static void Main(string[] args) { IBorrowableDVD DVD = new DVD(); IBorrowableDVD movie = new DigitalMovie(); Console.ReadLine(); }
static void Main(string[] args) { IBorrowableDVD dvd = new DVD(); IBorrowableDVD digitalMovie = new DigitalMovie(); IBorrowableBook harryPotter = new Book(); IBook libraryRefBook = new ReferenceBook(); Console.ReadLine(); }