Someone explain to me why you need a virtual destructor? (In c++)

Answer 1

here you have the example, comments are in the code guys.
https://code.sololearn.com/cgrIXlszu299/#cpp

Answer 2

because if you create an virtual method which can be overwritten in an inherited class (it can allocate extra memory for example) you need to give a chance to destroy it by appropriate way (it can destroy this extra memory which is unreachable for parent destructor).

Answer 3

Highman can you give an example?

Answer 4

Thank you. Evrything became clear.

Answer 5

Do you know why you need virtual functions in general?