static void Main(string[] args) { QLSinhVien sv1 = new QLSinhVien(); sv1.nhap(); sv1.inTT(); DanhSach ds1 = new DanhSach(); ds1.nhap(); ds1.inthongtin(); Console.WriteLine(" sap xep la\n"); ds1.sapxep(); ds1.inthongtin(); Console.WriteLine(" diem >8 la\n"); ds1.danhsach1(); Console.ReadLine(); }