C# Programming Challenge 12.10: Shape Inheritance Hierarchy

Visual C# 2012 How to Program
C# Programming Challenge 12.10: Shape Hierarchy (C# OOP, C# abstract classes, C# inheritance, C# polymorphism)

Implement the Shape hierarchy. Each TwoDimensionalShape should contain read-only abstract property Area to calculate the area of the two-dimensional shape.

Each ThreeDimensionalShape should have read-only abstract properties Area and Volume to calculate the surface area and volume, respectively, of the three-dimensional shape.

Create an app that uses an array of Shape references to objects of each concrete class in the hierarchy. Display a text description of the object to which each array element refers. Also, in the loop that processes all the shapes in the array, determine whether each shape is a TwoDimensionalShape or a ThreeDimensionalShape. If a shape is a TwoDimensionalShape, display its area. If a shape is a ThreeDimensionalShape, display its area and volume.

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