static void Main(string[] args) { //TupleTest ts = new TupleTest(233, 322); //Console.WriteLine(ts.getData1().Item1 + " " + ts.getData1().Item2); //ListProducts lst1 = new ListProducts(); //lst1[0] = new Product { id = 23, tensp = "ko biet" }; //Console.WriteLine(lst1[0].id); //AbClass sd = new AbClass { number = 2, number2 = 34 }; //Console.WriteLine(DaoNguocTen(" a Nguyen Binh An s ") + "||||"); //TamGiacCan(8); ConcreteClass1 c1 = new ConcreteClass1(); ConcreteClass1 c2 = new ConcreteClass1(); ConcreteClass1 c3 = new ConcreteClass1(); Ab_Class1 c4 = new ConcreteClass1(); Console.WriteLine(c1.getNCon()); Console.WriteLine(c1.getNNumber()); User user = new User.Builder().setName("An").setId(1).build(); }