How to declare an interface in C++? (pure virtual functions and abstract classes)

Hello! I just started learning C++ after Java, and I'm very confused by the absence of the `interface` keyword, like in Java or C#. In Java, I'm used to doing this: ```java public interface Drawable { void draw(); void resize(int width, int height); } ``` But in C++, I can't find a direct analog. I know that C++ has abstract classes with pure virtual functions, but I'm not sure how to properly declare and use them. For example, I tried writing this code: ```cpp class Drawable { public: virtual void draw() = 0; virtual void resize(int width, int height) = 0; }; ``` But I have some questions: 1. Do I need to add a virtual destructor? If yes, should it be pure virtual? 2. Do I need to prevent copying of objects of such a class?