static void Main(string[] args)
{
Program P = new Program();
Program P2 = new Program();
Ical obj = (Ical)P2;
IcalA obj2 = (IcalA)P2;
Console.WriteLine(P.square(5));
Console.WriteLine(obj.cube(5));
Console.WriteLine(obj2.cube(5));
Console.WriteLine(P.meth1(5));
Console.Read();
}
