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Welcome to the Constructors and Destructors MCQs Page

Dive deep into the fascinating world of Constructors and Destructors with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Constructors and Destructors, a crucial aspect of Object Oriented Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Constructors and Destructors, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Object Oriented Programming.

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Check out the MCQs below to embark on an enriching journey through Constructors and Destructors. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Object Oriented Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Constructors and Destructors. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Constructors and Destructors MCQs | Page 1 of 9

Explore more Topics under Object Oriented Programming

Q1.
Which among the following is called first, automatically, whenever an object is created?

a.

Class

b.

Constructor

c.

New

d.

Trigger

Discuss
Answer: (b).Constructor
Q2.
Which among the following is not a necessary condition for constructors?

a.

Its name must be same as that of class

b.

It must not have any return type

c.

It must contain a definition body

d.

It can contains arguments

Discuss
Answer: (c).It must contain a definition body
Q3.
In which access should a constructor be defined, so that object of the class can be created in any function?

a.

Public

b.

Protected

c.

Private

d.

Any access specifier will work

Discuss
Answer: (a).Public
Q4.
How many types of constructors are available for use in general (with respect to parameters)?

a.

2

b.

3

c.

4

d.

5

Discuss
Answer: (a).2
Q5.
If a programmer defines a class and defines a default value parameterized constructor inside it.
He has not defined any default constructor. And then he try to create the object without passing arguments, which among the following will be correct?

a.

It will not create the object (as parameterized constructor is used)

b.

It will create the object (as the default arguments are passed )

c.

It will not create the object ( as the default constructor is not defined )

d.

It will create the object ( as at least some constructor is defined )

Discuss
Answer: (b).It will create the object (as the default arguments are passed )
Q6.
Default constructor must be defined, if parameterized constructor is defined and the object is to be created without arguments.

a.

True

b.

False

c.

May be

d.

Can't say

Discuss
Answer: (a).True
Q7.
If class C inherits class B. And B has inherited class A. Then while creating the object of class C, what will be the sequence of constructors getting called?

a.

Constructor of C then B, finally of A

b.

Constructor of A then C, finally of B

c.

Constructor of C then A, finally B

d.

Constructor of A then B, finally C

Discuss
Answer: (d).Constructor of A then B, finally C
Q8.
In multiple inheritance, if class C inherits two classes A and B as follows, which class constructor will be called first: 
class A{ };
class B{ };
class C: public A, public B{  };

a.

A()

b.

B()

c.

C()

d.

Can’t be determined

Discuss
Answer: (a).A()
Q9.
Which among the following is true for copy constructor?

a.

The argument object is passed by reference

b.

It can be defined with zero arguments

c.

Used when an object is passed by value to a function

d.

Used when a function returns an object

Discuss
Answer: (b).It can be defined with zero arguments
Q10.
If the object is passed by value to a copy constructor:

a.

Only public members will be accessible to be copied

b.

That will work normally

c.

Compiler will give out of memory error

d.

Data stored in data members won’t be accessible

Discuss
Answer: (c).Compiler will give out of memory error
Page 1 of 9

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