用C++写一个个人银行账户管理系统

好的，以下是一个简单的个人银行账户管理系统的C++代码，其中包含了添加账户、取款、存款、查询余额等基本功能：

#include <iostream>
#include <string>

using namespace std;

struct Account {
    string name;
    int accountNumber;
    double balance;
};

int main() {
    int numAccounts = 0;
    const int MAX_ACCOUNTS = 10;
    Account accounts[MAX_ACCOUNTS];

    while (true) {
        int choice;
        cout << "请选择操作：" << endl;
        cout << "1. 添加账户" << endl;
        cout << "2. 取款" << endl;
        cout << "3. 存款" << endl;
        cout << "4. 查询余额" << endl;
        cout << "5. 退出" << endl;
        cin >> choice;

        switch (choice) {
            case 1: {
                if (numAccounts < MAX_ACCOUNTS) {
                    Account newAccount;
                    cout << "请输入账户名：" << endl;
                    cin >> newAccount.name;
                    cout << "请输入账户号码：" << endl;
                    cin >> newAccount.accountNumber;
                    cout << "请输入账户余额：" << endl;
                    cin >> newAccount.balance;
                    accounts[numAccounts] = newAccount;
                    numAccounts++;
                    cout << "账户添加成功！" << endl;
                } else {
                    cout << "账户数量已达上限，无法添加新账户。" << endl;
                }
                break;
            }
            case 2: {
                int accountNumber;
                double amount;
                cout << "请输入账户号码：" << endl;
                cin >> accountNumber;
                int i;
                for (i = 0; i < numAccounts; i++) {
                    if (accounts[i].accountNumber == accountNumber) {
                        cout << "请输入取款金额：" << endl;
                        cin >> amount;
                        if (amount > accounts[i].balance) {
                            cout << "余额不足，无法取款。" << endl;
                        } else {
                            accounts[i].balance -= amount;
                            cout << "取款成功。" << endl;
                        }
                        break;
                    }
                }
                if (i == numAccounts) {
                    cout << "账户不存在。" << endl;
                }
                break;
            }
            case 3: {
                int accountNumber;
                double amount;
                cout << "请输入账户号码：" << endl;
                cin >> accountNumber;
                int i;
                for (i = 0; i < numAccounts; i++) {
                    if (accounts[i].accountNumber == accountNumber) {
                        cout << "请输入存款金额：" << endl;
                        cin >> amount;
                        accounts[i].balance += amount;
                        cout << "存款成功。" << endl;
                        break;
                    }
                }
                if (i == numAccounts) {
                    cout << "账户不存在。" << endl;
                }
                break;
            }
            case 4: {
                int accountNumber;
                cout << "请输入账户号码：" << endl;
                cin >> accountNumber;
                int i;
                for (i = 0; i < numAccounts; i++) {
                    if (accounts[i].accountNumber == accountNumber) {
                        cout << "账户余额为：" << accounts[i].balance << endl;
                        break;
                    }
                }
                if (i == numAccounts) {
                    cout << "账户不存在。" << endl;
                }
                break;
            }
            case 5: {
                cout << "感谢使用本系统，再见！" << endl;
                return 0;
            }
            default: {
                cout << "无效操作，请重新输入。" << endl;
                break;
            }
        }
    }
}

以上代码只是一个简单的示例，可能还需要根据具体需求进行修改和完善。