When does ambiguity arise in multiple inheritance? How can one resolve it? What are virtual base classes? What is their significance?
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When does ambiguity arise in multiple inheritance? How can one resolve it? What are virtual base classes? What is their significance?
When does ambiguity arise in multiple inheritance? How can one resolve it? What are virtual base classes? What is their significance?
An ambiguity can arise when several paths exist to a class from the same base class. This means that a child class could have duplicate sets of members inherited from a single base class. This can be solved by using a virtual base class.
When two or more objects are derived from a common base class, we can prevent multiple copies of the base class being present in an object derived from those objects by declaring the base class as virtual when it is being inherited. Such a base class is known as virtual base class. When a class is made virtual, necessary care is taken so that the duplication is avoided regardless of the number of paths that exist to the child class.