Does delete on a pointer to a subclass call the base class destructor?

Question

I have an class A which uses a heap memory allocation for one of its fields. Class A is instantiated and stored as a pointer field in another class (clas

Answer 1

no it will not call destructor for class A, you should call it explicitly (like PoweRoy told), delete line 'delete ptr;' in example to compare ...

  #include 

  class A
  {
     public:
        A(){};
        ~A();
  };

  A::~A()
  {
     std::cout << "Destructor of A" << std::endl;
  }

  class B
  {
     public:
        B(){ptr = new A();};
        ~B();
     private:
        A* ptr;
  };

  B::~B()
  {
     delete ptr;
     std::cout << "Destructor of B" << std::endl;
  }

  int main()
  {
     B* b = new B();
     delete b;
     return 0;
  }