static void Main(string[] args)
{
// only child class is instantiated in abstract class
MyBook myBook = new MyBook("harry potter", "J.K.Rowling", 14);
myBook.display();
}
private static void Main(string[] args)
{
string title = Console.ReadLine();
string author = Console.ReadLine();
int price = int.Parse(Console.ReadLine());
Book new_novel = new MyBook(title, author, price);
new_novel.display();
}
public static void Main(String[] args)
{
String title = Console.ReadLine();
String author = Console.ReadLine();
int price = Int32.Parse(Console.ReadLine());
Book new_novel = new MyBook(title, author, price);
new_novel.display();
}