C++ 银行系统：实现开户、销户、存款、取款、查询、挂失、交易记录导出等功能

#include #include #include #include using namespace std;

class Bank; void menu(Bank &);

class Account { private: string name; //户名 string ID; //账号 string mima; //密码 double yue; //余额 bool isLost=false;//挂失功能 public: string record=""; Account(string i,string n,double y,string m) { ID =i; name =n; yue =y; mima =m; } string getID() { return ID; } string getMi() { return mima; } //挂失 void setLost(bool state) { isLost=state; } bool getLost() { return isLost; } void showInfo() { cout << "储户账号:" << ID << endl; cout << "储户姓名:" << name << endl; cout << "储户余额" << yue << endl; cout<<"历史交易记录："<<endl; cout<<record; } void saving(double a) { yue =yue +a; record=record+"save:\n"; } bool qukuan(double a) { if(yue <a) { cout<<"余额不足"<<endl; return 0; } else { yue -= a; cout << "取款成功" << endl; record=record+"get:\n"; return 1; } } };

class Bank { private: int accountNumber; Account *account[100]; //用户个数上限 public: Bank() { accountNumber =0; } void createaccount() { //实现开户功能 string ID,name,mima; double yue; char choice; here: cout<<"请输入您的账号"<<endl; cin>>ID; cout<<endl; //检查账户是否已存在 for(int i = 0; i<accountNumber; i++) { if(account[i]->getID()==ID) { cout<<"该账户已存在，请重新输入！"<<endl; goto here; } } cout<<"请输入您的用户名"<<endl; cin>>name; cout<<"请输入您的密码"<<endl; cin>>mima; cout<<"您是否要预存款?(Y/N)"<<endl; cin>>choice; if(choice=='Y'||choice=='y') { cout<<"- 存入金额 : "; cin>>yue; } else yue=0; Account *a=new Account(ID,name,yue,mima); //传送用户数据 account[accountNumber++]=a; cout <<"当前已有储户"<<accountNumber<< endl; cout<<"创建成功"<<endl; } void deleteaccount() { //实现销户功能 int i; string id,m; cout<<"请输入您的账号\n"; cin>>id; cout<<"请输入您的密码\n"; cin>>m; cout<<"请问您是否确认销户？(Y/N)"; char thisChoice; cin>> thisChoice; if(thisChoice!='Y' && thisChoice!='y') return; cout <<"您要注销的账户为："<<id<< endl; for(i = 0; i<accountNumber; i++) { //删除用户 if(account[i]->getID()==id&&account[i]->getMi()==m) { Account * temp= account[i]; account[i]=account[accountNumber-1]; account[accountNumber-1]=temp; delete account[--accountNumber]; cout<<"删除成功"<<endl; return; } } cout<<"不存在该用户或密码错误！"<<endl; } void guashi() {//实现挂失功能 int i; string id,m; cout<<"请输入您的账号\n"; cin>>id; cout<<"请输入您的密码\n"; cin>>m; cout<<"请问您是否确认挂失？(Y/N)"; char thisChoice; cin>> thisChoice; if(thisChoice!='Y' && thisChoice!='y') return; cout <<"您要挂失的账户为："<<id<< endl; for(i = 0; i<accountNumber; i++) { //删除用户 if(account[i]->getID()==id&&account[i]->getMi()==m) { account[i]->setLost(true); cout<<"挂失成功"<<endl; return; } } cout<<"不存在该用户或密码错误！"<<endl; } void cunkuan() { //实现存款功能 double money; double yue; string id,m; int i; cout<<"请输入您要存入的账户"; cin>>id; cout<<"请输入您的密码\n"; cin>>m; cout<<"请输入您要存入的金额"; cin>>money; for(i =0; i<accountNumber; i++) { if(account[i]->getID()==id&&account[i]->getMi()==m) { //调用存款函数存款 account[i]->saving(money); cout<<"存款成功"; cout<<endl; account[i]->showInfo(); return; } } cout << "存款失败" << endl; } void quqian() { //实现取款功能 int i; string id,m; double money; cout<<"请输入您的账户"<<endl; cin>>id; cout<<"请输入您的密码"<<endl; cin>>m; cout<<"请输入取款金额"<<endl; cin>>money;

		for(i =0; i<accountNumber; i++) {
			//如果挂失了，是无法取款的
			if(account[i]->getID() ==id&&account[i]->getMi()==m&&!account[i]->getLost()) {
				bool rs=account[i]->qukuan(money);
				//如果取款成功
				if(rs) {
					account[i]->showInfo();
					return;
				} else {
					cout<<"账户余额不足"<<endl;
					return;
				}
			}
		}
		cout<<"失败"<<endl;
	}
	void check() { //查询
		int i;
		string id,m;
		double money;
		cout<<"请输入您的账户"<<endl;
		cin>>id;
		cout<<"请输入您的密码"<<endl;
		cin>>m;
		for(i=0; i<accountNumber; i++) {
			if(account[i]->getID()==id&&account[i]->getMi()==m) {
				account[i]->showInfo();
				return;
			}
		}
		if(i ==accountNumber) {
			cout<<"没找到"<<endl;
		}
	}
	void exportRecord() { //导出交易记录
		int i;
		string id,m;
		double money;
		cout<<"请输入您的账户"<<endl;
		cin>>id;
		cout<<"请输入您的密码"<<endl;
		cin>>m;
		for(i=0; i<accountNumber; i++) {
			if(account[i]->getID()==id&&account[i]->getMi()==m) {
				oofstream file("record.txt");
				if(file.is_open()) {
					file << account[i]->record;
					file.close();
					cout<<"交易记录已导出至record.txt"<<endl;
					return;
				} else {
					cout<<"无法打开文件"<<endl;
					return;
				}
			}
		}
		if(i ==accountNumber) {
			cout<<"没找到"<<endl;
		}
	}

};

void menu() { int m; Bank b; while(1) { system("cls"); cout<<"----------欢迎来到此银行-----------"<<endl; cout<<"----------请选择您的业务-------------"<<endl; cout<<"-----------1、开户-------------------"<<endl; cout<<"-----------2、销户-------------------"<<endl; cout<<"-----------3、存款-------------------"<<endl; cout<<"-----------4、取钱-------------------"<<endl; cout<<"-----------5、查询-------------------"<<endl; cout<<"-----------6、挂失-------------------"<<endl; cout<<"-----------7、导出交易记录------------"<<endl; cout<<"-----------8、退出-------------------"<<endl; cin>>m; switch(m) { case 1: b.createaccount(); system("pause"); break; case 2: b.deleteaccount(); system("pause"); break; case 3: b.cunkuan(); system("pause"); break; case 4: b.quqian(); system("pause"); break; case 5: b.check(); system("pause"); break; case 6: b.guashi(); system("pause"); break; case 7: b.exportRecord(); system("pause"); break; case 8: return; default: cout << "输入有误，请重新输入" << endl; break; } } }

int main() { menu(); return 0;