task1 (oop lab 4) 3rd sem

#include<bits/stdc++.h>
using namespace std;
class SavingsAccount
{
private:
    static double AnnualInterestRate;
    double SavingsBalance;
    static int ObjectCreated;
    static int ObjectDestroyed;
public:
    SavingsAccount()
    {
        ObjectCreated++;
        cout<<"Object created "<<ObjectCreated<<endl;
    }
    ~SavingsAccount()
    {
        ObjectDestroyed++;
        cout<<"object destroyed "<<ObjectDestroyed<<endl;
    }
    void CalculateMonthlyInterest()
    {
        SavingsBalance=SavingsBalance+(SavingsBalance*AnnualInterestRate)/12;
    }
    static void ModifyInterestRate(double interest)
    {
        AnnualInterestRate=interest/100;
    }
    void SetSavings(double savings)
    {
        SavingsBalance=savings;
    }
    void display()
    {
        cout<<"The new balance is "<<SavingsBalance<<endl;
    }

};
double SavingsAccount::AnnualInterestRate=0.0;
int SavingsAccount::ObjectCreated=0;
int SavingsAccount::ObjectDestroyed=0;
int main()
{
    SavingsAccount saver1,saver2;
    saver1.SetSavings(2000.0);
    saver2.SetSavings(3000.0);

    SavingsAccount::ModifyInterestRate(3.00);
    saver1.CalculateMonthlyInterest();
    saver1.display();
    saver2.CalculateMonthlyInterest();
    saver2.display();

    SavingsAccount::ModifyInterestRate(4.00);
    saver1.CalculateMonthlyInterest();
    saver1.display();
    saver2.CalculateMonthlyInterest();
    saver2.display();

}