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Asked: 2026-05-26T06:07:10+00:00

I have 3 classes, A , B , and C where B is an

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I have 3 classes, A, B, and C where B is an A and C is an A.

These classes are designed to retain history, so A provides a virtual method that derived classes can create to be notified when the history should be archived, called void archive().

Now suddenly there is a need to have the information from A, B, and C in a single class and I am not sure the best approach.

I thought about creating a new class D that inherits from B and C, and changing their inheritance to virtual public A to avoid diamond problem and have D::archive() simply call B::archive() and C::archive().

Is this a good approach? Or should I redesign the 4 classes such that I don’t use multiple inheritance?

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  1. Editorial Team

    Your approach is the standard one. C++ has multiple-inheritance, and you should feel free to use it. It looks like you know how to do it correctly.

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