Object Oriented Programming in C++ MCQ question and answer with solution

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What is dynamic polymorphism in C++?

A) The process of hiding the implementation details of a class B) The ability of a function to perform different tasks based on the object that it is acting upon at runtime C) The process of defining functions within a class D) None of the above

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Answer: Option B

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Which keyword is used to specify that a function cannot be overridden in a derived class in C++?

A) abstract B) virtual C) final D) override

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Answer: Option C

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What is an abstract class in C++?

A) A class with no members B) A class with only private members C) A class with no implementation details D) A class that cannot be instantiated and is used as a base class for other classes

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Answer: Option D

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What is the purpose of friend functions in C++?

A) To allow access to private and protected members of a class from outside the class B) To create multiple instances of a class C) To hide the implementation details of a class D) To define functions within a class

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Answer: Option A

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What is the access specifier that allows members to be accessed only within the same class or by derived classes in C++?

A) internal B) private C) public D) protected

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Answer: Option D

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What is a constructor in C++?

A) A function used to create multiple instances of a class B) A function used to destroy objects C) A special member function that initializes objects D) A function that defines the implementation of a class

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Answer: Option C

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Which keyword is used to access the base class members from a derived class in C++?

A) super B) this C) parent D) base

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Answer: Option D

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What is operator overloading in C++?

A) Redefining a function within a class B) Defining multiple functions with the same name but different arguments C) Defining new operators for existing types D) None of the above

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Answer: Option B

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What is the purpose of a destructor in C++?

A) To provide an interface for a class B) To encapsulate data C) To clean up resources before an object is destroyed D) To create objects

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Answer: Option C

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Which access specifier allows a member to be accessible only within its own class and derived classes in C++?

A) public B) private C) internal D) protected

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Answer & Solution

Answer: Option D

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Object Oriented Programming in C++ MCQ question and answer with solution | C++ Programimg MCQs