(ID + "\t" + "储蓄卡" + "\t" + Name + "\t" + CreateDate.ToString("yyyy-MM-dd") + "\t" + "{0,-18}" + " " + Money.ToString("0.00"), IDNumber);
}
public double Deposit(double money)//存钱
{
Money += money;
return Money;
}
public double Withdraw(double money)//取钱
{
Money -= money;
return Money;
}
}
}
Card.cs:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace 实训二
{
class Card : Account
{
private long id = 200000;
public new long ID
{
get { return id; }
}
private Account b;
public Account BaseAccount
{
get { return b; }
}*/
public Card(Account BaseAccount, string name, string idnumber, DateTime dt, double money) : base(name, idnumber, dt, money)//导入的和继承的
{
b = BaseAccount;//b存放存储卡信息
id++;
}
public void Swipe(double money)//刷卡
{
double temp = Money - money;
if (temp < 0)
{
if (BaseAccount.Money + temp < 0)
{
Console.WriteLine("借记卡和储蓄卡中金额皆不足，刷卡失败");
}
else
{
Money = 0;//借记卡钱清0
BaseAccount.Withdraw(-temp);//多的钱去存储卡中取
Console.WriteLine("借记卡中金额不足，将从储蓄卡中扣除{0}元", -temp);
}
}
else
{
Money = temp;
}
}
public override void Query()//派生类重载
{
Console.WriteLine("账户号" + "\t" + "卡类" + "\t" + "姓名" + "\t" + "开户日期" + "\t" + "{0,-18}" + "余额(元)", "身份证号");//靠左对齐18个字符
Console.WriteLine(ID + "\t" + "借记卡" + "\t" + Name + "\t" + CreateDate.ToString("yyyy-MM-dd") + "\t" + "{0,-18}" + " " + Money.ToString("0.00"), IDNumber);
}
}
}