Class and Object Basics

Questions and Answers

Which of the following statements about classes and objects is correct?

Objects are used to define the attributes and behaviors of classes

Classes are used to define the attributes and behaviors of objects (correct)

Classes and objects are the same thing

Classes and objects are not related

What is the purpose of a constructor in a class?

To define the attributes and behaviors of a class

To initialize an object's data when the object is created (correct)

To call a member function of an object

To implement function overriding

What is the difference between member functions and data members in a class?

Member functions define the behaviors of a class, while data members define the attributes (correct)

Member functions and data members are not related

Member functions define the attributes of a class, while data members define the behaviors

Member functions and data members are the same thing

Which of the following is a way to implement function overriding?

Defining member functions in a class Signup and view all the answers

Which of the following is NOT a topic covered in this chapter?

How to use a destructor to destroy an object Signup and view all the answers

Which of the following is used to initialize an object's data when it is created?

Constructors Signup and view all the answers

Study Notes

Classes and Objects

A class is a blueprint or template, while an object is an instance of a class.

Constructors

A constructor is a special member function of a class that is used to initialize objects when they are created.
The purpose of a constructor is to set the initial state of an object by assigning values to its data members.

Member Functions and Data Members

Data members (also known as data attributes or properties) are the variables that are used to store data in a class.
Member functions (also known as methods) are the functions that belong to a class and are used to perform actions on the class's data members.

Function Overriding

Function overriding is a way to achieve runtime polymorphism in object-oriented programming.
One way to implement function overriding is by providing a different implementation of a function in a subclass that is already defined in its superclass.

Initialization of Objects

A constructor is used to initialize an object's data when it is created.
Initializers are not used to initialize an object's data (this is the incorrect option).

Topics Covered in the Chapter

The chapter covers topics related to classes and objects, constructors, member functions, data members, and function overriding.

Description

Test your knowledge on classes, objects, member functions, and data members in this quiz. Learn how to define member functions and declare data members in a class, as well as how to call member functions and use constructors to ensure data integrity.