C#函数的简单使用

using System;
public class ATM
{
public static string UserName = "";
public static string UserPwd = "";
public static double Money = 0;
public static double Money1 = 0;
public static void Main()
{

Menu();
}
//主菜单
public static void Menu()
{
Console.WriteLine("----------请选择菜单-----------");
Console.WriteLine("1,\t注册");
Console.WriteLine("2,\t登录");
Console.WriteLine("3,\t退出");
string menu01 = Console.ReadLine();//得到的字符串类型
if(menu01 == "1")
{
Register();//注册页面
}
if(menu01 == "2")
{
Login();
}
}
//注册
public static void Register()
{
Console.WriteLine("------------------------------------");
Console.WriteLine("请选输入注册信息");
Console.WriteLine("------------------------------------");
Console.WriteLine("注册信息：请输入用户名");
UserName = Console.ReadLine();
if (UserName == "")
{
Console.WriteLine("用户名不能为空，注册失败");
Menu();
}
Console.WriteLine("注册信息：请输入密码");
UserPwd = Console.ReadLine();
Console.WriteLine("请再次输入密码");
string p = Console.ReadLine();
if (UserPwd == "" || p == "")
{
Console.WriteLine("密码不能为空，注册失败");
Register();
}
if (UserPwd != p)
{
Console.WriteLine("两次输入的密码不一致，注册失败");
Register();
}
if(UserName != null && UserPwd == p)
{
Console.WriteLine("注册成功");
Smenu();
}
}
//登录
public static void Login()
{
Console.WriteLine("------------------------------------");
Console.WriteLine("------------------------------------");
Console.WriteLine("请输入用户名");
UserName = Console.ReadLine();
Console.WriteLine("请输入密码");
UserPwd = Console.ReadLine();
if (UserName == ""|| UserPwd == "")
{
Console.WriteLine("用户名或密码不能为空，请重新登录！");
Login();
}else
{
Console.WriteLine("登录成功");
Smenu();
}
}
//登录成功菜单
public static void Smenu()
{
Console.WriteLine("------------------------------------");
Console.WriteLine("----------欢迎使用银行业务----------");
Console.WriteLine("------------------------------------");
Console.WriteLine("1,\t查询");
Console.WriteLine("2,\t存款");
Console.WriteLine("3,\t取款");
Console.WriteLine("4,\t利息查询");
Console.WriteLine("5,\t退出");
string s = Console.ReadLine();
if (s == "1")
{
Query();
}
if (s == "2")
{
Deposit();
}
if (s == "3")
{
TakeMoney();
}
if (s == "4")
{
Rate();
}
}
//查询
public static void Query()
{
Console.WriteLine("您的账户木有存款，请先存款！");
Smenu();
}
//存款
public static void Deposit()
{
Console.WriteLine("------------------------------------");
Console.WriteLine("----------存款业务----------");
Console.WriteLine("------------------------------------");
Console.WriteLine("1,\t定期");
Console.WriteLine("2,\t活期");
Console.WriteLine("3,\t投资");
Console.WriteLine("4,\t返回");
string d = Console.ReadLine();
if (d == "1")
{
DingQi();
}
if (d == "2")
{
HuoQi();
}
if (d == "3")
{
Ivest();
}
if (d == "4")
{
Smenu();
}
}
//定期
public static double DingQi()
{
Console.WriteLine("---------------------------------");
Console.WriteLine("-----------定期存款--------------");
Console.WriteLine("请输入存款期限,选择相应序号");
Console.WriteLine("1,\t三个月");
Console.WriteLine("2,\t六个月");
Console.WriteLine("3,\t一年");
Console.WriteLine("4,\t三年");
Console.WriteLine("5,\t五年");
string yeard = Console.ReadLine();
Console.WriteLine("请输入存款数,只接收100元面值的钞票,一次最多准许放入5000元钞票！");
Money1 = Convert.ToDouble(Console.ReadLine());
int m = (int)Money1;
if (m < 100)
{
Console.WriteLine("请取走现金！,您放入的现金少于100,请重新存款！");
DingQi();
}
if (m > 5000)
{
Console.WriteLine("请取走现金！,您放入的现金大于5000,请重新存款！");
DingQi();
}
if (yeard == "1")
{
Console.WriteLine("您本次定期存款是"+m+"元");
Smenu();
}
if (yeard == "2")
{
Console.WriteLine("您本次定期存款是"+m+"元");
Smenu();
}
if (yeard == "3")
{
Console.WriteLine("您本次定期存款是"+m+"元");
Smenu();
}
if (yeard == "4")
{
Console.WriteLine("您本次定期存款是"+m+"元");
Smenu();
}
if (yeard == "5")
{
Console.WriteLine("您本次定期存款是"+m+"元");
Smenu();
}
Console.WriteLine("返回存款业务");
Deposit();
return (Money1);
}
//活期
public static double HuoQi()
{
Console.WriteLine("---------------------------------");
Console.WriteLine("-----------活期存款--------------");
Console.WriteLine("1,\t进行活期存款");
Console.WriteLine("2,\t返回存款业务");
string h = Console.ReadLine();
if (h == "1")
{
Console.WriteLine("请输入存款数,只接收100元面值的钞票");
Money = Convert.ToDouble(Console.ReadLine());
int m1 = (int)Money;
if (m1 < 100 || m1 > 5000)
{
Console.WriteLine("请取走现金！,您放入的现金少于100或大于5000,请重新存款！");
HuoQi();
}else
{
Console.WriteLine("您本次活期存款是"+m1+"元");
Deposit();
}
}
if (h == "2")
{
Deposit();
}
return (Money);
}
//投资
public static void Ivest()
{
Console.WriteLine("------------------------------------");
Console.WriteLine("----------投资业务----------");
Console.WriteLine("------------------------------------");
Console.WriteLine("请选择投资年限");
Console.WriteLine("1,\t一年");
Console.WriteLine("2,\t三年");
Console.WriteLine("3,\t五年");
Console.WriteLine("4,\t十年");
Console.WriteLine("5,\t返回主菜单");
string i = Console.ReadLine();
double iv = (Money+Money1);;
if ((Money+Money1) < 100000)
{
Console.WriteLine("最低投资额为10万元，您的存款不足,请先存款！");
Smenu();
}
if (i == "1")
{
double t1 = iv*0.05;
Console.WriteLine("一年的投资利息为"+t1+"元");
Console.WriteLine("您本次投资了"+iv+"元");
}
if (i == "2")
{
double t2 = iv*0.05*3;
Console.WriteLine("三年的投资利息为"+t2+"元");
Console.WriteLine("您本次投资了"+iv+"元");
}
if (i == "3")
{
double t3 = iv*0.05*5;
Console.WriteLine("五年的投资利息为"+t3+"元");
Console.WriteLine("您本次投资了"+iv+"元");
}
if (i == "4")
{
double t4 = iv*0.05*10;
Console.WriteLine("十年的投资利息为"+t4+"元");
Console.WriteLine("您本次投资了"+iv+"元");
}
if (i == "5")
{
Deposit();
}
}
//取款
public static void TakeMoney()
{
Console.WriteLine("------------------------------------");
Console.WriteLine("----------取款业务----------");
Console.WriteLine("------------------------------------");
Console.WriteLine("请选择取款数额,每日最高可取2万元,定期取款请到柜台办理！");
Console.WriteLine("1,\t100");
Console.WriteLine("2,\t200");
Console.WriteLine("3,\t500");
Console.WriteLine("4,\t1000");
Console.WriteLine("5,\t2000");
Console.WriteLine("6,\t3000");
Console.WriteLine("7,\t5000");
Console.WriteLine("8,\t返回菜单");
string t = Console.ReadLine();
if (Money < 100.00)
{
Console.WriteLine("您的余额不足！");
}
if (t == "1")
{
if (Money > 100)
{
Console.WriteLine("您本次取款是100元");
Money = Money-100;
Smenu();
}
}
if (t == "2")
{
if (Money > 200)
{
Console.WriteLine("您本次取款是200元");
Money = Money-200;
Smenu();
}else
{
Console.WriteLine("您的余额不足！");
Smenu();
}
}
if (t == "3")
{
if (Money > 500)
{
Console.WriteLine("您本次取款是500元");
Money = Money-500;
Smenu();
}else
{
Console.WriteLine("您的余额不足！");
Smenu();
}
}
if (t == "4")
{
if (Money > 1000)
{
Console.WriteLine("您本次取款是1000元");
Money = Money-1000;
Smenu();
}else
{
Console.WriteLine("您的余额不足！");
Smenu();
}
}
if (t == "5")
{
if (Money > 2000)
{
Console.WriteLine("您本次取款是2000元");
Money = Money-2000;
Smenu();
}else
{
Console.WriteLine("您的余额不足！");
Smenu();
}
}
if (t == "6")
{
if (Money > 3000)
{
Console.WriteLine("您本次取款是3000元");
Money = Money-3000;
Smenu();
}else
{
Console.WriteLine("您的余额不足！");
Smenu();
}
}
if (t == "7")
{
if (Money > 5000)
{
Console.WriteLine("您本次取款是5000元");
Money = Money-5000;
Smenu();
}else
{
Console.WriteLine("您的余额不足！");
Smenu();
}
}
if (t == "8")
{
Console.WriteLine("返回菜单");
Smenu();
}
}
//利息查询
public static void Rate()
{
Console.WriteLine("------------------------------------");
Console.WriteLine("----------利息查询业务----------");
Console.WriteLine("------------------------------------");
Console.WriteLine("请选择存款年限");
Console.WriteLine("1,\t三个月");
Console.WriteLine("2,\t六个月");
Console.WriteLine("3,\t一年");
Console.WriteLine("4,\t三年");
Console.WriteLine("5,\t五年");
Console.WriteLine("6,\t返回存款业务");
string r = Console.ReadLine();
if (r == "1")
{
double l1 = Money1*0.0285/12*3;
Console.WriteLine("三个月的利息为"+l1+"元");
Smenu();
}
if (r == "2")
{
double l2 = Money1*0.0285/12*6;
Console.WriteLine("六个月的利息为"+l2+"元");
Smenu();
}
if (r == "3")
{
double l3 = Money1*0.0285;
Console.WriteLine("一年的利息为"+l3+"元");
Smenu();
}
if (r == "4")
{
double l4 = Money1*0.0285*3;
Console.WriteLine("三年的利息为"+l4+"元");
Smenu();
}
if (r == "5")
{
double l5 = Money1*0.0285*5;
Console.WriteLine("五年的利息为"+l5+"元");
Smenu();
}
if (r == "6")
{
Smenu();
}
}
}