“class” Terminology
For the list of videos data type we used
class list {   <--- the data type!!!
   public:
      list();   <--- the constructor
      int add (const video &);    3 member functions
      int remove (char title[]);
      int display_all();
   private:
      video my_list[CONST_SIZE];                 data members
        int num_of_videos;
}; <--- notice like structures we need a semicolon