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How containership is different than inheritance ?

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               Inheritance is the mechanism of deriving properties of one class into another. While containership is mechanism in which one class contain objects of other classes as its member.

                    class alpha{_ _ _ _ _ };
                    class beta{_ _ _ _ _ };
                     class gamma
                     {
                        alpha a;
                        beta b;
                      _ _ _ _ _ };

           All objects of gamma class will contain the objects a and b, this kind of relationship is called containership or nesting.
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