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.

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 3 of 9

Explore more Topics under Object Oriented Programming

01

OOPs Concept and Features

02

Objects and Classes in OOPs

03

Access Specifiers

04

Class Members

05

Member Functions

06

Inheritance and its Types

07

Exception Handling

08

Objects and Pointers

09

Memory Allocation and Variable Scope

10

Overloading

11

Inbuilt Classes

Q21.

Which type of constructor can’t have a return type?

Default

Parameterized

Copy

Constructors don’t have a return type

Discuss

Answer: (d).Constructors don’t have a return type

Q22.

Why do we use static constructors?

To initialize the static members of class

To initialize all the members with static value

To delete the static members when not required

To clear all the static members initialized values

Discuss

Answer: (a).To initialize the static members of class

Q23.

When and how many times a static constructor is called?

Created at time of object destruction

Called at first time when an object is created and only one time

Called at first time when an object is created and called with every new object creation

Called whenever an object go out of scope

Discuss

Answer: (b).Called at first time when an object is created and only one time

Q24.

Which among the following is true for static constructor?

Static constructors are called with every new object

Static constructors are used initialize data members to zero always

Static constructors can’t be parameterized constructors

Static constructors can be used to initialize the non-static members also

Discuss

Answer: (c).Static constructors can’t be parameterized constructors

Q25.

Within a class, only one static constructor can be created.

True

False

May be

Can't say

Discuss

Answer: (a).True

Q26.

Default constructor initializes all data members as:

All numeric member with some garbage values and string to random string

All numeric member with some garbage values and string to null

All numeric member with zero and strings to random value

All numeric member with zero and strings to null

Discuss

Answer: (d).All numeric member with zero and strings to null

Q27.

When is the static constructor called?

After the first instance is created

Before default constructor call of first instance

Before first instance is created

At time of creation of first instance

Discuss

Answer: (c).Before first instance is created

Q28.

If constructors of a class are defined in private access, then:

The class can’t be inherited

The class can be inherited

Instance can be created only in another class

Instance can be created anywhere in the program

Discuss

Answer: (a).The class can’t be inherited

Q29.

Which among the following is correct, based on the given code below:

class student
{ 
 int marks;
 public : student()
 {  
  cout<<”New student details can be added now”;
 }
};
student s1;

Cout can’t be used inside the constructor

Constructor must contain only initializations

This program works fine

This program produces errors

Discuss

Answer: (c).This program works fine

Q30.

Copy constructor is a constructor which ________________

Creates an object by copying values from any other object of same class

Creates an object by copying values from first object created for that class

Creates an object by copying values from another object of another class

Creates an object by initializing it with another previously created object of same class

Discuss

Answer: (d).Creates an object by initializing it with another previously created object of same class

Page 3 of 9

Welcome to the Constructors and Destructors MCQs Page

Constructors and Destructors MCQs | Page 3 of 9

Explore more Topics under Object Oriented Programming

OOPs Concept and Features

Objects and Classes in OOPs

Access Specifiers

Class Members

Member Functions

Inheritance and its Types

Exception Handling

Objects and Pointers

Memory Allocation and Variable Scope

Overloading

Inbuilt Classes

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