What Is a Class in Data Structure?

A class is an essential concept in data structure. It is a user-defined data type that groups together related data and functions. In other words, a class can be thought of as a blueprint or template for creating objects.

Defining a Class

To define a class in HTML, you can use the <class> tag. For example:

<class>
   <b>class</b> ClassName
   {
      // member variables
      // member functions
   }
</class>

The name of the class should be meaningful and represent the purpose of the data structure it defines.

Class Members

A class consists of two types of members: member variables (also known as attributes or properties) and member functions (also known as methods).

Member Variables

Member variables are used to store data within the class. They represent the state or characteristics of an object created from the class. Each object has its own set of member variables.

To define a member variable, you can use the <li> tag inside an unordered list (<ul>). For example:

<ul>
   <li>int age;
   <li>string name;
</ul>

Member Functions

Member functions are used to perform operations on the data stored within an object. They define the behavior or actions that objects created from the class can perform.

To define a member function, you can use the <li> tag inside an unordered list (<ul>). For example:

<ul>
   <li>void setName(string newName);
   <li>int getAge();
</ul>

Creating Objects from a Class

To create objects from a class, you can use the <p> tag. For example:

<p>NewClass objectName;

You can create multiple objects from the same class, each with its own set of member variables.

Using Class Members

To access and modify the member variables and call member functions of an object, you can use dot notation. For example:

<p>objectName.age = 25;

<p>// accessing and modifying a member variable</i>

<p>// calling a member function</i>