Multilevel Inheritance without Overriding in C++

#include <iostream>
 
class Base {
    int i;
    public:
        Base(int i = 0): i(i) { }
        int val() const { return i; }
        virtual ~Base() { }
};
 
class Derived : public Base
{
    int i;
    public:
        Derived(int i = 0): i(i) { }
        int val() const { return i; }
        virtual ~Derived() {}
};
 
class MostDerived : public Derived 
{
    int i;
    public:
        MostDerived(int i = 0): i (i) { }
        int val() const { return i; }
        virtual ~MostDerived() { }
};
 
int main()
{
    Base* B = new Base(1);
    Base* D = new Derived(2);
    Base* MD = new MostDerived(3);
 
    std::cout << "Base.Value() = " << B->val() << std::endl;
    std::cout << "Derived.Value() = " << D->val() << std::endl;
    std::cout << "MostDerived.Value() = " << MD->val() << std::endl;
}

Output:
Base.Value() = 1
Derived.Value() = 0
MostDerived.Value() = 0