问题描述：
用C#写一个ATM机相关程序！！（自己想的题目，其他语言可以直接改部分代码即可！）
大概也就分为开户、登录、存取款、查询、退出等等功能问题分析：
大概也就用到了数据库相关知识示例代码
主函数：
~~~ javascript
// Program.cs
// ATM项目中的Program类源文件
using System;
using System.Collections.Generic;
using System.Text;
namespace ATM
{
class Program
{
static void Main(string[] args)
{
Bank bank = new Bank("XYZ银行");
ATM atm = new ATM(bank);
atm.Start();
}
}
}银行相关业务逻辑：
// Bank.cs
// ATM项目中的Bank类源文件
using System;
using System.Collections;
using System.Text;
namespace ATM
{
class Bank
{
protected const int MaxAccountNum = 2048;
protected string name;
protected ArrayList accounts;
public string Name
{
get
{
return name;
}
}
public Bank(string name)
{
this.name = name;
accounts = new ArrayList();
}
public bool LoginAccount(string name, string password, out Account account)
{
account = null;
foreach (Account acc in accounts)
{
if (acc.Login(name, password))
{
account = acc;
return true;
}
}
return false;
}
public bool OpenAccount(string name, string password, out Account account)
{
account = null;
foreach (Account acc in accounts)
{
if (acc.Name == name)
return false;
}
account = new Account(name, password);
accounts.Add(account);
return true;
}
}
}用户相关业务逻辑
// Account.cs
// ATM项目中的Account类源文件
using System;
namespace ATM
{
class Account
{
protected string name;
protected string password;
protected decimal balance;
public decimal Balance
{
get
{
return balance;
}
}
public string Name
{
get
{
return name;
}
}
public Account(string name, string password)
{
this.balance = 0;
this.name = name;
this.password = password;
}
public bool Deposit(decimal amount)
{
if (amount <= 0)
return false;
balance += amount;
return true;
}
public bool Deposit(double amount)
{
return Deposit((decimal)amount);
}
public bool Deposit(int amount)
{
return Deposit((decimal)amount);
}
public bool Deposit(decimal amount, out decimal balance)
{
bool succeed = Deposit(amount);
balance = this.balance;
return succeed;
}
public bool Withdraw(decimal amount)
{
if (amount > balance || amount <= 0)
return false;
balance -= amount;
return true;
}
public bool Withdraw(double amount)
{
return Withdraw((decimal)amount);
}
public bool Withdraw(int amount)
{
return Withdraw((decimal)amount);
}
public bool Withdraw(decimal amount, out decimal balance)
{
bool succeed = Withdraw(amount);
balance = this.balance;
return succeed;
}
public bool ChangePassword(string oldPassword, string newPassword)
{
if (oldPassword != password)
return false;
password = newPassword;
return true;
}
public bool Login(string name, string password)
{
return (this.name == name && this.password == password);
}
}
}ATM机相关功能
// ATM.cs
// ATM项目中的ATM类源文件
using System;
using System.Collections.Generic;
using System.Text;
namespace ATM
{
class ATM
{
private const string quitCode = "20190506";
private Bank bank;
public ATM(Bank bank)
{
this.bank = bank;
}
public void Start()
{
while (true)
{
Console.Clear();
// 主界面
PrintLogo();
Console.WriteLine(" 1. 开户 ");
Console.WriteLine(" 2. 登录 ");
Console.WriteLine("----------------------------------------------");
Console.WriteLine("");
Console.Write("你的选择（回车结束）：");
string code = Console.ReadLine();
// quit system
if (code == quitCode)
return;
if (code == "1") // 开户
OpenAccount();
else if (code == "2") // 登陆
LoginAccount();
}
}
private void LoginAccount()
{
Console.Clear();
PrintLogo();
Console.WriteLine(" 请输入你的帐号的用户名和密码 ");
Console.WriteLine("----------------------------------------------");
Console.WriteLine("");
string name = Input("用户名（回车结束）：");
string password = Input("密码（回车结束）：");
// 登录帐号
Account account;
if (!bank.LoginAccount(name, password, out account))
{
Console.Write("登录错误，请检查用户名和密码是否正确。按Enter键继续...");
Console.Read();
}
else
{
ManageAccount(ref account);
}
}
private void OpenAccount()
{
Console.Clear();
PrintLogo();
Console.WriteLine(" 请输入你的帐号的用户名和密码 ");
Console.WriteLine("----------------------------------------------");
Console.WriteLine("");
string name = Input("用户名（回车结束）：");
string password = Input("密码（回车结束）：");
// 开户
Account account;
if (!bank.OpenAccount(name, password, out account))
{
Console.Write("开户错误，用户名可能已经存在。按Enter键继续...");
Console.Read();
}
else
{
Print("开户", 0, account);
Pause();
ManageAccount(ref account);
}
}
private void ManageAccount(ref Account account)
{
while (true)
{Console.Clear();
// 管理帐号界面
PrintLogo();
Console.WriteLine(" 1. 存款 ");
Console.WriteLine(" 2. 取款 ");
Console.WriteLine(" 3. 查询余额 ");
Console.WriteLine(" 4. 修改密码 ");
Console.WriteLine(" 5. 退出 ");
Console.WriteLine("----------------------------------------------");
Console.WriteLine("");
Console.Write("你的选择（回车结束）：");
string code = Console.ReadLine();
decimal amount;
bool succeed;
switch (code)
{
case "1":
amount = InputNumber("\n输入存款数目：");
succeed = account.Deposit(amount);
if (succeed)
{
Print("存入", amount, account);
}
else
{
Console.WriteLine("存款失败！");
}
Pause();
break;
case "2":
amount = InputNumber("\n输入取款数目：");
succeed = account.Withdraw(amount);
if (succeed)
{
Print("取出", amount, account);
}
else
{
Console.WriteLine("取款失败！");
}
Pause();
break;
case "3":
Print(account);
Pause();
break;
case "4":
string oldPassword = Input("当前密码（回车结束）：");
string newPassword = Input("新密码（回车结束）：");
succeed = account.ChangePassword(oldPassword, newPassword);
if (succeed)
Console.WriteLine("密码修改成功！");
else
Console.WriteLine("密码修改失败！");
Pause();
break;
case "5":
return;
default:
break;
}
}
}
private void PrintLogo()
{
Console.WriteLine("\n----------------------------------------------");
Console.WriteLine(" {0}自动取款机 用户第一 服务至上 ", bank.Name);
Console.WriteLine("----------------------------------------------");
}
private string Input(string prompt)
{
string str="";
int count = 0;
Console.Write(prompt);
if (prompt == "密码（回车结束）：")
{
while (true)
{
ConsoleKeyInfo ck = Console.ReadKey(true);
if (ck.Key != ConsoleKey.Enter)
{
if (ck.Key != ConsoleKey.Backspace)
{
str += ck.KeyChar.ToString();
Console.Write("*");
count++;
}
else
{
Console.Write("\b\b");
}
}
else {
Console.WriteLine();
break;
}
}
if (count != 6)
{
Console.Write("密码必须是六位数，请重新输入！");
int c = Console.Read();
str = Input("密码（回车结束）：");
}
}
else {
str = Console.ReadLine();
while (str == "")
{
Console.Write("不能为空，{0}", prompt);
str = Console.ReadLine();
}
} return str;
}
private decimal InputNumber(string prompt)
{
Console.Write(prompt);
string s = Console.ReadLine();
decimal amount = 0;
try
{
amount = Decimal.Parse(s);
}
catch (Exception) // 捕获任何异常
{
Console.Write("输入的数值格式不正确，请重新输入！"); // 提示错误
amount = InputNumber(prompt); // 递归调用InputNumber
}
return amount;
}
private void Pause()
{
Console.Write("按Enter键继续...");
Console.Read();
}
private void Print(string operation, decimal amount, Account account)
{
Console.WriteLine("---------------------------");
Console.WriteLine("姓名: {0}", account.Name);
Console.WriteLine("{0}: {1}", operation, amount);
Console.WriteLine("余额: {0}", account.Balance);
Console.WriteLine("---------------------------");
Console.WriteLine("{0}成功！", operation);
}
public void Print(Account account)
{
Console.WriteLine("---------------------------");
Console.WriteLine("姓名: {0}", account.Name);
Console.WriteLine("余额: {0}", account.Balance);
Console.WriteLine("---------------------------");
}
}
}
