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virtual key word
can access any private member of the base class through the derived class FUNCTION IF IT IS VIRTUAL?
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OBJECT and INSTANCE
What Is The Difference Between Object and Instance?
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What is namespace?
Namespaces allow us to group a set of global classes, objects and/or functions under a name. To say it somehow, they serve to split the global scope in sub-scopes known as namespaces. The form to use namespaces is: namespace identifier { namespace-body }Where identifier is any valid identifier and namespace-body is the set of classes, objects and functions that are included...
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What is a scope resolution operator?
A scope resolution operator (::), can be used to define the member functions of a class outside the class.