C#基础-031 模拟ATM机存取款系统

/*
 * 登录
 * 存款
 * 取款
 * 查询余额
 * 查询交易记录
 * 切换账户
 */
namespace ATM
{
    class Program
    {
        //用户数组和密码数组索引一样的表示为一组
        //用户数组
        static string[] usernameArr = { "admin", "yy" };
        //密码数组
        static string[] passwordArr = {"888888","123456" };
        //金额
        static int[] moneyArr = {10000,20000 };
        static string[] recordArr = { "", "" };
        //记录操作的账户索引
        static int index = 0;
        static void Main(string[] args)
        {
            while (true)
            {
                Console.Clear();
                string ret = Input("登录请按0");
                if (ret == "0")
                {
                    bool result = Login();            
                    if (result)
                    {
                        WelcomeUI();
                        Operation();
                    }
                }
            }
        }
        #region //欢迎页面
        static void WelcomeUI()
        {
            Console.Clear();
            Console.WriteLine("****************************");
            Console.WriteLine("****** 欢迎您{0}使用 *****",usernameArr[index]);
            Console.WriteLine("******     ATM机     *******");
            Console.WriteLine("****************************");
        }
        #endregion
        #region//功能项
        static void Operation()
        {
            Lable:
            string ret = Input("1.存款\n2.取款\n3.查询余额\n4.查询交易记录\n5.退出");
            switch (ret)
            {
                case "1":
                    int saveMoney = int.Parse(Input("请输入存款金额:"));
                    SaveMoney(saveMoney);
                    goto Lable;
                case "2":
                    int drawMoney = int.Parse(Input("请输入取款金额:"));
                    DrawMoney(drawMoney);
                    goto Lable;
                case "3":
                    QuaryLeftMoney();
                    goto Lable;
                case "4":
                    QuaryRecord();
                    goto Lable;
                case "5":
                    //Exit();
                    break;
                default:
                    Console.WriteLine("输入不合法");
                    goto Lable;
            }
        }
        #endregion
        #region //判断账户是否存在
        static bool IsContains(string username,string password)
        {
            for (int i = 0; i < usernameArr.Length; i++)
            {
                if (usernameArr[i] == username && passwordArr[i] == password)
                {
                    index = i;
                    return true;
                }
            }
            return false;
        }
        #endregion
        #region //登录
        static bool Login()
        {
            string username = string.Empty;
            string password = string.Empty;
            //记录登录失败的次数
            int count = 0;
            do
            {
                username = Input("请输入用户名");
                password = Input("请输入密码:");
                if (IsContains(username,password))
                {
                    return true;
                }
                else
                {
                    count++;
                    if (count>=3)
                    {
                        Console.WriteLine("对不起,您的账户已经被冻结！");
                        return false;
                    }
                    else
                    {
                        Console.WriteLine("对不起，您输入的账户名或密码错误，请重新输入");
                    }
                }
            } while (true);
        }
        #endregion
        #region//输入函数
        static string Input(string str)
        {
            Console.WriteLine(str);
            return Console.ReadLine();
        }
        #endregion
        #region //存款
        static void SaveMoney(int saveMoney)
        {
            moneyArr[index] += saveMoney;
            //记录一下交易记录
            WriteRecord(DateTime.Now +"存款"+saveMoney+"元人民币");

        }
        #endregion
        #region//取款
        static void DrawMoney(int drawMoney)
        {
            if (moneyArr[index]<drawMoney)
            {
                Console.WriteLine("您的余额不足");
                return;
            }
            moneyArr[index] -= drawMoney;
            //记录一下交易记录
            WriteRecord(DateTime.Now + "取款" + drawMoney + "元人民币");
        }
        #endregion
        #region//查询余额
        static void QuaryLeftMoney()
        {
            Console.WriteLine("您的账户余额为:{0}",moneyArr[index]);
        }
        #endregion
        #region//查询交易记录
        static void QuaryRecord()
        {
            Console.WriteLine("您的交易记录为:{0}", recordArr[index]);
        }
        #endregion
        #region //写交易记录
        static void WriteRecord(string str)
        {
            recordArr[index] += str+"\n";
        }
        #endregion
        #region //退出
        static void Exit()
        {
            Environment.Exit(0);
        }
        #endregion
    }
}