本人自己写的一个银行系统

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
//using System.Collections.Generic;

namespace ConsoleApplication19
{

    public class ColorInput
    {
        private int hConsoleHandle;

        private const int STD_OUTPUT_HANDLE = -11;

        [DllImport("kernel32.dll")]
        private static extern int GetStdHandle(int nStdHandle);

        [DllImport("kernel32.dll")]
        private static extern int SetConsoleTextAttribute(int hConsoleOutput,
        int wAttributes);

        // 构造方法
        public ColorInput()
        {
            hConsoleHandle = GetStdHandle(STD_OUTPUT_HANDLE);
        }

        //自己试出来的高亮颜色
        public enum Foreground
        {
            Green=10,
            Yellow,
            Blue,
            Red,
            Purple,
            Golder,
            White
        }

        public void SetTextColor(int color)
        {
            SetConsoleTextAttribute(hConsoleHandle, color);
        }

        public void ResetColor()
        {
            SetConsoleTextAttribute(hConsoleHandle, 7);
        }
    }//class

 

    class BankList
    {

        public int YuE = 2000;
        public int JiaoYi;

        public BankList()
        {
            // int YuE = 2000;

        }

        public BankList(int JiaoYi)
        {
            this.JiaoYi = JiaoYi;

 

        }

       

    }

 

    //登录
    public class Login
    {

        ColorInput colorText = new ColorInput();

        public Login()
        {
            //colorText.SetTextColor((int)ColorInput.Foreground.Blue);
            // Console.WriteLine("              欢迎使用符森的银行管理系统!请输入密码:");
            // Console.WriteLine("nihao");

         colorText.SetTextColor((int)ColorInput.Foreground.Green);
            Console.Write("/t/t欢迎使用");
            colorText.SetTextColor((int)ColorInput.Foreground.Purple);
            Console.Write("符森先生");
            colorText.SetTextColor((int)ColorInput.Foreground.Green);
            Console.Write("的银行管理系统!/n/n");

            Console.WriteLine("/t/t/t/t郑重声明");
             Console.WriteLine(@"   此系统纯属私有财产,知识产权属于个人所有,任何个人或集体不得未经本人允挪用，更不得转载翻刻
使用说明:请务必按照提示操作步骤进行,不得投机倒把,可以试试其他的功能，有不足的地方请登录我的博客wwww.fs13520.51.com互相谈论或者加上我的QQ:380727670：谢谢");
             colorText.SetTextColor((int)ColorInput.Foreground.Red);
            Console.WriteLine("是否已阅读次条款?/n");

             colorText.SetTextColor((int)ColorInput.Foreground.Yellow);
             Console.WriteLine("/t/t/t是【yes】 不是【no】");
             string inp = Console.ReadLine();

         L4: if (inp.ToString().ToLower() == "yes")
             {
                 Console.WriteLine("欢迎使用此系统");

                 colorText.SetTextColor((int)ColorInput.Foreground.Red);

            Console.WriteLine("请输入你的帐户密码:");
             }
            int code = int.Parse(Console.ReadLine());
            if (code == 13520)
            {

            }

            else
            {
                Console.WriteLine("你输入的密码错误!重新输入吧!提示下吧:13520");
                goto L4;

            }

            Random random = new Random();
            int a = random.Next(0, 9);
            int b = random.Next(0, 9);
            int c = random.Next(0, 9);
            int d = random.Next(0, 9);
        // Console.WriteLine("{0}{1}{2}{3}", a, b, c, d);

            L3: Console.WriteLine("请输入验证码{0}{1}{2}{3}:", a, b, c, d);

            int codeA = int.Parse(Console.ReadLine());
            if (codeA == a * 1000 + b * 100 + c * 10 + d)
            {
                AfterLogin ok = new AfterLogin();
                ok.Show();

            }

            else
            {

                Console.WriteLine("验证码错误笨蛋!请重新输入");
                goto L3;
            }

        }

 

    }

    //登录成功后
    public class AfterLogin
    {
        ColorInput colorText = new ColorInput();

        public void Show()
        {

            Console.WriteLine("        亲爱的!恭喜你登录成功");
        L1: Console.WriteLine("        当前用户是:6221881988806277774/n");
            colorText.SetTextColor((int)ColorInput.Foreground.Yellow);
            Console.WriteLine("/t1.取款                               2.查询/n/n");

            colorText.SetTextColor((int)ColorInput.Foreground.Golder);
   Console.WriteLine("/t3.存款/n/n");

   colorText.SetTextColor((int)ColorInput.Foreground.Red);
   Console.WriteLine("/t4.取卡");
            string input = Console.ReadLine();
            if (input == "3")
            {
                Console.WriteLine("请输入的币种:美元(1)>英镑(2)>人民币(3)");
                int inputA = int.Parse(Console.ReadLine());
                if (inputA == 1 || inputA == 2 || inputA == 3)
                {
                    Console.WriteLine("请输入存款金额");
                    int inputB = int.Parse(Console.ReadLine());
                    Console.WriteLine("恭喜你!存入成功");

                    BankList ban = new BankList(inputB);
                    BankList ban1 = new BankList(inputB);

                    Console.WriteLine("/n卡上余额为：" + ban1.YuE);//输出存入前的金额
                    Console.WriteLine("/n存入金额为：" + ban.JiaoYi);//输出用户存款金额
                    Console.WriteLine("/n存入后的卡上金额为：" + (ban1.YuE + ban.JiaoYi));//输出用户存款后的总金额
                    Console.WriteLine("/n谢谢光临,是否返回上一层看看还有什么需要的服务！(y/n)");
                    string sec = Console.ReadLine();
                    if (sec.ToString().ToLower() == "y")
                    {
                        goto L1;

                    }
                    if (sec.ToString().ToLower() == "n")
                    {
                        Console.WriteLine("那就推出了哟!");

                    }

                }

            }

            if (input == "1")
            {
                Console.WriteLine("请输入你要取的金额");
                int inputC = int.Parse(Console.ReadLine());
                BankList ban2 = new BankList();
                BankList ban = new BankList(inputC);
                Console.WriteLine("/n当前卡上余额为：" + (ban2.YuE - 10));//输出当前卡上余额
                Console.WriteLine("/n你要取的金额为：" + ban.JiaoYi);//输入用户的取款金额
                if (ban.YuE > inputC)//判断要余额大于交易金额才能进行交易
                {
                    Console.WriteLine("/n取款后的金额为：" + (ban.YuE - inputC));//输出用户交易成功后卡上金额

                    Console.WriteLine("/n谢谢光临,是否返回上一层看看还有什么需要的服务！(y/n)");
                    string sec = Console.ReadLine();
                    if (sec.ToString().ToLower() == "y")
                    {
                        goto L1;

                    }
                    if (sec.ToString().ToLower() == "n")
                    {
                        Console.WriteLine("那就推出了哟!");

                    }

                }
                else
                {
                    Console.WriteLine("/n对不起,你的卡上余额不足,交易失败!");

 

                }
            }

 

            if (input == "4")
            {

                Console.WriteLine("请在三十秒钟内取出磁卡......");

 

            }

            if (input == "2")
            {
                BankList cha = new BankList();
                Console.WriteLine("你目前卡上的余额是:{0}", cha.YuE);
                Console.WriteLine("是否需要其他的服务呢（y/n)");

                string sec = Console.ReadLine();
                if (sec.ToString().ToLower() == "y")
                {
                    goto L1;

                }
                if (sec.ToString().ToLower() == "n")
                {
                    Console.WriteLine("那就推出了哟!");

                }

            }

        }

    }

    public class Aply
    {

        static void Main()
        {
            Login Lo = new Login();
          
           

        }
    }

}