Question

Assume I have a structure with two pointers each pointing to an object that has an implemented destructor. Also assume that the head points to a Listnode structure that has a non-NULL value *student and *next:

struct Listnode {    
  Student *student;
  Listnode *next;
};
Listnode *head =  new Listnode;

If I use the delete reserve word on the Listnode pointer ‘head’ will it call the destructors within that structures Student class and Listnode class which ‘student’ and ‘next’ point-to respectively. In other words, will deleting *head also delete *student and *next provided head was the only pointer to that Listnode

Answer 1

Not unless your destructor ~Listnode calls delete on the pointers. Calling delete will, however, invoke the destructors of non-pointer members.