C#语言和数据库技术基础 MyBank
//User类using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{
class User
{
private string name;
public string Name
{
get { return name; }
set { name = value; }
}
private string password;
public string Password
{
get { return password; }
set { password = value; }
}
private string ident; //身份证号
public string Ident
{
get { return ident; }
set { ident = value; }
}
private double blance; //余额
public double Blance
{
get { return blance; }
set { blance = value; }
}
private string account; //账号
public string Account
{
get { return account; }
set { account = value; }
}
public double Minu(double money) //取款方法
{
if (money > 0)
{
if (money <= blance)
{
blance -= money;
return blance;
}
else
{
return -1;
}
}
else
{
return -1;
}
}
public double Snmmbobey(double money)
{
if (money > 0)
{
blance += money;
return blance;
}
else
{
return -1;
}
}
}
}
//Bank类using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{
class Bank
{
//实例化User对象并赋值
User user = new User();
User[] fell = new User[3];
public void Initial()
{
fell[0] = new User();
fell[0].Account = "112233";
fell[0].Name = "王丽丽";
fell[0].Password = "111111";
fell[0].Ident = "4561231254";
fell[0].Blance = 5000;
fell[1] = new User();
fell[1].Account = "445566";
fell[1].Name = "小轩";
fell[1].Password = "222222";
fell[1].Ident = "4561231254";
fell[1].Blance = 4000;
fell[2] = new User();
fell[2].Account = "778899";
fell[2].Name = "小华";
fell[2].Password = "333333";
fell[2].Ident = "4561231254";
fell[2].Blance = 3000;
}
public void Shu()
{
foreach(User userIe in fell)
{
Console.WriteLine("账户姓名{0} , 账号{1} , 身份证号{2} , 余额{3}",userIe.Name,userIe.Account,userIe.Ident,userIe.Blance);
}
}
public void Show()
{
string option = "";
do{
Console.WriteLine("=============欢迎使用自动银行服务==============");
Console.WriteLine("0:开户 1:存款 2:取款 3:转账 4:查询余额 5:修改密码 6:退出!");
Console.WriteLine("===========================================");
Console.WriteLine("请输入数字:");
option = Console.ReadLine();
switch(option)
{
case "0":
Cear();
continue;
case "1":
ck();
continue;
case "2":
With();
continue;
case "3":
Intput();
continue;
case "4":
sufor();
continue;
case "5":
Modif();
continue;
case "6":
pout();
break;
default:
Console.WriteLine("输入无效!");
continue;
}
break;
}while(true);
}
public void Cear()
{
//接收输入的数据
Console.WriteLine("请输入用户名:");
user.Name = Console.ReadLine();
user.Account = "123";
Console.WriteLine("请输入用户密码:");
user.Password = Console.ReadLine();
Console.WriteLine("请输入身份证号:");
user.Ident = Console.ReadLine();
Console.WriteLine("请输入用户余额:");
user.Blance = double.Parse(Console.ReadLine());
Console.WriteLine("账户:{0},用户名:{1},存款余额:{2} 创建成功!",user.Account,user.Name,user.Blance);
}
public void ck() //存款方法
{
string account = "";
double money = 0;
Console.WriteLine("请输入账号:");
account = Console.ReadLine();
Console.WriteLine("请输入金额:");
money = double.Parse(Console.ReadLine());
User user;
if((user=CheckUserByAccount(account))==null)
{
Console.WriteLine("您输入的账号不存在!");
}
if (user.Snmmbobey(money) > 0)
{
Console.WriteLine("当前余额为:" + user.Blance);
}
else
{
Console.WriteLine("存款失败!");
}
}
private User CheckUserByAccount(string account)
{
foreach(User user in fell)
{
if(user.Account.Equals(account))
{
return user;
}
}
return null;
}
private User CheckUser(string account, string pwd)
{
foreach(User user in fell )
{
if(user.Account.Equals(account)&&user.Password.Equals(pwd))
{
return user;
}
}
return null;
}
public void Modif() //修改密码
{
string accountName="";
string password = "";
Console.WriteLine("请输入账号:");
accountName = Console.ReadLine();
Console.WriteLine("请输入原密码:");
password = Console.ReadLine();
string newpwd1, newpwd2;
Console.WriteLine("请输入新密码:");
newpwd1 = Console.ReadLine();
Console.WriteLine("请再次输入密码:");
newpwd2 = Console.ReadLine();
if(Checkpwd(accountName,password,newpwd1,newpwd2)==true)
Console.WriteLine("账户密码修改成功!");
else
Console.WriteLine("账户密码修改失败!");
}
public bool Checkpwd(string accountName,string password,string newpwd1,string newpwd2)
{
User user=CheckUser(accountName,password);
if(user == null)
{
Console.WriteLine("当前账号不存在!");
return false;
}
if(newpwd1 != newpwd2)
{
Console.WriteLine("两次输入的账号密码不一致!");
return false;
}
else
{
user.Password =newpwd1;
return true;
}
}
//取款方法
public void With()
{
string account = ""; //账号
string pwd; //密码
Console.WriteLine("请输入账号:");
account = Console.ReadLine();
if(account.Length == 0)
{
Console.WriteLine("输入的账号不正确!");
return;
}
User user=CheckUserByAccount(account);
if (user == null)
{
Console.WriteLine("输入的账号不正确!");
return;
}
//接收账户密码,并验证
Console.WriteLine("请输入账户密码:");
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.Minu(money);
if (result == -1)
{
Console.WriteLine("取款失败!");
}
else
{
Console.WriteLine("取款成功!当前余额:"+result);
}
}
//转账
public void Intput()
{
Console.WriteLine("请输入转出账号:");
string fromAccount = Console.ReadLine();
Console.WriteLine("请输入转出账户密码:");
string frompwd = Console.ReadLine();
Console.WriteLine("请输入转入账号:");
string toAccount = Console.ReadLine();
Console.WriteLine("请输入转账金额:");
double money = double.Parse(Console.ReadLine());
double fbalance = 0, tbalance = 0;
int iRet = Transfer(fromAccount, frompwd, toAccount, money, ref fbalance, ref tbalance);
if (iRet == 1)
{
Console.WriteLine("转账成功,转出账号{0}余额为:{1},转入账号{2}余额为:{3}", fromAccount, fbalance, toAccount, tbalance);
}
else if (iRet == -1)
{
Console.WriteLine("转出账号或密码不正确!");
}
else if (iRet == -2)
{
Console.WriteLine("转入账号不正确!");
}
else if (iRet == -3)
{
Console.WriteLine("转账操作失败!");
}
}
///转出账号
///转出账号密码
///转入账号
///转出账户存款余额
///转入账号
///1:转账成功; -1:转出账号或密码不正确! ;
///-2;转入账号不正确!; -3:转账操作失败
private int Transfer(string fAccount, string fpwd, string tAccount, double money, ref double fBalance, ref double tBalance)
{
//检查转出账号和密码
User userfrom = CheckUser(fAccount, fpwd);
if (userfrom == null)
{
return -1;
}
//检查转入账号
User userTO = CheckUserByAccount(tAccount);
if (userTO == null)
{
return -2;
}
if (userfrom.Minu(money) == -1)
{
return -3;
}
//取得余额
fBalance = userfrom.Blance;
//存款
if (userTO.Snmmbobey(money) == -1)
{
return -3;
}
tBalance = userTO.Blance;
return 1;
}
//查询余额
public void sufor()
{
Console.WriteLine("请输入账号:");
string account = Console.ReadLine();
Console.WriteLine("请输入密码:");
string password = Console.ReadLine();
for (int i = 0; i < fell.Length;i++ )
{
if (fell[i].Account.Equals(account) && fell[i].Password.Equals(password))
{
Console.WriteLine("账户的余额为:" +string.Format("{0,-8:F2}", fell[i].Blance));
break;
}
else if(i==fell.Length-1)
{
Console.WriteLine("账号不存在! 请重新输入!");
return;
}
}
}
public void pout()
{
Console.WriteLine("退出!");
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Bank y = new Bank();
y.Initial();
Console.WriteLine("初始化账号信息成功!");
y.Shu();
y.Show();
Console.ReadLine();
}
}
}