Classes and Objects in C++ MCQ question and answer with solution

1

What is a class in C++?

A) A collection of functions B) A reserved keyword in C++ C) A blueprint for creating objects D) A way to declare arrays of data

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Answer & Solution

Answer: Option C

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2

Which keyword is used to create an object of a class in C++?

A) new B) create C) object D) None of the above

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Answer & Solution

Answer: Option D

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3

What is an object in C++?

A) A reserved keyword in C++ B) An instance of a class C) A way to declare arrays of data D) None of the above

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Answer & Solution

Answer: Option B

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4

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

A) To hide the implementation details of a class B) To create multiple instances of a class C) To initialize the object's data members D) To destroy the object

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Answer: Option C

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5

Which access specifier allows members of a class to be accessed from outside the class in C++?

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

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Answer & Solution

Answer: Option D

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6

What is the correct syntax to define a member function outside the class in C++?

A) returnType functionName() {} B) returnType className::functionName() {} C) returnType className::functionName() D) returnType functionName(className) {}

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Answer: Option B

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7

What is the process of combining data and functions into a single unit called in C++?

A) Encapsulation B) Inheritance C) Polymorphism D) Abstraction

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Answer & Solution

Answer: Option A

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8

What does the 'this' pointer refer to in C++?

A) Pointer to the base class object instance B) Pointer to the next object instance C) Pointer to the previous object instance D) Pointer to the current object instance

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Answer: Option D

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9

Which keyword is used to declare a member function of a class as constant in C++?

A) static B) final C) const D) virtual

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Answer: Option C

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10

What is the purpose of the 'static' keyword in C++ class members?

A) To initialize objects of a class B) To create a single copy of the member shared by all objects C) To create multiple instances of a class D) None of the above

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Answer: Option B

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Classes and Objects in C++ MCQ question and answer with solution | C++ Programimg MCQs