When to use “delete”?

Question

I want to store 10 Obj object in objList, but i don\'t know when is appropriate use delete in this case. If i use delete Obj;

Answer 1

Well, the simple rule is that each variable constructed by new should be clean up by delete.

However depending on your goal, you may not need write the delete yourself.

At home, when learning the gory details of memory management, you will probably write as many delete as you write new.

Professionals, however, never use delete in applicative code (*). delete is a code smell. It's the shortest way to memory leaks in the presence of exceptions. Professionals use RAII to deal with exceptions safely, and namely: smart pointers/smart containers.

(*) as opposed to library code, ie someone wrote that shared_ptr class one day.