static void Main(String[] args)
{
Rect re = new Rect();
Square sq = new Square(); // heirarichal inheritance
Cube cu = new Cube(); // multi-level inheritance
Multiple mu = new Multiple(); //Multiple inheritance
re.setdim(50, 60); //sets width 50 and height 60
sq.setdim(30); //sets length as 30
cu.setdim(40); //sets length as 40
mu.Length(); //length for M1 interface
mu.Width(); //width for M2 interface
Console.WriteLine("Area of rectangle is : " + re.getarea());
Console.WriteLine("Area of Square using heirarichal inheritance is : " + sq.getarea());
Console.WriteLine("Area of Cube using multi level inheritance is : " + cu.getcube());
Console.WriteLine("Area using multiple inheritance is : " + mu.area());
}
