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  • Question
  • Which of the following statements about virtual base classes is correct?


  • Options
  • A. It is used to provide multiple inheritance.
  • B. It is used to avoid multiple copies of base class in derived class.
  • C. It is used to allow multiple copies of base class in a derived class.
  • D. It allows private members of the base class to be inherited in the derived class.

  • Correct Answer
  • It is used to avoid multiple copies of base class in derived class. 


  • Objects and Classes problems


    Search Results


    • 1. What does the class definitions in following code represent?
      class Bike
      {
          Engine objEng;
      };
      class Engine
      {
          float CC;
      };

    • Options
    • A. kind of relationship
    • B. has a relationship
    • C. Inheritance
    • D. Both A and B
    • Discuss
    • 2. How can we make a class abstract?

    • Options
    • A. By making all member functions constant.
    • B. By making at least one member function as pure virtual function.
    • C. By declaring it abstract using the static keyword.
    • D. By declaring it abstract using the virtual keyword.
    • Discuss
    • 3. Which of the following statements is correct about the constructors and destructors?

    • Options
    • A. Destructors can take arguments but constructors cannot.
    • B. Constructors can take arguments but destructors cannot.
    • C. Destructors can be overloaded but constructors cannot be overloaded.
    • D. Constructors and destructors can both return a value.
    • Discuss
    • 4. Which of the following function / types of function cannot have default parameters?

    • Options
    • A. Member function of class
    • B. main()
    • C. Member function of structure
    • D. Both B and C
    • Discuss
    • 5. Which of the following function prototype is perfectly acceptable?

    • Options
    • A. int Function(int Tmp = Show());
    • B. float Function(int Tmp = Show(int, float));
    • C. Both A and B.
    • D. float = Show(int, float) Function(Tmp);
    • Discuss
    • 6. Which of the following type of data member can be shared by all instances of its class?

    • Options
    • A. Public
    • B. Inherited
    • C. Static
    • D. Friend
    • Discuss
    • 7. Which of the following statement is correct with respect to the use of friend keyword inside a class?

    • Options
    • A. A private data member can be declared as a friend.
    • B. A class may be declared as a friend.
    • C. An object may be declared as a friend.
    • D. We can use friend keyword as a class name.
    • Discuss
    • 8. Which of the following statements are correct for a static member function?

      1. It can access only other static members of its class.
      2. It can be called using the class name, instead of objects.

    • Options
    • A. Only 1 is correct.
    • B. Only 2 is correct.
    • C. Both 1 and 2 are correct.
    • D. Both 1 and 2 are incorrect.
    • Discuss
    • 9. Which of the following statements is correct when a class is inherited publicly?

    • Options
    • A. Public members of the base class become protected members of derived class.
    • B. Public members of the base class become private members of derived class.
    • C. Private members of the base class become protected members of derived class.
    • D. Public members of the base class become public members of derived class.
    • Discuss
    • 10. Which of the following access specifies is used in a class definition by default?

    • Options
    • A. Protected
    • B. Public
    • C. Private
    • D. Friend
    • Discuss


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