银行取款机c++实现

在学习unity烦躁之时，自己用c++实现了一个很简单的银行取款系统。功能不是很完善，属于测试版。测试版和最终版本之间的差距还是巨大的，安全问题对于目前的我还是无法解决的。

账号：1008600

密码：000000

以下是银行取款机的源代码：

// 银行ATM取款机.cpp : 定义控制台应用程序的入口点。
//设计者：GooDtoLivE
//来自：科技大学
//学院：信息工程学院
//年级：二年级
//设计时间：2015年8月10

#include "stdafx.h"
#include<iostream>
#include "string.h"
#include "stdlib.h"
using namespace std;

class consumer;

class ATM                                  // ATM取款机
{
public:
ATM(consumer& cn) :cnsm(cn) {}
void welcome();                         // 登陆界面
bool check_passwd(char n[], char pwd[]);// 核对密码
void change_passwd();                   // 修改密码
void fetchmoney();                      // 取款
void information();                      // 查询信息
void functionshow();                    // 功能界面
void guashi();                          //  挂失
void zhuanzhang();                     // 转账
void exitATM();                       // 退出系统
void lock();                           // 锁机
private:
int times;                          // 记录密码输入次数
char  cardID[20];
char psw[10];
float money;
consumer&cnsm;
};

class consumer// 用户
{
public:
friend class ATM;
consumer(char Name[], char Num[], char Nun[], float Money, char Password[]);
protected:
char* get_name();                // 取得姓名
char* get_num();                // 取得卡号
char* get_nun();                //身份证
char* get_passwd();             // 取得密码
float get_money();              // 取得余额
void set_passwd(char pwd[]);     // 设置密码
void set_money(float m);        // 取钱
private:
char passwd[8];                // 用户密码
char name[20];                // 用户姓名
char num[20];
char nun[20];
float money;
};

consumer::consumer(char Name[], char Num[], char Nun[], float Money, char Password[])
{
strcpy_s(name, Name);
strcpy_s(num, Num);
strcpy_s(nun, Nun);
money = Money;
strcpy_s(passwd, Password);
}

char* consumer::get_name()
{
return name;
}

char* consumer::get_num()
{
return num;
}

char* consumer::get_nun()
{
return nun;
}

char* consumer::get_passwd()
{
return passwd;
}

float consumer::get_money()
{
return money;
}

void consumer::set_passwd(char pwd[])
{
strcpy_s(passwd, pwd);
}

void consumer::set_money(float m)
{
money -= m;
}

void ATM::welcome()
{
times = 0;
cout << "\t\t\t****************************\t" << endl;
cout << endl;
cout << "\t\t\t建设银行欢迎您\t" << endl;
cout << ' ' << endl;
cout << "\t\t\t欢迎使用建设银行ATM取款机" << endl;
cout << ' ' << endl;
char pwd[8], num[20], ch;
int i = 0;
int count = 0;
do
{
i = 0;
cout << endl << "\t\t\t请输入卡号:";
do
{
cin.get(ch);
num[i++] = ch;
} while (ch != '\n');
num[i - 1] = '\0';
i = 0;
cout << "\t\t\t请输入密码:";
do
{
cin.get(ch);
pwd[i++] = ch;
} while (ch != '\n');
pwd[i - 1] = '\0';
if (check_passwd(num, pwd) == false)
{
count++;
if (count == 3)
{
ATM::lock();
}
else
{
cout << "\t\t\t请仔细核对账户及密码" << endl;
cout << endl;
cout << "\t\t\t您还有" << 3 - count << "次机会" << endl;
}
}
else
{
system("cls");
cout << "\t\t\t恭喜李先生，登录成功" << endl;
ATM::functionshow();
}
} while (true);//times == 2);
}

bool ATM::check_passwd(char num[], char pwd[])
{
if (strcmp(num, cnsm.get_num()) == 0 && strcmp(pwd, cnsm.get_passwd()) == 0)
return true;
else
return false;
}

void ATM::change_passwd()
{
char pwd[8], repwd[8];
times = 0;
do
{
cout << endl << "请输入旧密码：";
cin >> pwd;
if (!check_passwd(cnsm.get_num(), pwd))times++;
else
break;
} while (times = 3);
if (times == 3)lock();
int t = 0;
do
{
cout << "请输入新密码：";
cin >> pwd;
cout << "请再输入一次新密码：";
cin >> repwd;
if ((t = strcmp(pwd, repwd)) != 0)cout << "你输入的两次密码不一样，请重新输入!" << endl;
} while (t != 0);

cnsm.set_passwd(pwd);
cout << "密码修改成功，请牢记!" << endl;
}

void ATM::fetchmoney()
{
float m;
char ch;
do
{
system("cls");
cout << endl << "\t\t\t你要取多少钱:" << endl;
cin >> m;
while (m <= 0)
{
cout << "\t\t\t请输入正确的数字!" << endl;
cin >> m;
}
if (cnsm.get_money() - m<0)
{
cout << "\t\t\t对不起，你的余额不足!" << endl;
}
else
{
cout << endl << "\t\t\t操作成功，请收好钱!" << endl;
cnsm.set_money(m);
}
cout << "\t\t\t是否要继续该项操作：(Y/N) " << endl;
cin >> ch;
while (ch != 'n'&&ch != 'N'&&ch != 'Y'&&ch != 'y')
{
cin >> ch;
}
} while (ch == 'y' || ch == 'Y');
}

void ATM::information()
{
cout << "\t\t\t**********************************" << endl;
cout << "\t\t\t*" << endl;
cout << "\t\t\t* 用户姓名：" << cnsm.get_name() << endl;
cout << "\t\t\t* 卡号： " << cnsm.get_num() << endl;
cout << "\t\t\t* 身份证： " << cnsm.get_nun() << endl;
cout << "\t\t\t* 余额: " << cnsm.get_money() << endl;
cout << "\t\t\t**********************************" << endl;
cout << "\t\t\t";
system("pause");
}

void ATM::functionshow()
{
int n;
do
{
cout << endl << "\t\t\t请您输入相应的操作序号进行操作：" << endl;
cout << "\t\t\t1) 修改密码 " << endl;
cout << "\t\t\t2) 实时取款 " << endl;
cout << "\t\t\t3) 查看用户信息 " << endl;
cout << "\t\t\t4) 挂失银行卡 " << endl;
cout << "\t\t\t5) 用户转账" << endl;
cout << "\t\t\t6) 退出系统" << endl;
cin >> n;
while (n<0 || n>7)
{
cout << "\t\t\t请输入正确的操作序号:" << endl;
cin >> n;
system("cls");
}
switch (n)
{
case 1:
change_passwd();
break;
case 2:
fetchmoney();
break;
case 3:
information();
break;
case 4:
guashi();
break;
case 5:
zhuanzhang();
system("pause");
break;
case 6:
exitATM();
break;
}
system("cls");
} while (true);
}

void ATM::guashi()
{
char ch;
cout << "\t\t\t您确定要挂失吗？(Y/N) " << endl;
cin >> ch;
if (ch == 'Y'&&ch == 'y')
{
cout << "\t\t\t挂失成功！请您尽快补办新卡！" << endl;
cout << endl << "\t\t\t感谢你对本银行的支持，欢迎下次光临!" << endl;
cout << "\t\t\t系统将自动退出";
system("pause");
exit(0);
}
else if (ch == 'n'&&ch == 'N')
{
cout << "\t\t\t挂失操作已经取消";
system("pause");
ATM::functionshow();
}
else if ((ch != 'N'&&ch != 'n') || (ch != 'Y'&&ch != 'y'))
{
cout << "\t\t\t由于某种原因，您的银行卡未能挂失" << endl;
cout << "\t\t\t系统将自动退出";
system("pause");
exit(0);
}
}

void ATM::zhuanzhang()
{
long ID2;
float money1;
cout << "\t\t\t请输入您要转账的卡号:" << endl;
cin >> ID2;
cout << "\t\t\t你的余额为：" << cnsm.get_money() << endl;
cout << "\t\t\t请输入您要转账的金额:" << endl;
cin >> money1;

if (cnsm.get_money() >= money1)
{
cnsm.set_money(money1);
cout << "\t\t\t转账成功,您卡上余额为:" << cnsm.get_money() << endl;
}
else
{
cout << "\t\t\t金额超出账户余额，请重新输入取款金额:";
cin >> money1;
cnsm.set_money(money1);
cout << "\t\t\t转账成功,您卡上余额为:" << cnsm.get_money() << endl;
}
}

void ATM::lock()
{
cout << endl << "\t\t\t由于您的账号和密码累计3次错误，你的卡已经被没收。 " << endl;
cout << endl;
cout << "\t\t\t请尽快带领证件到银行激活您的银行卡" << endl;
cout << "\t\t\t系统将自动退出" << endl;
system("\t\t\tpause");
exit(0);
}

void ATM::exitATM()
{
cout << endl << "\t\t\t感谢你对本银行的支持，欢迎下次光临!" << endl;
exit(0);
}

int  main()
{
consumer c1("李先生", "1008600", "612132199512245613", 450.8, "000000");
// 构造一个用户
ATM atm(c1);
atm.welcome();
//cout << "这是一个测试程序";
return 0;
}

这个程序还是有很多bug，自己能力还是很不足的，希望大家多多指正并且提出好的建议