samiksc

 Profile Answers by samiksc 

• Jan 19th, 2006

 

At the time of constructing the object the type is given as input (B *ptr = new D) here it is clearly known that D's constructor is to be called. However while destroying, delete ptr; does not make it clear whether to call B's destructor (looking at the type of pointer) or to call D's destructor (looking at the type of object). So a virtual destructor helps in this case to call D's destrcutor.