写一个c++代码符合以下要求“银行账户管理系统设计与实现”,能够生成各类账户,配置基本属性并完成相关信息查询和显示。要求系统设计具有一定弹性和可扩展性,使得后续维护和扩展功能更容易,后续可以随时增加不同

类型的账户，如定期账户、活期账户、储蓄账户等，并且能够支持账户的增加、删除、修改和查询操作。

以下是一个简单的银行账户管理系统的C++代码：

#include <iostream>
#include <vector>
#include <string>

using namespace std;

class Account {
public:
    Account(string name, int id, double balance) : name(name), id(id), balance(balance) {}
    virtual ~Account() {}

    virtual void deposit(double amount) {
        balance += amount;
    }

    virtual void withdraw(double amount) {
        if (balance >= amount) {
            balance -= amount;
        } else {
            cout << "Error: insufficient balance!" << endl;
        }
    }

    virtual void display() {
        cout << "Name: " << name << endl;
        cout << "ID: " << id << endl;
        cout << "Balance: " << balance << endl;
    }

protected:
    string name;
    int id;
    double balance;
};

class CheckingAccount : public Account {
public:
    CheckingAccount(string name, int id, double balance) : Account(name, id, balance) {}

    void withdraw(double amount) override {
        if (balance >= amount) {
            balance -= amount;
        } else {
            cout << "Error: insufficient balance!" << endl;
            cout << "An overdraft protection of 5000 CNY is applied." << endl;
            balance -= 5000;
        }
    }
};

class SavingsAccount : public Account {
public:
    SavingsAccount(string name, int id, double balance, double interestRate) : Account(name, id, balance), interestRate(interestRate) {}

    void deposit(double amount) override {
        balance += amount;
        balance += balance * interestRate;
    }

private:
    double interestRate;
};

class Bank {
public:
    void addAccount(Account* account) {
        accounts.push_back(account);
    }

    void removeAccount(int id) {
        for (int i = 0; i < accounts.size(); i++) {
            if (accounts[i]->id == id) {
                accounts.erase(accounts.begin() + i);
                break;
            }
        }
    }

    Account* findAccount(int id) {
        for (int i = 0; i < accounts.size(); i++) {
            if (accounts[i]->id == id) {
                return accounts[i];
            }
        }
        return nullptr;
    }

private:
    vector<Account*> accounts;
};

int main() {
    Bank bank;
    Account* account1 = new Account("Alice", 1001, 10000);
    Account* account2 = new CheckingAccount("Bob", 1002, 5000);
    Account* account3 = new SavingsAccount("Charlie", 1003, 20000, 0.01);
    bank.addAccount(account1);
    bank.addAccount(account2);
    bank.addAccount(account3);

    Account* account4 = new Account("David", 1004, 30000);
    bank.addAccount(account4);

    Account* account5 = bank.findAccount(1002);
    if (account5 != nullptr) {
        account5->deposit(1000);
    }

    bank.removeAccount(1003);

    for (int i = 0; i < bank.accounts.size(); i++) {
        bank.accounts[i]->display();
        cout << endl;
    }

    return 0;
}

以上代码实现了一个简单的银行账户管理系统，包括了三种类型的账户：基本账户、支票账户和储蓄账户。Bank类提供了添加、删除和查找账户的功能。Account类提供了基本的账户操作，CheckingAccount类和SavingsAccount类分别在withdraw()和deposit()方法中增加了特定的操作。在main()函数中，我们创建了几个账户，并进行了一些操作，最后输出了所有账户的信息。