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I never considered composition in this case, but now I think it makes more sense. The trouble I have at times is understanding the 3 relationships my book refers too; "Has-A", "Is-A" and "Knows-A". ...

Thanks Laserlight. I have looked at abstract classes and it does not really fit into my design. I have not got any virtual functions and don't understand them at this time. I have decided to look...

I am trying to design and implement a program that consists of two classes. The Base class A is purely for supporting class B. I do not want to be able to create an object of class A. When object...