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Source Code

The InterfaceHierarchy project is located under the Chapter 9 subdirectory.

Multiple Inheritance with Interface Types

Unlike class types, it is possible for a single interface to extend multiple base interfaces. This allows

us to design some very powerful and flexible abstractions. Create a new Console Application project

named MIInterfaceHierarchy. Here is a brand-new collection of interfaces that model various ren-

dering and shape-centric abstractions. Notice that the IShape interface is extending both IDrawable

and IPrintable: