Smart destructor

smart_dtor.cpp

#include <iostream>
#include <memory>

struct Base
{
    ~Base()
    {
        std::cout << "~Base()" << std::endl;
    }
};

struct Derived : Base
{
    ~Derived()
    {
        std::cout << "~Derived()" << std::endl;
    }
};

std::shared_ptr<Base> Factory(bool flag)
{
    if (flag)
    {
        return std::make_shared<Base>();
    }
    else
    {
        return std::make_shared<Derived>();
    }
}

int main()
{
    std::shared_ptr<Base> sp1 = Factory(false);
    std::shared_ptr<Base> sp2 = Factory(true);
    return 0;
}

// Source of inspiration:
// https://www.youtube.com/watch?v=ZiNGWHg5Z-o