Question

I have a C++ class, MyClass. It contains a constructor, destructor and an int pointer private: int *MyPtr;.

Somewhere, I allocate dynamically a MyClass Object:

MyClass *my = new MyClass(); //...

Then I call delete my;

Should MyClass have a destructor which uses something like delete MyPtr? Or is that MyPtr destroyed when I call delete my?

Answer 1

Or is that MyPtr destroyed when I call delete my?

No, when you call delete my; this will call the destructor of MyClass and unless you explicitly delete MyPtr in the destructor you will have a memory leak.

Should MyClass have a destructor which uses something like delete MyPtr?

Always delete dynamically allocated memory in your destructor – that is what destructors are meant for.