以现实中银行卡为原型，进行需求调查，抽象出相应的类，设计类的成员函数和数据 成员，完成银行账户管理系统。编写程序，帮助工作人员有效、准确并且高校的完成存取事 件。(系统主要完成开户管理，存取钱管理，修改密码，注销等功能)C＋＋

以下是银行账户管理系统的设计：

1. Account类
- 数据成员：账户号（accountNumber）、账户余额（balance）、账户密码（password）
- 成员函数：构造函数（Account）、获取账户号（getAccountNumber）、获取账户余额（getBalance）、修改账户余额（modifyBalance）、获取账户密码（getPassword）、修改账户密码（modifyPassword）

2. Bank类
- 数据成员：账户列表（accountsList）
- 成员函数：开户（createAccount）、存款（deposit）、取款（withdraw）、修改密码（modifyPassword）、注销账户（closeAccount）

下面是C++代码实现：

#include <iostream>
#include <vector>
using namespace std;

class Account {
private:
    string accountNumber;
    double balance;
    string password;
public:
    Account(string number, double initialBalance, string pass) {
        accountNumber = number;
        balance = initialBalance;
        password = pass;
    }
    string getAccountNumber() {
        return accountNumber;
    }
    double getBalance() {
        return balance;
    }
    void modifyBalance(double amount) {
        balance += amount;
    }
    string getPassword() {
        return password;
    }
    void modifyPassword(string pass) {
        password = pass;
    }
};

class Bank {
private:
    vector<Account> accountsList;
public:
    void createAccount(string accountNumber, double initialBalance, string password) {
        Account newAccount(accountNumber, initialBalance, password);
        accountsList.push_back(newAccount);
        cout << "开户成功！账户号：" << accountNumber << endl;
    }
    void deposit(string accountNumber, double amount) {
        for (int i = 0; i < accountsList.size(); i++) {
            if (accountsList[i].getAccountNumber() == accountNumber) {
                accountsList[i].modifyBalance(amount);
                cout << "存款成功！账户号：" << accountNumber << "，存入金额：" << amount << "，余额：" << accountsList[i].getBalance() << endl;
                return;
            }
        }
        cout << "账户不存在！" << endl;
    }
    void withdraw(string accountNumber, double amount) {
        for (int i = 0; i < accountsList.size(); i++) {
            if (accountsList[i].getAccountNumber() == accountNumber) {
                if (accountsList[i].getBalance() < amount) {
                    cout << "余额不足！" << endl;
                    return;
                }
                accountsList[i].modifyBalance(-amount);
                cout << "取款成功！账户号：" << accountNumber << "，取出金额：" << amount << "，余额：" << accountsList[i].getBalance() << endl;
                return;
            }
        }
        cout << "账户不存在！" << endl;
    }
    void modifyPassword(string accountNumber, string password) {
        for (int i = 0; i < accountsList.size(); i++) {
            if (accountsList[i].getAccountNumber() == accountNumber) {
                accountsList[i].modifyPassword(password);
                cout << "密码修改成功！账户号：" << accountNumber << endl;
                return;
            }
        }
        cout << "账户不存在！" << endl;
    }
    void closeAccount(string accountNumber) {
        for (int i = 0; i < accountsList.size(); i++) {
            if (accountsList[i].getAccountNumber() == accountNumber) {
                accountsList.erase(accountsList.begin() + i);
                cout << "账户注销成功！账户号：" << accountNumber << endl;
                return;
            }
        }
        cout << "账户不存在！" << endl;
    }
};

int main() {
    Bank bank;
    bank.createAccount("1001", 1000, "123456");
    bank.deposit("1001", 500);
    bank.withdraw("1001", 200);
    bank.modifyPassword("1001", "654321");
    bank.closeAccount("1001");
    return 0;
}