简易银行卡系统C++版本

#include<iostream>
#include<string>
#include <stdio.h>
#include<conio.h>
using namespace std;
int N=10000;                                //设置全局变量，这里N不是很安全，需要重新考虑

//顾客信息，包括顾客名字，身份证号，密码，账户余额！
struct customer
{
    string name;                              //用户名，在注册的时候需要填写的
    int IDcard;                            //用户身份证号，在注册的时候需要填写的          可以随便填写，或者是做格式检查，不管了~
    int password;                          //用户密码,六位数
    double AmountOfMoney;                       //账户余额
    int LoginNumber;                          //账户，登陆的时候用的
    customer *Next;                             //指向下一位
    string admin;                                //管理员账户登录账号
    int Apassword;                               //管理员账户登录密码
    bool flag;
    customer()
    {
        admin=admin;
        Apassword=10086;
    }
};


//customer *head=NULL;

class BankManager
{
private:
    customer *head;                             //链表头指针
public:
    BankManager();//构造函数
    customer* login();
    void CreateAccount();
    bool isLoginNumber(int loginnumber,int password);                       //判断账号是否存在
    int welcome2();
    int welcome1();
    void manager();                                                       //管理员账户
    void managerChangePassword();
    bool managerWelcome();
    int MainManagerWelcome();
    void savemoney(customer* L);
    void takemoney(customer* L);
    bool exchange(customer* p,double money);                                            //只能从已登录账号p向其他账号转账
    void destory(customer* p);
    void changePassword(customer *p);
    customer* freezeaccountByID();
    customer* freezeaccountByLoginNumber();
    void print(customer* p);
    void freezeaccount(customer *p);
    customer *lookforAccount();
    void reuse(customer *p);
    void ReturnToWelcome1();
    bool CheckOut(string name,int Idcard);                           //检查账号是否已经存在
};                    //必须加分号

void BankManager::freezeaccount(customer *p)
{
    p->flag=true;
    cout<<"冻结成功！"<<endl;
}

customer *BankManager::lookforAccount()
{
    cout<<"请输入要查找的账户和密码："<<endl;
    int loginnumber;
    int password;
    cin>>loginnumber;
    cin>>password;
    customer *p;
    p=head;
    while (p->LoginNumber!=loginnumber)
    {
        p=p->Next;
    }
    if (p->password==password)
    {
        return p;
    }
    else
    {
        cout<<"您输入的账户和密码不匹配！"<<endl;
        exit(1);
    }
}

bool BankManager::CheckOut(string name,int Idcard)                //判断账号是否已经存在
{
    customer *p;
    p=head;
    while(p->Next!=NULL)
    {
        p=p->Next;
        if(p->IDcard==Idcard)
        {
            return false;
        }
        int len;
        len=name.length();
        for (int i=0;i<len;i++)                //i<=len 会出现字符越界！！！
        {
            if (p->name[i]==name[i])
            {
                return false;
            }
        }
    }
    return true;
}

int BankManager::welcome2 ()
{
    cout<<"What can we do for you?"<<endl;
    cout<<endl;
    for(int i=0;i<80;i++)
        cout<<"*";
    cout<<endl;

    cout<<"1              管理员登陆"<<endl;
    cout<<"2              用户登陆"<<endl;
    cout<<"3              用户注册"<<endl;
    cout<<"4              退出"<<endl;
    for(int i=0;i<80;i++)
        cout<<"*";
    cout<<endl;
    int j;
    cout<<"请输入1,2,3或者4"<<endl;
    cin>>j;
    return j;
}

bool BankManager::managerWelcome()
{
    cout<<"请输入管理员账户和密码："<<endl;

    string administer="abcde";
    int Apassword1;
    customer *p;
    p=head;
    /**
    string administer;            //如果没有初始化，则会出现string 类型数组越界，这个问题怎么解决？！
    for(int i=0;i<5;i++)
    {
        cin>>administer[i];
        cout<<"TODO"<<endl;
        if (administer[i]!=p->admin[i])
        {
            return false;
        }
    }
    **/
    for (int j=0;j<5;j++)
    {
        cin>>administer[j];
    }
    while(p->admin!=administer)
        return false;
    cin>>Apassword1;
    if (Apassword1!=p->Apassword)
    {
        return false;
    }
    return true;
}

void BankManager::managerChangePassword()
{
    cout<<"请输入要重置的5位的用户名和5位的密码："<<endl;
    customer *p;
    p=head;
    string ad="admin";
    int apassword;
    for (int i=0;i<5;i++)
    {
        cin>>ad[i];
    }
    cin>>apassword;
    p->admin=ad;
    p->Apassword=apassword;
    cout<<"用户名和密码修改成功！"<<endl;
}

int BankManager::MainManagerWelcome()
{
    cout<<"Welcome ! Admin!"<<endl;
    cout<<"What can i do for you?"<<endl;
    for (int i=0;i<80;i++)
    {
        cout<<"*";
    }
    cout<<endl;
    cout<<"1                 修改管理员账户和密码"<<endl;
    cout<<"2                 冻结账户"<<endl;
    cout<<"3                 解冻结账户"<<endl;
    cout<<"4                 找回账号和密码"<<endl;
    cout<<"5                 退出管理员账户"<<endl;
    for (int i=0;i<80;i++)
    {
        cout<<"*";
    }
    cout<<endl;
    cout<<"请输入你的选择！"<<endl;
    int logo;
    cin>>logo;
    return logo;
}

void BankManager::manager()               //管理员账户提供查询工作，可以通过用户名查询，可以通过身份证号查询，可以通过登陆账号查询，可以做找回账号和冻结的工作
{
    //冻结和解冻结工作只能通过管理员来进行
}

BankManager::BankManager()
{
    //customer *head;                                      //构造函数的重复定义，导致执行不下去！
    head=new customer;
    head->flag=false;
    head->Next=NULL;
    head->AmountOfMoney=0;
    head->admin="admin";
    head->Apassword=10086;
}

void BankManager::CreateAccount()
{
    string s;
    int Idcard;                                   
    int password,password1;    //两次输入密码
    customer *L,*p;
    L=new customer;
    p=new customer;
    p=head;
    //L=(customer *)malloc(sizeof(struct customer));
    cout<<"please input your name:"<<endl;
    //for(int i=0;i<20;i++)        //这里关于字符串输入可以改进，应该写成动态增长的！说不定有人的名字很臭很长
    //    cin>>s[i];
    cin>>s;
    cout<<"please input your IDcard:"<<endl;                //判断身份证是18位的
    cin>>Idcard;
    cout<<"please set a password:"<<endl;
    cin>>password;
    cout<<"please input the password again:"<<endl;
    cin>>password1;
    while(password!=password1)                                    //两次输入的密码不相同
    {
        cout<<"The password are not same!"<<endl;
        cout<<"please set a password:"<<endl;
        cin>>password;
        cout<<"please input the password again:"<<endl;
        cin>>password1;
    }
    while(CheckOut(s,Idcard)==false)
    {
        cout<<"用户或者身份证号已经注册过，请换一个！"<<endl;                //可以考虑如果一个用户或者身份证号可以开多个账号情况
        cout<<"please input your name:"<<endl;
        cin>>s;
        cout<<"please input your Idcard:"<<endl;
        cin>>Idcard;
    }
    if(password==password1)
    {
        cout<<"Congratulations! you have a bank account,your login number is :"<<N<<endl;
        L->name=s;
        L->IDcard=Idcard;
        L->password=password;
        L->flag=false;
        L->AmountOfMoney=0;
        L->LoginNumber=N;                                //随机分配卡号
        while(p->Next!=NULL)
            p=p->Next;
        p->Next=L;
        L->Next=NULL;
        N++;
        print(L);
    }
    /**
    cout<<"按任意键返回主菜单"<<endl;
    _getch();
    welcome1();
    **/
}

customer* BankManager::login()                //注册遇到了相同的账户，那么要返回的！
{
    int loginnumber,password;
    cout<<"Please input your login number and password:"<<endl;
    cin>>loginnumber;
    cin>>password;
    customer *p;
    p=head;
    int k =0;
    while(isLoginNumber(loginnumber,password)==false)
    {
        cout<<"The login number you input is not igsit!";
        cout<<"Please input your login number and password:"<<endl;
        cin>>loginnumber;
        cin>>password;
        k++;
        if(k>3)                                       //当错误次数大于3次，让使用者推出
            exit(1);
    }
    while(p->Next!=NULL&&p->LoginNumber!=loginnumber)
        p=p->Next;                                  //找到注册账号
    cout<<"Welcome!"<<endl;
    return p;
}

bool BankManager::isLoginNumber(int loginnumber,int password)               //判断账户是否存在
{
    customer *p;
    p=head;
    while(p->Next!=NULL)
    {
        p=p->Next;
        if((p->LoginNumber==loginnumber)&&(p->password==password))
            return true;
    }
    return false;                                 //不存在这个账户
}

int BankManager::welcome1()
{
    cout<<"Please select your choice:"<<endl;
    for(int i=0;i<80;i++)
    {
        cout<<"*";
    }
    cout<<"1           存款"<<endl;
    cout<<"2           取款"<<endl;
    cout<<"3           转账"<<endl;
    cout<<"4           销户"<<endl;
    cout<<"5           修改密码"<<endl;
    cout<<"6           查看"<<endl;
    cout<<"7           退出"<<endl;
    for(int i=0;i<80;i++)
    {
        cout<<"*";
    }
    int j;
    cout<<"Please input your choice:"<<endl;
    cin>>j;
    return j;
}

void BankManager::savemoney(customer* L)
{
    cout<<"please input the amount of money you want to save:"<<endl;
    double money;
    cin>>money;
    if(money>0)
    {
        L->AmountOfMoney=L->AmountOfMoney+money;
        cout<<"存款完成！"<<endl;
    }
    else
    {
        cout<<"别逗了，你个穷鬼！"<<endl;
    }
    cout<<endl;
    /**
    cout<<"完成存款，按任意键返回主菜单："<<endl;
    _getch();
    welcome1();
    **/
}

void BankManager::takemoney (customer* L)
{
    cout<<"Please input the amount you want to take off:"<<endl;
    int amount=0;
    cin>>amount;
    if(amount>=0)
    {
        L->AmountOfMoney=L->AmountOfMoney-amount;
        cout<<"取款完成"<<endl;
    }
    else
    {
        cout<<"余额不足，不允许透支！"<<endl;
    }
    cout<<endl;
}

bool BankManager::exchange(customer* p,double money)                                  //在子进程运行中，没有任何安全机制，感觉非常的怪异啊
{
    customer *L;
    L=head;
    cout<<"请输入要转账的目标账户："<<endl;
    int loginnumber;
    cin>>loginnumber;
    //查找目标账户
    while(L->LoginNumber!=loginnumber)
    {
        L=L->Next;
    }
    if(L->LoginNumber==loginnumber)
    {
        p->AmountOfMoney=p->AmountOfMoney-money;
        L->AmountOfMoney=L->AmountOfMoney+money;
        cout<<"转账成功！"<<endl;
        return true;
    }
    else
    {
        cout<<"Can not find the goal account!"<<endl;
        return false;
    }
}

void BankManager::destory(customer *p)                             
{
    customer *p1;
    p1=head;
    while(p1->Next!=p)
        p1=p1->Next;
    p1->Next=p->Next;
    delete p;
}

void BankManager::changePassword(customer *p)
{
    int newpassword,newpassword2;
    cout<<"Please input the new password："<<endl;
    cin>>newpassword;
    cout<<"Please input the new password again:"<<endl;
    cin>>newpassword2;
    while(newpassword!=newpassword2)
    {
        cout<<"The password you input is not same!";
        cout<<"Please input the new password："<<endl;
        cin>>newpassword;
        cout<<"Please input the new password again:"<<endl;
        cin>>newpassword2;
    }
    if(newpassword==newpassword2)
    {
        p->password=newpassword;
    }
}

void BankManager::print(customer *p)
{
    for(int i=0;i<80;i++)
        cout<<"*";
    cout<<endl;
    cout<<"The money in your account is:         "<<p->AmountOfMoney<<endl;
    cout<<"Your IDcard is:                       "<<p->IDcard<<endl;
    cout<<"Your login number is:                 "<<p->LoginNumber<<endl;
    cout<<"Your name is:                         "<<p->name<<endl;
    for(int i=0;i<80;i++)
    {
        cout<<"*";
    }
    cout<<endl;
}

customer* BankManager::freezeaccountByID()
{
    cout<<"Please input your IDcard:";
    double IDcard;
    cin>>IDcard;
    customer *p;
    p=head;
    while (p->IDcard!=IDcard)
    {
        p=p->Next;
    }
    if (p->Next==NULL&&p->IDcard!=IDcard)
    {
        cout<<"您要冻结的账户不存在"<<endl;
        exit(1);
    }
    return p;
}

customer* BankManager::freezeaccountByLoginNumber()
{
    cout<<"请输入你的登陆账号"<<endl;
    int loginnumber;
    cin>>loginnumber;
    customer *p;
    p=head;
    while(p->LoginNumber!=loginnumber)
    {
        p=p->Next;
    }
    if (p->LoginNumber!=loginnumber&&p->Next==NULL)
    {
        cout<<"你要查找的账号不存在！"<<endl;
        exit(1);
    }
    return p;
}

void BankManager::reuse(customer *p)
{
    p->flag=false;
    cout<<"解冻结成功！"<<endl;
}

int main()
{
    int n;
    BankManager a;
    cout<<"顾客您好，冻结账户和解冻结账户，请找管理员！"<<endl;
    n=a.welcome2();
    while(1)
    {
        if(n==1)
        {
            int count=0;
            while (a.managerWelcome()==false&&count<3)
            {
                a.managerWelcome();
                count++;
            }
            if (count>=3)
            {
                exit(1);            //防止刺探账户！
            }
            int logo;
            logo=a.MainManagerWelcome();
            while(1)
            {
                if (logo==1)
                {
                    a.managerChangePassword();
                }
                else if (logo==4)
                {
                    customer *p1;
                    customer *p2;
                    
                    p1=a.freezeaccountByID();
                    p2=a.freezeaccountByLoginNumber();

                    if (p1->IDcard==p2->IDcard&&p1->LoginNumber==p2->LoginNumber)
                    {
                        cout<<"Welcome!"<<endl;
                        for (int i=0;i<80;i++)
                        {
                            cout<<"*";
                        }
                        cout<<endl;
                        a.print(p1);                 //把账户打印出来
                        for (int i=0;i<80;i++)
                        {
                            cout<<"*";
                        }
                        cout<<endl;
                    }
                }
                else if (logo==2)
                {
                    customer *p1;
                    p1=a.lookforAccount();
                    a.freezeaccount(p1);
                }
                else if(logo==3)
                {
                    customer *p1;
                    p1=a.lookforAccount();
                    a.reuse(p1);
                }
                else if (logo==5)
                {
                    break;
                }
                else
                    cout<<"输入的选择非法！"<<endl;
                cout<<"按任意键返回选择界面"<<endl;
                _getch();
                logo=a.MainManagerWelcome();
            }
        }
        else if(n==2)
        {
            customer *L;
            L=(customer *)malloc(sizeof(struct customer));             //申请一个空间
            int m=0;
            L=a.login();
            if(L->flag == false)
            {
                m=a.welcome1();
                while(1)
                {
                    if(m==1)
                    {
                        a.savemoney(L);
                    }
                    else if(m==2)
                    {
                        a.takemoney(L);
                    }
                    else if(m==3)
                    {
                        double money;
                        cout<<"请输入转账金额："<<endl;
                        cin>>money;
                        if (L->AmountOfMoney<money)
                        {
                            cout<<"余额不足，不能转账！"<<endl;
                            continue;
                        }
                        else
                        a.exchange(L,money);
                    }
                    else if(m==4)
                    {
                        a.destory(L);
                        //continue;                  //会出现强退的错误！应该是退出了if循环进入了while循环中，但是该节点已经删除，所以会出现错误！
                        break;
                    }
                    else if(m==5)
                    {
                        a.changePassword(L);
                    }
                    else if(m==6)
                    {
                        a.print(L);
                    }
                    else if(m==7)
                    {
                        break;
                    }
                    cout<<"按任意键返回选择界面"<<endl;
                    _getch();
                    m=a.welcome1();
                }
            }
            else
            {
                cout<<"你的账户处于冻结中，如果想要解冻结请找管理员！"<<endl;
            }
        }
        else if(n==3)
            a.CreateAccount();
        else if(n==4)
            exit(1);
        else
            cout<<"your input is illegal!"<<endl;
    cout<<"按任意键返回主菜单"<<endl;
    _getch();
    n=a.welcome2();
    }
    return 0;
}

这是自己写的简易银行卡系统，基本功能可以实现，也是比较简单的！！