using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace KOP_Labs.Classes { public class Book { public int Id { get; private set; } public string Name { get; private set; } = string.Empty; public string Annotation { get; private set; } = string.Empty; public Book() { } public Book(int id, string name, string annotation) { Id = id; Name = name; Annotation = annotation; } } }