Multiple Choice Questions on Which problem may arise if we use abstract class functions for polymorphism ........ for General Studies (Level 1) Preparation

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Multiple Choice Questions

Which problem may arise if we use abstract class functions for polymorphism ........

Computer GK Programming Language
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    Which problem may arise if we use abstract class functions for polymorphism?

    All classes are converted as abstract class

    Incorrect Answer

    Derived class must be of abstract type

    Incorrect Answer

    All the derived classes must implement the undefined functions

    Correct Answer

    Derived classes can’t redefine the function

    Incorrect Answer
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    Explanation:

    Answer: c
     The undefined functions must be defined is a problem, because one may need to implement few undefined functions from abstract class, but he will have to define each of the functions declared in abstract class. Being useless task, it is a problem sometimes.

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