Scribd
Upload
1K views4 pages

MCQ

This document contains 20 multiple choice questions testing concepts in C++ object oriented programming. The concepts covered include abstraction, encapsulation, data hiding, inheritance, polymorphism, abstract classes, virtual functions, constructors, destructors, and function overloading. For each question, the correct answer is provided.

Uploaded by

Saranya
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
1K views4 pages

MCQ

This document contains 20 multiple choice questions testing concepts in C++ object oriented programming. The concepts covered include abstraction, encapsulation, data hiding, inheritance, polymorphism, abstract classes, virtual functions, constructors, destructors, and function overloading. For each question, the correct answer is provided.

Uploaded by

Saranya
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
You are on page 1/ 4

Q) The OOPs concept in C++, exposing only necessary information to users or

clients is known as
A. Abstraction
B. Encapsulation
C. Data hiding
D. Hiding complexity

Answer: A

Q) Which of the following is an abstract data type?


A. Class
B. Int
C. String
D. Double

Answer: A

Q) Hiding the complexity is known as


A. Abstraction
B. Encapsulation
C. Data hiding
D. Composition

Answer: B

Q) For Cat and Animal class, correct way of inheritance is


A. class Cat: public Animal
B. class Animal: public Cat
C. Both are correct way
D. None is correct way

Answer: A

) In a class, encapsulating an object of another class is called


A. Composition
B. Inheritance
C. Encapsulation
D. None
Answer: A
Q) Features not available in C++ object oriented programming is
A. Virtual destructor
B. Virtual constructor
C. Virtual function
D. All
Answer: B

Q) IS A relationship in C++ is
A. Inheritance
B. Encapsulation
C. Composition
D. None
Answer: A
Q) If you want to write multiple functions in a class with same name, then what
C++ feature will you use?
A. Function overriding
B. Encapsulation
C. Function overloading
D. None

Answer: C

Q) Polymorphism types is/are


A. Compile time
B. Run time
C. Both
D. None

Answer: C

Q) If I want to have common functions in a class and want to defer


implementations of some other functions to derived classes, then we need to use
A. An interface
B. An abstract class
C. A friend class
D. A static class
Answer: B
Q) Not using virtual destructor feature in a C++ object oriented programing can
cause
A. Memory leak
B. An Issue in creating object of the class
C. An issue in calling base class destructor
D. Nothing
Answer: A

Q) Which C++ oops feature is related to re-usability?


A. Encapsulation
B. Inheritance
C. Abstraction
D. None
Answer: A

A constructor that accepts __________ parameters is called the default constructor.


A. one

B. two

C. no

Three
D.
Option C

2. What happens when a class with parameterized constructors and having no default constructor
is used in a program and we create an object that needs a zero-argument constructor?
A. Compile-time error.

B. Preprocessing error.

C. Runtime error.

D. Runtime exception. Option A

3. Can a class have virtual destructor?


A. Yes

B. No Option A

4. Destructor has the same name as the constructor and it is preceded by ______ .
A. !
B. ?

C. ~

D. $

Option C

5. For automatic objects, constructors and destructors are called each time the objects
A. enter and leave scope

B. inherit parent class

C. are constructed

D. are destroyed
Option A

You might also like