c#第二章上机题1-4------MyBank

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

namespace MyBank
{
/// <summary>
/// 帐户类
/// </summary>
public class User
{
#region 成员变量
/// <summary>
/// 帐户姓名
/// </summary>
public string _name;

/// <summary>
/// 密码
/// </summary>
public string _password;

/// <summary>
/// 身份证号
/// </summary>
public string _identityNum;

/// <summary>
/// 帐户余额
/// </summary>
public double _balance;

/// <summary>
/// 帐户
/// </summary>
public string _account;
#endregion

#region 取款
/// <summary>
/// 取款操作
/// </summary>
/// <param name="money">要取的金额</param>
/// <returns>返回余额，输入有误返回-1</returns>
public double MinusMoney(double money)
{
if (money > 0)
{
if (money <= _balance)
{
_balance -= money;
return _balance;
}
else
{
return -1;
}

}
else
{
return -1;
}
}
#endregion

#region 存款
/// <summary>
/// 存款
/// </summary>
/// <param name="money">存款金额</param>
public double SaveMoney(double money)
{
if (money > 0)
{

_balance += money;
return _balance;
}
else
{
return -1;
}
}
#endregion
}
}

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

namespace MyBank
{
public class Bank
{
User user = new User();  //实例化User对象并赋值

User[] _userGroup = new User[3];

const string MESSAGE = "操作成功！";

#region 初始化帐户
/// <summary>
/// 初始化三个帐户
/// </summary>
public void Initial()
{
_userGroup[0] = new User();
_userGroup[0]._account = "179708064356";
_userGroup[0]._name = "王丽丽";
_userGroup[0]._password = "1234";
_userGroup[0]._identityNum = "210050619890808185";
_userGroup[0]._balance = 1000;

_userGroup[1] = new User();
_userGroup[1]._account = "179708064359";
_userGroup[1]._name = "张颖颖";
_userGroup[1]._password = "4321";
_userGroup[1]._identityNum = "510010619891231127";
_userGroup[1]._balance = 2000;

_userGroup[2] = new User();
_userGroup[2]._account = "179708064368";
_userGroup[2]._name = "刘华";
_userGroup[2]._password = "4567";
_userGroup[2]._identityNum = "410207198904051271";
_userGroup[2]._balance = 8000;
}
#endregion

#region 显示所有帐户信息
/// <summary>
/// 显示所有帐户的姓名
/// </summary>
public void ShowAllUser()
{
foreach (User userItem in _userGroup)
{
Console.WriteLine("帐户姓名:" + userItem._name + " 帐号：" + userItem._account + " 存款余额：" + userItem._balance);
//Console.WriteLine("帐户姓名:" + userItem
4000
._name);
}
}
#endregion

#region 显示菜单
/// <summary>
/// 显示菜单
/// </summary>
public void ShowCustomMenu()
{
string option = "";
do
{
Console.WriteLine("==================欢迎使用自动银行服务==================");
Console.WriteLine("1:开户 2:存款 3:取款 4:转账 5:查询余额 6:修改密码 0:退出");
Console.WriteLine("========================================================");
option = Console.ReadLine();
switch (option)
{
case "1":
CreateAccount();
continue;
case "2":
Deposit();
continue;
case "3":
WithDraw();
continue;
case "4":
continue;
case "5":
continue;
case "6":
continue;
case "0":
break;      //结束switch
default:
Console.WriteLine("输入无效！");
continue;
}

break;              //结束do-while循环
} while (true);
}
#endregion

#region 开户
/// <summary>
/// 开户
/// </summary>
public void CreateAccount()
{
//接受输入的数据
Console.WriteLine("请输入帐户姓名");
user._name = Console.ReadLine();
user._account = "179708064356";
Console.WriteLine("请输入帐户密码");
user._password = Console.ReadLine();
Console.WriteLine("请输入帐户身份证号");
user._identityNum = Console.ReadLine();
Console.WriteLine("请输入帐户存款金额");
user._balance = double.Parse(Console.ReadLine());

Console.WriteLine("帐号：{0}，帐户姓名：{1}，存款金额：{2} {3}", user._account, user._name, user._balance, MESSAGE);
//Console.ReadLine();
}
#endregion

#region 取款
/// <summary>
/// 取款
/// </summary>
public void WithDraw()
{
string account = "";             //帐号
string pwd;                      //密码

Console.WriteLine("请输入帐号:");
account = Console.ReadLine();
if (account.Length == 0)
{
Console.WriteLine("输入的帐号不正确！");
return;
}
// 新增：在3个帐户中查找指定的帐户
User user = CheckUserByAccount(account);
if (user == null)
{
Console.WriteLine("输入的帐号不正确！");
return;
}

//接收帐户密码，并验证
Console.WriteLine("请输入帐户密码:");
pwd = Console.ReadLine();

if (user._password != pwd)
{
Console.WriteLine("密码有误!");
return;
}

Console.WriteLine("请输入取款金额");
double money = double.Parse(Console.ReadLine());
double result = user.MinusMoney(money);
if (result == -1)
{
Console.WriteLine("取款失败");
}
else
{
Console.WriteLine("取款成功!当前余额:" + result);
}
}
#endregion

#region 存款
/// <summary>
/// 存款
/// </summary>
public void Deposit()
{
string account = "";               //账号
double money = 0;                //存款金额

Console.WriteLine("请输入账号:");
account = Console.ReadLine();
Console.WriteLine("请输入存入金额:");
money = double.Parse(Console.ReadLine());

User user;//账号111  name  password  yue  shenfenz
if ((user = CheckUserByAccount(account)) == null)
{
Console.WriteLine("您输入的账号不存在!");
}

if (user.SaveMoney(money) > 0)
{
Console.WriteLine(MESSAGE + "当前余额：" + user._balance);
}
else
{
Console.WriteLine("存款失败！");
}

}
#endregion

#region 判断用户是否存在
/// <summary>
/// 通过帐号判断用户是否存在
/// </summary>
/// <param name="account">账号111</param>
/// <returns>存在返回user对象，不存在返回null</returns>
private User CheckUserByAccount(string account)
{
foreach (User user in _userGroup)
{
if (user._account == account)
{
return user;//账号111  name  password  yue  shenfenz
}
}
return null;
}
#endregion
}
}

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

namespace MyBank
{
class Program
{
static void Main(string[] args)
{

Bank myBank = new Bank();

//开户
//myBank.CreateAccount();

//初始化数据
myBank.Initial();

Console.WriteLine("初始化帐户信息成功！");
myBank.ShowAllUser();

//菜单
myBank.ShowCustomMenu();

//取款
//myBank.WithDraw();

//显示所有帐户
//myBank.ShowAllUser();

Console.ReadLine();
}
}
}