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

11

Which type of function is used to destroy objects in C++?

A) Friend function B) Member function C) Destructor D) Constructor

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Answer & Solution

Answer: Option C

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12

What is the default access specifier for members of a class in C++?

A) public B) protected C) None of the above D) private

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Answer & Solution

Answer: Option D

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13

Which operator is used to access members of an object in C++?

A) Dot operator (.) B) Arrow operator (->) C) Double colon (::) D) Star operator (*)

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Answer & Solution

Answer: Option A

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14

What is the difference between a constructor and a destructor in C++?

A) Constructor is called when an object is destroyed, while destructor is called when an object is created B) Constructor is used to initialize objects, while destructor is used to free resources C) Constructor is called when an object is created, while destructor is called when an object is destroyed D) Constructor is used to free resources, while destructor is used to initialize objects

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Answer: Option C

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15

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

A) To define objects within a class B) To release resources acquired by the object C) To perform calculations with object data D) None of the above

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Answer & Solution

Answer: Option B

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16

Which keyword is used to declare a class in C++?

A) object B) typedef C) class D) struct

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Answer & Solution

Answer: Option C

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17

What is the purpose of the static member variable in C++?

A) To initialize objects of a class B) To define objects within a class C) To release resources acquired by the object D) To maintain common data for all objects

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Answer & Solution

Answer: Option D

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18

Which operator is used to access members of a class through a pointer in C++?

A) Arrow operator (->) B) Dot operator (.) C) Double colon (::) D) Star operator (*)

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Answer & Solution

Answer: Option A

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19

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

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

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Answer & Solution

Answer: Option C

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20

Which access specifier allows members of a class to be accessed only by the derived classes in C++?

A) public B) protected C) friend D) None of the above

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Answer & Solution

Answer: Option B

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