For example, we defined the Food class, and then several specializations, such as the Meat and Fruit classes . We have also seen that a class hierarchy represents “is-a” relationships. Each instance of a subclass is also an instance of the parent class and all ancestors.
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In hierarchical inheritance, all features that are common in child classes are included in the base class. For example, Physics, Chemistry, Biology are derived from Science class. Similarly, Dog, Cat, Horse are derived from Animal class .
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