static void Main(string[] args)
{
Director director = new Director();
Builder b1 = new ConcreteBuilderAdult();
Builder b2 = new ConcreteBuilderChild();
director.Construct(b1);
Sweets s1 = b1.GetSweets();
s1.Display();
director.Construct(b2);
Sweets s2 = b2.GetSweets();
s2.Display();
Console.ReadLine();
}