ATM_Simple

int main(int argc, const char * argv[]) {
    
    int password = 123456;
    int balance = 100000;
    char operation;
    int wrongTime = 1;
    int inputedPassword;
    int z = 0;                        //状态值
    while (1) {
        printf("****************\n");
        printf("1.输入密码\n2.取款\n3.查询余额\n4.更改密码\n5.退出\n");
        printf("****************\n");
        printf("选一个吧:");
        scanf("%c", &operation);
        while (operation < '1' || operation > '5') {
            printf("别搞笑，好好输：");
            getchar();
            scanf("%c", &operation);
            
        }
        switch (operation) {
                //1.输入密码
            case '1':
                printf("密码是啥：");
                scanf("%d", &inputedPassword);
                
                while (wrongTime < 3 && inputedPassword != password) {
                    printf("别骗我！\n你还有%d次机会:", 3 - wrongTime);
                    scanf("%d", &inputedPassword);
                    wrongTime++;
                }
                if (inputedPassword == password){
                    //正确
                    printf("****************\n");
                    printf("\n输对了，牛逼啊！\n \n");
                    printf("****************\n");
                    z = 1;
                } else{
                    //次数过多
                    printf("****************\n");
                    printf("错多了！狗带吧！\n");
                    printf("****************\n");
                    exit(EXIT_SUCCESS);
                }
                getchar();
                break;
                //2.取款
            case '2':
                if (z == 1) {
                    while(1) {
                        int totalMoney;
                        int num2_1;
                        printf("****************\n");
                        printf("1.￥100\n2.￥300\n3.￥500\n4.其他金额\n");
                        printf("****************\n");
                        scanf("%d", &num2_1);
                        if (num2_1 == 1) {
                            totalMoney = 100;
                        }else if (num2_1 == 2){
                            totalMoney = 300;
                        }else if (num2_1 == 3){
                            totalMoney = 500;
                        }else if (num2_1 == 4){
                            printf("取多少：");
                            scanf("%d", &totalMoney);
                        }else {
                            printf("别搞笑，好好输\n");
                            continue;
                        }
                        if (totalMoney <= balance) {
                            balance -= totalMoney;
                            printf("\n您的余额为：%d\n \n", balance);
                        }else {
                            printf("\n穷B，钱不够！\n \n");
                        }
                        printf("****************\n");
                        printf("1.继续取款\n2.任意数字键退出\n");
                        printf("****************\n");
                        int num2_2;
                        scanf("%d", &num2_2);
                        if (num2_2 == 1) {
                            continue;
                        }else {
                            break;
                        }
                        
                    }
                }
                printf("大兄弟，输密码先！");
                getchar();
                break;
                
                //3.查询余额
            case '3':
                if (z == 1) {
                    printf("你还有￥%d\n", balance);
                }else{
                    printf("大兄弟，输密码先！");
                    
                }
                getchar();
                break;
                //4.更改密码
            case '4':
                if (z == 1) {
                    printf("输入新密码：\n");
                    scanf("%d", &password);
                }else{
                    printf("大兄弟，输密码先！");
                }
                getchar();
                break;
                //5.退出
            case '5':
                printf("拔卡！拔卡！拔卡！\n");
                exit(EXIT_SUCCESS);
            default:
                break;
        }
        printf("\n");
        
    }
    return 0;
}