C++ Destructors with Vectors, Pointers,

Question

As far as I know, I should destroy in destructors everything I created with new and close opened filestreams and other streams. However, I have some doubts abou

Answer 1

• if they are in automatic storage, yes. You can have std::string* s = new std::string, in which case you have to delete it yourself.

• nothing, you need to manually delete memory you own (for memory allocated with new).

• if you allocated b with new, you should destroy it in the destructor explicitly.

A good rule of thumb is to use a delete/delete[] for each new/new[] you have in your code.

A better rule of thumb is to use RAII, and use smart pointers instead of raw pointers.