摘要:
1 interface IUser 2 { 3 void Insert(User user); 4 User GetUser(int id); 5 } 6 7 class User 8 { 9 private int _id; 10 private string _name; 11 12 publi 阅读全文
摘要:
1 abstract class LeiFeng 2 { 3 public abstract void Sweep(); 4 public abstract void Wash(); 5 public abstract void BuyRice(); 6 } 7 8 class Undergradu 阅读全文