🎧 New: AI-Generated Podcasts Turn your study notes into engaging audio conversations. Learn more

C++ Polymorphism and Virtual Functions Quiz
6 Questions
8 Views

C++ Polymorphism and Virtual Functions Quiz

Created by
@AdaptiveMossAgate

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which keyword is used in C++ to implement polymorphism?

  • override
  • dynamic
  • static
  • virtual (correct)
  • What is the purpose of virtual functions in C++?

  • To allow a base class to override a derived class function
  • To prevent a derived class from modifying a base class function
  • To allow a derived class to override a base class function (correct)
  • To enforce encapsulation in a class hierarchy
  • What is polymorphism in C++?

  • The ability of a function to return different types
  • The ability of objects of different classes to be treated as if they were objects of the same class (correct)
  • The ability of a class to have multiple constructors
  • The ability of a function to take arguments of different types
  • Which of the following statements about virtual functions in C++ is true?

    <p>Virtual functions are resolved at runtime based on the dynamic type of the object</p> Signup and view all the answers

    Which of the following is NOT a characteristic of polymorphism in C++?

    <p>It allows objects of different types to be treated as if they are of the same type</p> Signup and view all the answers

    Which of the following is a disadvantage of using virtual functions in C++?

    <p>They can introduce performance overhead due to dynamic dispatch</p> Signup and view all the answers

    Study Notes

    Polymorphism in C++

    • Keyword for Polymorphism: The virtual keyword is used in C++ to implement polymorphism.
    • Purpose of Virtual Functions: Virtual functions in C++ allow for runtime polymorphism, enabling the correct function to be called based on the object's type, rather than the reference or pointer type.

    Virtual Functions

    • True Statement: A true statement about virtual functions in C++ is that they can be overridden by derived classes.
    • Not a Characteristic of Polymorphism: Polymorphism is not limited to inheritance; it can also be achieved through function overloading and operator overloading.

    Disadvantages of Virtual Functions

    • Disadvantage: One disadvantage of using virtual functions in C++ is that they can result in slower performance due to the overhead of dynamic dispatch.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge of C++ polymorphism and virtual functions with this quiz! Learn how to implement polymorphism using the correct keyword in C++, and understand the importance of virtual functions in achieving this. Challenge yourself to define polymorphism in C++ and demonstrate your understanding of this fundamental programming concept. This quiz is perfect for anyone looking to enhance their C++ skills and advance their programming knowledge.

    More Quizzes Like This

    Use Quizgecko on...
    Browser
    Browser