What is the use of virtual base class in multilevel inheritance?

Question

This was an exam question.

Write a program demonstrating the use of virtual base classes in multilevel inheritance.

I cannot think of any scenario in which a virtual base class would actually make any difference in the specific case of multilevel inheritance.

The only possible answer to the question i can think of is to show hybrid inheritance(the diamond) which contains multilevel inheritance in it.

Any ideas would be appreciated.

"I cannot think of any scenario", then "I can think of this one answer"... So, what is the question? — R. Martinho Fernandes, Nov 19 '12 at 13:24
@R.MartinhoFernandes: *This was an exam question: Write ...* — David Rodríguez - dribeas, Nov 19 '12 at 13:24
The question is a bit confusing, I assume they mean multi-level multiple inheritance - the concept which you describe as the diamond. — Elemental, Nov 19 '12 at 13:27
Possible duplicate of [In C++, what is a virtual base class?](http://stackoverflow.com/questions/21558/in-c-what-is-a-virtual-base-class) — kgf3JfUtW, Nov 22 '16 at 21:40

score 2 · Accepted Answer · edited May 23 '17 at 12:07

2

You answered your question. The answer is the case with the diamond. For the reason and why to use see this question:
In C++, what is a virtual base class?

edited May 23 '17 at 12:07

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answered Nov 19 '12 at 13:27

totymedli

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What is the use of virtual base class in multilevel inheritance?

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