In practice,derived classes should depend only on the base-class services (that is,Private methods and properties)and not on the base-class data implementation.
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Q3: Polymorphism allows for specifics to be dealt
Q20: The class hierarchy begins with class _.
A)Object
B)Point
C)Root
D)Base
Q21: When a program creates a derived-class object,the
Q23: How can a derived class constructor ccall
Q24: For which of the following would polymorphism
Q26: To call the base-class default constructor explicitly,the
Q27: Which statement is true when a base
Q28: When a derived-class member overrides a base-class
Q29: When a request is made to use
Q30: Polymorphism involves:
A)the same message sent to a
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