第二版银行储蓄系统

代码：

#include <iostream>#include <iomanip>#include <windows.h>#include <cstring>#include <fstream>#include <cstdlib>#include <conio.h>#include <ctype.h>using namespace std;const int upnum=2000;//系统最多容纳的用户数class Bank;class User{public:    void setUser(int acc,string na,int pw,double mon,double bal,string id,int sta);    void showName();    void showBalance(string prompt);//显示账户余额    bool psaaWordISRight();//判断密码是否正确    bool ISNormalUser();//存款，取款，转账等功能需要账户处于正常状态，判断账户是否处于正常状态    friend class Bank;//将Bank设为User的友元类private:    int account;//账号    int password;//密码    string name;//名字    double balance;//余额    double money;//未加利率的金额    string identificant;//身份证号    int status;//账户状态：0—正常，1—挂失，2—销户};class Bank{public:    Bank();//从文件中读取数据    ~Bank();//程序结束时将数据存入文件中    void work();//业务驱动    void openAccount();//开户    void cancelAccount();//销户    void save();//存款    void withdraw();//取款    void showAccount();//显示余额    void transferAccount();//转账    void reportLoss();//挂失    void canlelLoss();//解除挂失    void updatePassword();//修改密码    int getUser();//输入账号查询用户，返回用户在对象数组的下表private:    int N;//实际用户数目    static double rate;//利率    User users [upnum];//User数组};double Bank::rate=0.0225;int pass();//业务员登录int chooseInMenu();//显示菜单并由业务员选择int intputPassword();//返回键盘输入的密码int m=0;//记录明细业务Bank::Bank(){    ifstream infile("account.txt",ios::in);    if(!infile)    {        cerr<<"open error!"<<endl;        exit(1);    }    int i=0;    int acc;    int pw;    string na;    double bal;    string id;    int sta;    double mon;    while (infile>>acc>>na>>pw>>bal>>id>>sta)    {        users[i].setUser(acc,na,pw,mon,bal,id,sta);        i++;    }    N=i;    infile.close();}Bank::~Bank(){    ofstream outfile("account.txt",ios::out);    if(!outfile)    {        cerr<<"open error!"<<endl;        exit(1);    }    int i;    for(i=0; i<N; i++)    {        outfile<<users[i].account<<" ";        outfile<<users[i].name<<" ";        outfile<<users[i].password<<" ";        outfile<<users[i].balance<<" ";        outfile<<users[i].identificant<<" ";        outfile<<users[i].status<<" "<<endl;    }    outfile.close();}void Bank::work()//work函数对业务进行判断{    int ichoice;    do    {        ichoice=chooseInMenu();        switch(ichoice)        {        case 1:            openAccount(); //开户            break;        case 2:            cancelAccount(); //销户            break;        case 3:            save();  //存款            break;        case 4:            withdraw();  //取款            break;        case 5:            showAccount(); //查余额            break;        case 6:            transferAccount();  //转账            break;        case 7:            reportLoss();  //挂失            break;        case 8:            canlelLoss();  //解除挂失            break;        case 9:            updatePassword();  //修改密码            break;        case 0:            cout<<"+++++欢迎再次您使用++++++"<<endl;        }    }    while(ichoice);}void Bank::openAccount(){    if(N==upnum)    {        cout<<"银行用户数目已达上限，不能在开户！"<<endl;        return ;    }    int acc;    int pw;    string na;    double mon;    double bal;    string id;    int sta;    int ipw1,ipw2;    int year;    acc=10001+N;    cout<<"正在开户......"<<endl;    acc=10001+N;    cout<<"账号："<<acc<<endl;    cout<<"请输入户主的名字：";    cin>>na;    cout<<"请输入身份证号:";    cin>>id;    cout<<"请输入密码：";    ipw1=intputPassword();    cout<<"确认密码：";    ipw2=intputPassword();    if(ipw1==ipw2)    {        pw=ipw1;        sta=0;        cout<<"存入金额：";        cin>>bal;        ofstream outfile1("expence_record.txt",ios::app);//打开文件录入账号和账号之间的存取明细        if(!outfile1)        {            cerr<<"expence_record file cannot open!"<<endl;            exit(1);        }        outfile1<<acc<<" 存入 "<<acc<<" "<<setiosflags(ios::fixed)<<setprecision(2)<<bal<<" 元"<<endl;        outfile1.close();//关闭文件        ofstream outfile2("account.txt",ios::app);//打开文件存将用户信息存入文件        if(!outfile2)        {            cerr<<"account.txt file cannot open!"<<endl;            exit(1);        }        outfile2<<acc<<" "<<na<<" "<<ipw1<<" "<<setiosflags(ios::fixed)<<setprecision(2)<<bal<<" "<<id<<" "<<sta<<endl;        outfile2.close();//关闭文件        cout<<"请输入要存入的期限(年):";        cin>>year;        double sum=bal+bal*double(year)*rate;        cout<<"期限到时，您将拥有";        cout<<setiosflags(ios::fixed)<<setprecision(2)<<sum<<"元"<<endl;        users[N].setUser(acc,na,pw,mon,sum,id,sta);        N++;        cout<<"成功开启！"<<endl;    }    else    {        cout<<"两次密码不一致，开启账户失败！"<<endl;    }}void Bank::cancelAccount()//销户函数{    int who;    who=getUser();    if(who>=0)    {        users[who].showName();        if(users[who].psaaWordISRight())        {            users[who].showBalance("余额");            cout<<"确认销户（y/n）？";            if(tolower(getchar())=='y')            {                users[who].showBalance("销户成功！，本次取款金额为");                users[who].balance=0;                users[who].status=2;            }            else            {                cout<<"您取消了此操作，销户失败"<<endl;            }            fflush(stdin);   //清理键盘缓存区已有的输入        }    }}void Bank::save()//函数账户存钱{    int who,year;    double money;    who=getUser();//输入所要存款的用户账号    if(who>=0)    {        if(users[who].status==0)//判断账户的是否挂失状态        {            users[who].showName();            if(users[who].psaaWordISRight())            {                cout<<"请输入存入的金额：";                cin>>money;                ofstream outfile("expence_record.txt",ios::app);                if(!outfile)                {                    cerr<<"expence_record file cannot open!"<<endl;                    exit(1);                }                outfile<<users[who].account<<" 存入 "<<users[who].account<<"  "<<setiosflags(ios::fixed)<<setprecision(2)<<money<<" 元"<<endl;                outfile.close();                ifstream infile("expence_record.txt",ios::in);//录入开户后存钱明细                if(!infile)                {                    cerr<<"expence_record file cannot open!"<<endl;                    exit(1);                }                cout<<users[who].account<<" 存入 "<<users[who].account<<"  "<<setiosflags(ios::fixed)<<setprecision(2)<<money<<" 元"<<endl;                infile.close();                cout<<"请输入要存入的期限(年):";                cin>>year;                double sum=money+money*double(year)*rate;                cout<<"期限到时，您将拥有"<<setiosflags(ios::fixed)<<setprecision(2)<<sum<<"元"<<endl;            }        }        else if(users[who].status==1)        {            cout<<"该用户的账户处于挂失状态，存款失败！"<<endl;        }        else        {            cout<<"该用户的账户已经销户，存款失败！"<<endl;        }    }    return;}void Bank::showAccount()//余额及账单显示函数{    int who;    string sta[3]= {"正常","挂失","已经销户"};    who=getUser();    if(who>=0)    {        users[who].showName();        if(users[who].psaaWordISRight())        {            users[who].showBalance("余额有");            cout<<"状态为"<<sta[users[who].status]<<endl;            cout<<"是否要查看您的每一笔账单（y/n）？";            char ch;            cin>>ch;            if(ch=='y')            {                cout<<"您的账单如下："<<endl;                ifstream infile("expence_record.txt",ios::in);                if(!infile)                {                    cerr<<"expence_record file cannot open!"<<endl;                    exit(1);                }                int r1,r4;                string r2,r3,r5;                while(infile>>r1>>r2>>r3>>r4>>r5)                {                    if(r1==users[who].account)                        cout<<r1<<" "<<r2<<" "<<r3<<" "<<r4<<" "<<r5<<" 元"<<endl;                }                infile.close();            }        }    }    return ;}void Bank::withdraw()//取款函数{    int who;    double money;    who=getUser();    if(who>=0)    {        if(users[who].ISNormalUser())        {            users[who].showName();            if(users[who].psaaWordISRight())            {                cout<<"输入取款额";                cin>>money;                if(money>users[who].balance)//判断所取钱的金额是否大于本有金额                {                    cout<<"对不起，您的余额不足！"<<endl;                }                else                {                    users[who].balance-=money;                    users[who].showBalance("取款后，您还有");                    ofstream outfile("expence_record.txt",ios::app);                    if(!outfile)                    {                        cerr<<"expence_record file cannot open!"<<endl;                        exit(1);                    }                    outfile<<users[who].account<<" 取款 "<<users[who].account<<" "<<setiosflags(ios::fixed)<<setprecision(2)<<money<<" 元"<<endl;                    outfile.close();                }            }        }    }    return ;}void Bank::transferAccount()//转账函数{    int whoout,whoin;    double money;    whoout=getUser();    cout<<"转出自";    if(whoout>=0)    {        if(users[whoout].ISNormalUser())        {            users[whoout].showName();            if(users[whoout].psaaWordISRight())//判断所输入的密码是否正确            {                cout<<"请输入转入的金额：";                cin>>money;                if(money>users[whoout].balance)//判断往外转出的账户的金额是否足够                    cout<<"金额不足，转账失败！"<<endl;                else                {                    cout<<"转出到：";                    whoin=getUser();                    if(whoin>=0)                    {                        if(users[whoin].ISNormalUser())                        {                            users[whoout].balance-=money;                            users[whoin].balance+=money;                            users[whoout].showBalance("转账户，您有");                            ofstream outfile("expence_record.txt",ios::app);                            if(!outfile)                            {                                cerr<<"expence_record file cannot open!"<<endl;                                exit(1);                            }                            outfile<<users[whoin].account<<" 转账到 "<<users[whoout].account<<" "<<setiosflags(ios::fixed)<<setprecision(2)<<money<<" 元"<<endl;                            outfile.close();                        }                    }                }            }        }    }    return ;}void Bank::reportLoss()//挂失函数{    int who;    who=getUser();    if(who>=0)    {        users[who].showName();        if(users[who].psaaWordISRight())        {            if(users[who].status==0)            {                users[who].status=1;                cout<<"挂失成功！"<<endl;            }            else if(users[who].status==1)                cout<<"该账户已经挂失！"<<endl;            else                cout<<"该账户已经销户，操作失败！"<<endl;        }    }    return;}void Bank::canlelLoss()//解除挂失{    int who;    who=getUser();    if(who>=0)    {        users[who].showName();        if(users[who].psaaWordISRight())        {            if(users[who].status==0)//原来账户状态为0,表示状态正常，1表示挂失状态，2表示销户状态            {                cout<<"该用户处于正常状态，不需要解除挂失！"<<endl;            }            else if(users[who].status==1)            {                users[who].status==0;                cout<<"解除挂失成功"<<endl;            }            else            {                cout<<"该用户已销户，操作失败！"<<endl;            }        }    }    return ;}void Bank::updatePassword()//更新密码{    int who;    int iPass1,iPass2;    who=getUser();    if(who>=0)    {        users[who].showName();        if(users[who].psaaWordISRight())        {            cout<<"新密码："<<endl;            iPass1=intputPassword();//输入新密码            cout<<"确认密码："<<endl;            iPass2=intputPassword();            if(iPass1==iPass2)//进行新密码确认            {                users[who].password=iPass1;                cout<<"密码修改成功！"<<endl;            }            else                cout<<"两次输入的不同，修改失败！"<<endl;        }    }}int Bank::getUser()//返回函数，对文件中的用户信息进行搜索返回一个大于等于0的数表示找到，否则未找到{    int id;    cout<<"账号:";    cin>>id;    int idex=-1;    int low=0,high=N-1,mid;    while (low<=high)    {        mid=(low+high)/2;        if(users[mid].account==id)        {            idex=mid;            break;        }        else if(users[mid].account>id)            high=mid-1;        else            low=mid+1;    }    if(idex<0)        cout<<"此用户不存在，本次操作失败！"<<endl;    return idex;}void User::setUser(int acc,string na,int pw,double mon,double bal,string id,int sta){    account=acc;    password=pw;    name=na;    money=mon;    balance=bal;    identificant=id;    status=sta;}void User::showName()//显示户主姓名{    cout<<"户主姓名:"<<name<<endl;}void User::showBalance(string prompt){    cout<<prompt<<" "<<balance<<"元"<<endl;}bool User::psaaWordISRight()//判断密码是否正确{    int iPass;    bool right=true;    cout<<"请输入密码："<<endl;    iPass=intputPassword();    if(iPass!=password)    {        right=false;        cout<<"密码输入错误，操作失败!"<<endl;    }    return right;}bool User::ISNormalUser()//判断用户是否为正常状态{    bool normal=true;    if(status!=0)    {        normal=false;        cout<<"该账户处于"<<(status==1?"挂失":"销户")<<"状态，不能进行操作！"<<endl;    }    return normal;}int main(){    cout<<endl;    cout<<"             +-------------------------------------------+"<<endl;    cout<<"             +                                           +"<<endl;    cout<<"             +             欢迎来到c++银行               +"<<endl;    cout<<"             +                                           +"<<endl;    cout<<"             +-------------------------------------------+"<<endl;    if(pass())//pass()函数对银行业务员进行账号判断    {        Bank b;        b.work();    }    return 0;}int intputPassword()//输入密码{    char ch;    int iPass=0;//转换为数字    int i;    while(1)    {        for(i=0; i<6; ++i)        {            ch=getch();            putchar('*');            if(isdigit(ch))            {                iPass=iPass*10+(ch-48);            }            else            {                iPass=0;                break;            }        }        fflush(stdin);//清理键盘缓存区已有的输入        cout<<endl;        if(iPass==0)        {            cout<<"密码要求全为数字且不能都是0!"<<endl;            cout<<"请重新输入!";        }        else            break;    }    return iPass;}int chooseInMenu(){    int i;    while (1)    {        cout<<endl;        cout<<"                  +   请您选择办理的业务选项： +"<<endl;        cout<<"                  +----------------------------+"<<endl;        cout<<"                  +  1.开户   2.销户   3.存款  +"<<endl;        cout<<"                  +  4.取款   5.查询   6.转账  +"<<endl;        cout<<"                  +  7.挂失   8.解挂   9.改密  +"<<endl;        cout<<"                  +           0.退出           +"<<endl;        cout<<"                  +----------------------------+"<<endl<<endl;        cout<<"请选择您所需要办理的业务序号：";        cin>>i;        if(i>=0&&i<=9)            break;        else            cout<<"输入有误，请您重新选择功能！"<<endl;    }    return i;}int pass()//验证密码是否正确{    char sNameInFile[20];    char sPassInFile[20];    ifstream infile("password.txt",ios::out);    if(!infile)    {        cerr<<"password file cannot open！"<<endl;        exit(1);    }    infile>>sNameInFile>>sPassInFile;    infile.close();    char sName[20];    char sPass[20];    char ch;    int itry=3;    int right=0;    do    {        cout<<"请输入业务员用户名:"<<endl;        cin>>sName;        cout<<"请输入密码"<<endl;        int i=0;        while((ch=getch())!='\r')        {            sPass[i++]=ch;            putchar('*');        }        sPass[i]='\0';        fflush(stdin);        cout<<endl;        if(strcmp(sName,sNameInFile)==0&&strcmp(sPass,sPassInFile)==0)//判断业务员的账户和密码是否都正确        {            right=1;            break;        }        else        {            itry--;            if(itry>0)            {                cout<<"超过3次将会退出，您还可以尝试"<<itry<<"次!"<<endl;            }            else            {                cout<<"对不起，您不能进入系统!"<<endl;            }        }    }    while(itry);    return right;}

登陆：

对已存在用户进行销户：

对所选账户进行存款：

取款：

查询：

转账：

两次转账余额减少显示并储存！

挂失：

解挂：

改密：

退出