class Account 
{
protected:
    float m_balance;
public:
    float getBalance() {
        return m_balance; 
    }
    void deposit(float money)
    {
        m_balance += money;
    }
    void  withdraw(float money)
    {
        if (money <= m_balance )
                m_balance -= money;
    }
};
class SavingAccount:public Account {
private:
    int m_period;
    float m_rate;
    int m_duration;
public:
    SavingAccount();
    float calcInterest(Date temp);





};