Why is my destructor never called?

Question

I have a base class A and a derived class B:

class A
{
public:
    virtual f();
};

class B : public A
{
public:
     B()
     {
         p = new char [100];
            


        

Answer 1

Your base class needs a virtual destructor. Otherwise the destructor of the derived class will not be called, if only a pointer of type A* is used.

Add

virtual ~A() {};

to class A.