Constructors

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Class 10 Computer Applications Chapter 4
Constructors
Important Questions

Here are some class 10 Constructors important questions and answers. Tailored to assist students in reinforcing their comprehension of fundamental concepts from the preceding class, these inquiries span various question formats. The purpose is to nurture a solid understanding of core principles, address uncertainties, and foster adept problem-solving skills. Engaging with these queries aims to fortify exam readiness, amplify confidence, and refine crucial proficiencies necessary for excelling in the ICSE Class 10 Computer Applications Examination.

Table of Contents

Introduction

The Constructors chapter in ICSE Class 10 Computer Applications introduces a pivotal programming concept focusing on the creation and initialization of objects within software development. Constructors serve as specialized methods responsible for initializing object attributes and preparing them for use. Understanding constructors is essential for students diving into object-oriented programming paradigms and forms a crucial foundation for advanced programming concepts. Practising ICSE class 10 computer important questions of Constructors will help students understand the concepts better.

What are Constructors?

Constructors in programming are specialized methods within a class that are responsible for initializing the objects created from that class. They ensure that the object is properly initialized by assigning initial values to its attributes or properties. Constructors have the same name as the class and do not have a return type, not even void. These concepts are crucial for students preparing for ICSE Class 10 computer exams. Solving constructors important questions for class 10 ICSE essential for a comprehensive understanding and successful examination preparation. Explore further with oswal.io for ICSE class 10 important questions 2024 constructors to strengthen your knowledge in these fundamental areas of computer.

Class 10 Constructors Important Questions and Answers

Q1. Default constructor requires how many parameters?

Options

(a) 3
(b) 0
(c) 2
(d) 1

Ans. (b)
Explanation:
Default constructors have no parameters, but they can have parameters with default values.

Q2. Among the following Statements, Which are true about Constructors?

(I) a new operator automatically calls them.
(II) they cannot be private
(III) they cannot be virtual

Options

a) I & III
b) I & II
c) II & III
d) All of the above

Ans. (a)

Explanation:
Virtual constructors don't make sense, it is meaningless to the C++ compiler to create an object. Constructors are automatically called by new operator.

Q3. Why do we need a constructor as a class member ?

Explanation:
Constructor is used to set the initial state of an object. It is executed automatically at the time of object creation. So if we want to initialize an object’s instance variable as soon as it is created into memory, we have to define a constructor for the class.

Q4. Explain instance variable. Give an example.

Explanation:
The attributes of an object are represented by variables known as instance variables.
E.g., consider an object account, the instance variables for account can be :
balance
accountType
clientName

Q5. Create a class with one integer instance variable.

Initialize the variable using :
(i) default constructor.
(ii) parameterized constructor.

Explanation:
class example
{
int x;
example() / default constructor
{
x = 2;
}
example(int x1) / parameterized constructor
{
x = x1;
}
}

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ICSE Class 10 Computer Applications Chapter wise Important Questions

Chapter No.	Chapter Name
Chapter 1	Revision of Class IX Syllabus
Chapter 2	Class as a Basis of all Computation
Chapter 3	User - defined Methods
Chapter 4	Constructors
Chapter 5	Library classes
Chapter 6	Encapsulation
Chapter 7	Arrays
Chapter 8	String handling

Conclusion

The concept of constructors within programming forms an indispensable part of object-oriented programming. Constructors serve as special methods that initialize objects upon their creation. Mastering this chapter empowers students to create and manipulate objects efficiently, ensuring proper initialization and setup of variables and attributes. If you are looking to further practice and enhance your understanding of the concepts discussed in the chapter, oswal.io provides a comprehensive set of class 10 Constructors important questions and answers for understanding the concept in a better way.

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Chapter Wise Important Questions for ICSE Board Class 10 Computer Applications
Revision of Class IX Syllabus
Class as a Basis of all Computation
User - defined Methods
Constructors
Library classes
Encapsulation
Arrays
String handling

Class 10 Computer Applications Chapter 4
Constructors
Important Questions

Introduction

What are Constructors?

Class 10 Constructors Important Questions and Answers

Q1. Default constructor requires how many parameters?

Options

(a) 3
(b) 0
(c) 2
(d) 1

Q2. Among the following Statements, Which are true about Constructors?

(I) a new operator automatically calls them.
(II) they cannot be private
(III) they cannot be virtual

Options

a) I & III
b) I & II
c) II & III
d) All of the above

Q3. Why do we need a constructor as a class member ?

Q4. Explain instance variable. Give an example.

Q5. Create a class with one integer instance variable.

Initialize the variable using :
(i) default constructor.
(ii) parameterized constructor.

ICSE Class 10 Computer Applications Chapter wise Important Questions

Conclusion

Frequently Asked Questions

Q1. What is a constructor in programming?

Q2. Can a class have multiple constructors?

Q3. What is the difference between a default constructor and a parameterized constructor?

Q4. Can constructors return a value?

Q5. What happens if a constructor is not defined in a class?

Class 10 Computer Applications Chapter 4 Constructors Important Questions

Introduction

What are Constructors?

Class 10 Constructors Important Questions and Answers

Q1. Default constructor requires how many parameters?

Options

(a) 3 (b) 0 (c) 2 (d) 1

Q2. Among the following Statements, Which are true about Constructors?

(I) a new operator automatically calls them.(II) they cannot be private(III) they cannot be virtual

Options

a) I & IIIb) I & IIc) II & IIId) All of the above

Q3. Why do we need a constructor as a class member ?

Q4. Explain instance variable. Give an example.

Q5. Create a class with one integer instance variable.

Initialize the variable using :(i) default constructor.(ii) parameterized constructor.

ICSE Class 10 Computer Applications Chapter wise Important Questions

Conclusion

Frequently Asked Questions

Q1. What is a constructor in programming?

Q2. Can a class have multiple constructors?

Q3. What is the difference between a default constructor and a parameterized constructor?

Q4. Can constructors return a value?

Q5. What happens if a constructor is not defined in a class?

Class 10 Computer Applications Chapter 4
Constructors
Important Questions

(a) 3
(b) 0
(c) 2
(d) 1

(I) a new operator automatically calls them.
(II) they cannot be private
(III) they cannot be virtual

a) I & III
b) I & II
c) II & III
d) All of the above

Initialize the variable using :
(i) default constructor.
(ii) parameterized constructor.