public static void Main_3_5_1()//Main_3_5_1
{
Fathers person = new Grandsons();
person.DoVirtualWork();
Sons son = new Sons();
son.DoVirtualWork();
//Sons a = new Grandsons();
//a.M();
Console.Read();
}
//Main_3_5_1
public static void Main_3_5_1()
{
Fathers person = new Grandsons();
person.DoVirtualWork();
Sons son = new Sons();
son.DoVirtualWork();
//Sons a = new Grandsons();
//a.M();
Console.Read();
}