If I delete a class, are its member variables automatically deleted?

Question

I have been researching, and nothing relevant has come up, so I came here.

I am trying to avoid memory leaks, so I am wondering:

Say I have class MyCla

Answer 1

The rule is very simple: every object created with new must be destroyed exactly once with delete; every array created with new[] must be destroyed exactly once with delete[]; everything else must not be deleted. So your code is correct; you are deleting mc after creating it with new, and not deleting the members which were not created with new.

Applying the rule can be quite tricky when the program flow gets complicated (especially when exceptions are involved); for that reason, it is much better not to delete objects yourself, but to immediately use the result of new to initialise a smart pointer to manage the object for you.