编写一个基本账户类。成员变量包括：账号、储户姓名和存款余额，成员函数包括：存款和取款。编写一个测试程序进行测试。

好的，以下是基本账户类的代码：

class Account {
private:
string accountNumber; // 账号
string accountHolder; // 储户姓名
double balance; // 存款余额
public:
Account(string accountNumber, string accountHolder, double balance) {
this->accountNumber = accountNumber;
this->accountHolder = accountHolder;
this->balance = balance;
}
void deposit(double amount) { // 存款
balance += amount;
}
void withdraw(double amount) { // 取款
if (balance >= amount) {
balance -= amount;
} else {
cout << "余额不足！" << endl;
}
}
};

测试程序如下：

int main() {
Account myAccount("123456789", "张三", 100.);
myAccount.deposit(500.);
myAccount.withdraw(200.);
myAccount.withdraw(150.);
return ;
}

输出结果为：

余额不足！