Mybank

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Threading.Tasks;
  6 
  7 namespace MyBank
  8 {
  9     class Bank
 10     {
 11         Card[] twos = new Card[100];
 12        public void fx() 
 13        {
 14            //第一张卡
 15            Card t1 = new Card();
 16            t1.kahao = "001";
 17            t1.mima = "001";
 18            t1.names = "小明";
 19            t1.yumoney = 100000;
 20            //第二张卡
 21            Card t2 = new Card();
 22            t2.kahao = "002";
 23            t2.mima = "002";
 24            t2.names = "小词";
 25            t2.yumoney = 004;
 26           
 27            twos[0] = t1;
 28            twos[1] = t2;
 29        }
 30        public void Show()
 31 
 32        {
 33            for (int i = 0; i < twos.Length; i++)
 34            {
 35                if (twos[i] != null)
 36                {
 37                    Console.WriteLine("持卡人:{0}	余额:{1}", twos[i].names, twos[i].yumoney);
 38                }
 39            }
 40            Console.WriteLine("=====================================================");
 41        }
 42 
 43       //欢迎界面
 44        public void huanying() 
 45        {
 46            bool flag = true;
 47            while (flag)
 48            {
 49                Console.WriteLine("
欢迎进入	某某某‘s 	的ATM系统
");
 50                Console.WriteLine("请选择功能模块，按照以下操作↓");
 51                Console.WriteLine("===============================欢迎使用自动银行服务============================= ");
 52                Console.WriteLine("1:开户	 2:存款	 3:取款	 4:查询余额	 5:转账	  6:修改密码	 7:退出");
 53                Console.WriteLine("================================================================================ ");
 54                string choice = Console.ReadLine();
 55                switch (choice)
 56                {
 57                    case "1":
 58                        //开户
 59                        kaihu();
 60                        break;
 61                    case "2":
 62                        //存款
 63                        MoneyIn();
 64                        break;
 65                    case "3":
 66                        //取款
 67                       MoneyOut();
 68                        break;
 69                    case "4":
 70                        //查询余额
 71                        chaxunMoney();
 72                        break;
 73                    case "5":
 74                        //转账
 75                        TransferMoney();
 76                        break;
 77                    case "6":
 78                        //修改密码
 79                        ModifyPwd();
 80                        break;
 81                    case"7":
 82                        //退出
 83                        Console.WriteLine("欢迎使用");
 84                        break;
 85                    default:
 86                        Console.WriteLine("您输入的有误,请从新输入！");
 87                        Console.WriteLine("");
 88                        break;
 89                }
 90                Console.ReadLine();
 91            }
 92            
 93        }
 94        //开户
 95        public void kaihu()
 96        {
 97            Console.WriteLine("这里是开户功能");
 98            Console.WriteLine("请输入账号：");
 99            string zh = Console.ReadLine();
100            foreach (Card item in twos)
101            {
102                if (item.kahao.Equals(zh))
103                {
104                    Console.WriteLine("已有账号,请从新输入：");
105                    zh = Console.ReadLine();
106                }
107                Console.WriteLine("请输入密码：");
108                string kaPwd = Console.ReadLine();
109                Console.WriteLine("请输入预存款金额：");
110                double money = double.Parse(Console.ReadLine());
111                Card two = new Card();
112                two.kahao = zh;
113                two.mima = kaPwd;
114                two.yumoney = money;
115                for (int i = 0; i < twos.Length; i++)
116                {
117                    if (twos[i] == null)
118                    {
119                        twos[i] = two;
120                        Console.WriteLine("恭喜您,开户成功,您的卡号是{0}", zh);
121                        break; 
122                    } 
123                }
124                break;
125            }
126            Console.WriteLine("
是否返回主页面？(y/n)");
127           char  num=char.Parse(Console.ReadLine());
128            switch (num)
129            {
130                case 'y':
131                    huanying();
132                    break;
133                case 'n':
134                    Console.WriteLine("欢迎下次光临");
135                    
136                    break;
137            }
138            }
139            
140        //存款
141        public void MoneyIn()
142        {
143            Console.WriteLine("欢迎进入存款区");
144            Console.WriteLine("请输入账号");
145            string zh2 = Console.ReadLine();
146            bool flag = false;
147            foreach (Card item in twos)
148            {
149                if (item != null)
150                {
151                    if (item.kahao.Equals(zh2))
152                    {
153                        flag = true;
154                        Console.WriteLine("请输入存款金额");
155                        double money = double.Parse(Console.ReadLine());
156                        item.yumoney += money;
157                        Console.WriteLine("存款成功,当前余额为:{0}", item.yumoney);
158                        
159                        break;
160                    }
161                }
162            }
163            if (flag == false)
164            {
165                Console.WriteLine("卡号不存在");
166            }
167            Console.WriteLine("
是否返回主页面？(y/n)");
168            char num = char.Parse(Console.ReadLine());
169            switch (num)
170            {
171                case 'y':
172                    huanying();
173                    break;
174                case 'n':
175                    Console.WriteLine("欢迎下次光临！凸^-^凸");
176 
177                    break;
178            }
179        }
180        //取款
181        public void MoneyOut() 
182        {
183            Console.WriteLine("请输入账号");
184            string account = Console.ReadLine();
185            bool kh = false;
186            foreach (Card item in twos)
187            {
188                if (item != null)
189                {
190                    if (item.kahao.Equals(account))
191                    {
192                        kh = true;
193                        Console.WriteLine("请输入密码");
194                        string pwd2 = Console.ReadLine();
195                        if (item.mima.Equals(pwd2))
196                        {
197                            Console.WriteLine("请输入取款金额");
198                            double money = double.Parse(Console.ReadLine());
199                            while (money > item.yumoney)
200                            {
201                                Console.WriteLine("余额不足，请重新输入取款金额");
202                                money = double.Parse(Console.ReadLine());
203                            }
204                            item.yumoney -= money;
205                            Console.WriteLine("取款成功");
206                            Console.WriteLine("当前卡内余额{0}", item.yumoney);
207                            break;
208 
209 
210                        }
211                        else
212                        {
213                            Console.WriteLine("密码错误");
214                        }
215                    }
216                }
217            }
218            if (kh == false)
219            {
220                Console.WriteLine("没有该卡号");
221            }
222            Console.WriteLine("
是否返回主页面？(y/n)");
223           char  num=char.Parse(Console.ReadLine());
224            switch (num)
225            {
226                case 'y':
227                    huanying();
228                    break;
229                case 'n':
230                    Console.WriteLine("欢迎下次光临！");
231                  
232                    break;
233            }
234        }
235        //查询余额
236        public void chaxunMoney()
237        {
238            bool flag = false;
239            Console.WriteLine("请输入卡号");
240            string account = Console.ReadLine();
241            Console.WriteLine("请输入密码");
242            string pwd = Console.ReadLine();
243            foreach (Card item in twos)
244            {
245                if (item!=null)
246                {  
247                    if (item.kahao.Equals(account) && item.mima.Equals(pwd))
248                    {
249                        flag=true;
250                        Console.WriteLine("用户名是{0}的账户余额是{1}", item.names, item.yumoney);
251                        break;
252                    } 
253                }    
254            }
255                     if (flag==false)
256                            {
257                                 Console.WriteLine("账号有误,请从新输入");
258                           }
259             Console.WriteLine("
是否返回主页面？(y/n)");
260           char  num=char.Parse(Console.ReadLine());
261            switch (num)
262            {
263                case 'y':
264                    huanying();
265                    break;
266                case 'n':
267                    Console.WriteLine("欢迎下次光临！");
268                   
269                    break;
270            }
271        }
272       
273        //转账
274        public void TransferMoney()
275        {
276            Console.WriteLine("请输入转出卡卡号");
277            string zc = Console.ReadLine();
278            bool fromIsOrNot = false;
279            bool toIsOrNot = false;
280             foreach (Card item in twos)
281            {
282                if (item!=null&&item.kahao.Equals(zc))
283                {
284                    fromIsOrNot = true;
285 
286            Console.WriteLine("请输入转出卡卡密码");
287            string pwdFrom = Console.ReadLine();
288                    if (item.mima.Equals(pwdFrom))
289                    {
290                    Console.WriteLine("请输入转入卡卡号");
291                   string zr = Console.ReadLine();
292                        foreach (Card toItem in twos)
293                        {
294                            if (toItem!=null&&toItem.kahao.Equals(zr))
295                            {
296                                toIsOrNot = true;
297                                Console.WriteLine("请输入转账金额");
298                                double money = double.Parse(Console.ReadLine());
299                                while (money > item.yumoney) 
300                                {
301                                    Console.WriteLine("转账金额不够，请重新输入");
302                                    money = double.Parse(Console.ReadLine());
303                                }
304                                item.yumoney -= money;
305                                toItem.yumoney += money;
306                                Console.WriteLine("转账成功，您的余额为{0}",item.yumoney);
307                                break;
308                            }
309 
310                        }
311                        if (toIsOrNot==false)
312                        {
313                            Console.WriteLine("转入卡不存在");
314                        }
315                        break;
316                    }
317                    else
318                    {
319                        Console.WriteLine("转出卡密码错误");
320                    }
321                }
322            }
323            if (fromIsOrNot==false)
324            {
325                Console.WriteLine("转出卡不存在！");
326            }
327             Console.WriteLine("
是否返回主页面？(y/n)");
328           char  num=char.Parse(Console.ReadLine());
329            switch (num)
330            {
331                case 'y':
332                    huanying();
333                    break;
334                case 'n':
335                    Console.WriteLine("欢迎下次光临");
336                    
337                    break;
338            }
339        }
340                 
341        //修改密码
342        public string xinmima;
343        public void ModifyPwd()
344        {
345                Console.WriteLine("请输入账号:");
346                string no = Console.ReadLine();
347                
348                for (int i = 0; i < twos.Length; i++)
349                {
350                    if (twos[i] != null)
351                    {
352                        if (twos[i].kahao == no)
353                        {
354                            Console.WriteLine("请输入原密码:");
355                            string mima1 = Console.ReadLine();
356                            for (int j = 0; j < 3; j++)
357                            {
358                                if (twos[i].mima == mima1)
359                                {
360                                    Console.WriteLine("请输入新密码:");
361                                    xinmima = Console.ReadLine();
362                                    Console.WriteLine("请再次输入新密码:");
363                                    if (xinmima == Console.ReadLine())
364                                    {
365                                        twos[i].mima = xinmima;
366                                        Console.WriteLine("账户密码修改成功!!");
367                                        break;
368                                    }
369 
370                                }
371                            }
372 
373                             break;
374                        }
375                    }
376                    if (twos[i].kahao != no)
377                    {
378 
379                        Console.WriteLine("您输入的账号不存在!");
380                        break;
381 
382                    }
383                }
384             Console.WriteLine("
是否返回主页面？(y/n)");
385           char  num=char.Parse(Console.ReadLine());
386            switch (num)
387            {
388                case 'y':
389                    huanying();
390                    break;
391                case 'n':
392                    Console.WriteLine("欢迎下次光临");
393                    break;
394            }
395            
396        }
397        
398        }
399     }

Card

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MyBank
{
    class Card
    {
        //卡号
        public string kahao;
        //密码
        public string mima;
        //持卡人
        public string names;
        //余额
        public double yumoney;
    }
}

Main()

 1 namespace MyBank
 2 {
 3     class Program
 4     {
 5         static void Main(string[] args)
 6         {
 7             Bank bank = new Bank();
 8 
 9             bank.fx();//卡信息
10             bank.Show();//展示卡信息
11             bank.huanying();//欢迎界面
12             Console.ReadLine();
13         }
14     }
15 }
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原文地址：https://www.cnblogs.com/s1294/p/4910816.html