In class constructor and destructor call virtual functions

test_virtual_func.cc

#include <iostream>

class Base {
    public:
        Base() {
            std::cout << "Base Constructor" << std::endl;
            ctor();
        }
        virtual ~Base() {
            std::cout << "Base Destructor" << std::endl;
            dtor();
        }
        virtual void ctor() {
            std::cout << "in Base::ctor" << std::endl;
        }
        virtual void dtor() {
            std::cout << "in Base::dtor" << std::endl;
        }
};
class Derived: public Base {
    public:
        Derived() {
            std::cout << "Derived Constructor" << std::endl;
            ctor();
        }
        ~Derived() {
            std::cout << "Derived Destructor" << std::endl;
            dtor();
        }
        virtual void ctor() {
            std::cout << "in Derived::ctor" << std::endl;
        }
        virtual void dtor() {
            std::cout << "in Derived::dtor" << std::endl;
        }
};

int main() {
    Base *pb = new Derived();
    delete pb;
}

g++ -std=c++14 -g -Wall -Wextra -pedantic -pthread -pedantic-errors test_vitual_func.cc
./a.out
Base Constructor
in Base::ctor
Derived Constructor
in Derived::ctor
Derived Destructor
in Derived::dtor
Base Destructor
in Base::dtor