Strange output Polymorphism

THX Vulpes.

It is calculating area of the circle correctly.

If you are talking about getting ZERO value for area/volume for Square/Cube, you are using local class variables for the calculation which is not assigned. If you want to use local variables, in the constructor of both Square and Cube classes, assign the value for the local variable(s).

Output:
shapeInheritanceApp.Shape[]Circle'area is ....

HI,

but why u dont download it?

Because it has so: 8 classes. Then u can see what I mean

this is program:

[code]
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ShapeInHeritanceApp
{
    class Program
    {
        static void Main(string[] args)
        {

            Shape[] shape = new Shape[4];
            shape[0] = new Circle(12, 13, 4);
            shape[1] = new Cube(4);
            shape[2] = new Triangle(44, 5);
            shape[3] = new Square(4);
           
            foreach (Shape currentShape in shape)
            {
                Console.Write("{0}: {1}", currentShape.ToString(), shape);

                if (currentShape is TwoDimensionalShape)
                {
                    TwoDimensionalShape twodimensionShape = (TwoDimensionalShape)currentShape;

                    Console.Write("{0}'s area is {1}\n", twodimensionShape.getName(), twodimensionShape.Area());
                }

                if (currentShape is ThreeDimensionalShape)
                {
                    ThreeDimensionalShape threeDimensional = (ThreeDimensionalShape)currentShape;
                    Console.Write("{0}'s area is {1}\n ", threeDimensional.getName(), threeDimensional.getArea());

                    Console.Write("{0}'s volume is:{1}\n", threeDimensional.getName(), threeDimensional.getVolume());
                   
                }
            }

            Console.ReadKey();
        }//end method
    }
}

[/code]

hello

could you post some details about your code and the strange output that you get?