OOPS Concepts Questions and Answers updated daily – C++

25 OOPS Concepts Questions and answers section with explanation for various online exam preparation, various interviews, C++ OOPS Concepts online test. OOPS Concepts Questions with detailed description, explanation will help you to master the topic.

OOPS Concepts Questions

1.   Which of the following approach is adapted by C++?


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Correct Ans:Bottom-up
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2. Which of the following concepts means determining at runtime what method to invoke?


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Correct Ans:Dynamic binding
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3. Which of the following is not the member of class?


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Correct Ans:Friend function
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4. Which of the following is not a type of constructor?


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Correct Ans:Friend constructor
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5. Which of the following type of class allows only one object of it to be created?


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Correct Ans:Singleton class
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6. Which of the following are available only in the class hierarchy chain?


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Correct Ans:Protected data members
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7. Which of the following is correct about the statements given below?All operators can be overloaded in C++.We can change the basic meaning of an operator in C++.


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Correct Ans:Both I and II are false.
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8. Which of the following is a mechanism of static polymorphism?


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Correct Ans:All of the above
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9. Which of the following header file includes definition of cin and cout?


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Correct Ans:iostream.h
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10. Which one of the following is the correct way to declare a pure virtual function?


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Correct Ans:virtual void Display(void) = 0;
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11. Which of the following statements regarding inline functions is correct?


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Correct Ans:Both A and C.
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12. In which of the following a virtual call is resolved at the time of compilation?


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Correct Ans:Both A and B.
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13. Which of the following operators cannot be overloaded?


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Correct Ans:?:
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14. Which of the following is an invalid visibility label while inheriting a class?


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Correct Ans:friend
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15. Which one of the following is correct about the statements given below?All function calls are resolved at compile-time in Procedure Oriented Programming.All function calls are resolved at compile-time in OOPS.


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Correct Ans:Only I is correct.
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16. Which inheritance type is used in the class given below? class A : public X, public Y {}


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Correct Ans:Multiple inheritance
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17. What will happen if a class is not having any name?


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Correct Ans:Both A and B.
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18. Which of the following keyword is used to overload an operator?


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Correct Ans:operator
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19. What is correct about the static data member of a class?


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Correct Ans:Both A and B.
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20. Which of the following access specifier is used as a default in a class definition?


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Correct Ans:private
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21. Which of the following is used to make an abstract class?


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Correct Ans:Making at least one member function as pure virtual function.
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22. Which of the following statements is correct in C++?


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Correct Ans:Structures can have functions as members.
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23. Which one of the following options is correct?


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Correct Ans:All of the above.
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24. Which of the following statement is correct?


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Correct Ans:Object is an instance of a class.
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25. Which of the following provides a reuse mechanism?


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Correct Ans:Inheritance
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