5 设计一个简单的ATM界面程序

分手后的思念是犯贱 2023-06-01 05:53 16阅读 0赞

## 5.1概述 ##

设计一个简单的模拟自动提款机ATM界面的程序，实现用户登录及取款等功能。

## 5.2 需求分析 ##

模拟自动取款机ATN界面，有常用的功能。  
主要功能包括：用户输入密码登录主界面、取款功能、取款后显示取款金额和剩余金额、推出功能等

## 5.3 设计思路 ##

先要用户输入密码，密码不正确并输入次数小于三次将提示重新输入，否则退出界面；密码正确进入取款界面，执行取款功能，然后显示取款金额和剩余金额，最后退出程序。

## 5.4 程序 ##

#include <iostream>
    #include<stdio.h>
    #include<stdlib.h>
    
    using namespace std;
    
    int main()
    
    { while(1)
    { 
    
    
        char Key,CMoney;
        int password1=1,password,i=1,a=1000;
        do
        { 
            system("cls");
            printf("***************************\n");
            printf("* please select key: *\n");
            printf("* 1.password: *\n");
            printf("* 2.get money: *\n");
            printf("* 3. return: *\n");
            printf("***************************\n");
            Key=getchar();
        } while(Key!='1'&&Key!='2'&&Key!='3');
        switch(Key)
        { 
        case'1':
            system("cls");
            do
            { 
                i++;
                printf("please input password ");
                scanf("%d",&password);
                if(password!=password1)
                { 
                    if(i>3)
                    { 
                        printf("wrong!please any key to exit");
                        getchar();
                        exit(0);
                    }
                    else
                        puts("wrong,try again");
                    }
            }while(password1!=password&&i<=3);
            case'2':
    
            do
            { 
                system("cls");
                if(password!=password1)
                { 
                    printf("please logging in,please any key to continue...");
                    getchar();
                    break;
                    }
                    else
                        { 
                            printf("*************\n");
            printf("* please select: *\n");
            printf("* 1.100: *\n");
            printf("* 2.200: *\n");
            printf("* 3.300: *\n");
            printf("* 4.return *\n");
            printf("*************\n");
            CMoney=getchar();
                        }
    
            }while(CMoney!='1'&&CMoney!='2'&&CMoney!='3');
            switch(CMoney)
            { 
            case'1':
                system("cls");
                a=a-100;
                printf("* your credit money is 100,thank you * \n");
                 printf("* the balance is %d \n",a);
                  printf("please any key to return... \n");
                  printf("*************\n");
                  getchar();
                  break;
            case'2':
                 system("cls");
                a=a-200;
                printf("* your credit money is 200,thank you * \n");
                 printf("* the balance is %d \n",a);
                  printf("please any key to return... \n");
                  printf("*************\n");
                  getchar();
                  break;
             case'3':
                 system("cls");
                a=a-300;
                printf("* your credit money is 300,thank you * \n");
                 printf("* the balance is %d \n",a);
                  printf("please any key to return... \n");
                  printf("*************\n");
                  getchar();
                  break;
             case'4':
                break;
            }
            break;
             case'3':
                  printf("*************\n");
            printf("* thank you for your using: *\n");
            printf("* goodbye *\n");
             printf("*************\n");
             getchar();
             break;
    
        }
        break;
      }
    }