public static void Main()
{
Book b = new Book();
b.setbname("3 mistakes");
b.setid("1");
b.setauthor("Chetan Bhagat");
b.setprice("100");
Console.WriteLine("\n---Book---\nname:"+b.getbname()+"\nId:"+b.getid()+"\nAuthor:"+b.getauthor()+"\nPrice:"+b.getprice());
Console.ReadLine();
}