[C語言]模擬銀行atm機，實現存款、取款等業務

可以使用結構體來存儲賬號、密碼、餘額等。

//
//  main.c
//  testATM
//
//  Created by 趙亞北 on 14-7-10.
//  Copyright (c) 2014年 zyb. All rights reserved.
//

#include <stdio.h>
#include <stdbool.h>//結構體
typedef struct card{
    int cardNumber;
    int cardPassword;
    float money;
    bool state;
}Card;
int cardManage(Card card[],int cardCount){//驗證卡號

    
    while (1) {
        int cardN=0;
        printf("input you cardNumber\n");
               scanf("%d",&cardN);
        
        for (int i=0; i<cardCount; i++) {
            if (cardN==card[i].cardNumber&&card[i].state==1) {
                return i;
            }
            else if (cardN==card[i].cardNumber&&card[i].state==0){
                printf("you card was locked ,please go our company for  help \n");
                return -1;
            }
        }//for
        printf("card number rong\n");
    }//while
}
bool pw(Card card[],int i){//驗證密碼
        int pw;
        int times=3;
    while (times--) {
        printf("input your password:");

        scanf("%d",&pw);
        if (pw==card[i].cardPassword) {
            printf("password right \n");
            return 1;
        }
        else printf("password is not right! you have %d times to input\n",times);

    }
    card[i].state=0;
    printf("card locked! ");
    return 0;
}
void  service(Card card[],int i){//賬號密碼均正確後提供服務

    while (1) {
        printf("1 取款 \n2 存款\n3 查詢\n4 退出\n");
        static int order;
        scanf("%d",&order);
        switch (order) {
            case 1:
                printf("input money counts less then 2000:");
                static int money=0;
                scanf("%d",&money);
                if (money>2000) {
                    printf("less then 2000\n");
                }
                else if (money>card[i].money)printf("money not enough\n");
                else {
                    card[i].money-=money;
                    printf("you have %f\n",card[i].money);break;
                
                }
                break;
                case 2:{
                    printf("input money:");
                    int money=0;
                    scanf("%d",&money);
                    card[i].money+=money;
                    printf("all right,remain money %g\n",card[i].money);
            }
                break;
            case 3:printf("remain money %g\n",card[i].money);
                break;
                case 4:
                return;
            default:
                break;
        }//switch
    }//while
}


int main(int argc, const char * argv[])
{

    Card card[4]={{123,222,1000,1},
        {255,221,50000,1},
        {124,255,50,1},
        {125,999,900,1}};
    int num=0;
    while (1) {
        num=cardManage(card, 4);
        if (num<0) {
            continue;
        }
        bool result=0;
        result=pw(card, num);
        if (result==0) {
            continue;
        }
        service(card, num);
    }
    return 0;
}

 

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