static void Main(string[] args) { //创建管理员对象 Management M = new Management(); //创建流动库对象 BookLibrary bl = new BookLibrary(); M.SetLibrary(bl); //展示书籍 bl.Books(); M.AddBook(); M.ShowBook(); //跟借阅者交互 Borrowers B = new Borrowers(); B.BorrowerPeople(bl); //借书 B.Borrow(bl); //还书 B.Return(bl); Console.ReadKey(); }