What is Class and Object in C++?

In the world of programming, the concepts of class and object play a important role in the development of software. These concepts are essential in object-oriented programming, which is a widely used paradigm in modern programming languages like C++.

To begin with, a class is a blueprint or template for creating objects in a program. It defines a set of properties (attributes) and behaviors (methods) that all objects of that class will have.

In other words, a class acts as a template from which objects can be created. For example, if we were creating a class for a car, we would define the properties of the car such as its make, model, year, and color, as well as the behaviors such as driving, braking, and turning.

Objects are an instance of a class. This is a concrete realization of the properties and behaviors that are defined in this class. Each object of the class will have its unique set of property values and can perform the behaviors defined in the class.

In C++, classes and objects are created using structures and functions. A structure in C++ can be used to define the properties of a class, and functions can be used to define the behaviors.

Example how a class and objects can be implemented in C++:

#include <iostream>

#include <string>

using namespace std;

class Demo_Class

{      

public:            

int num;       

string str; 

};

int main()

{

Demo_Class obj; 

obj.num = 108;

obj.str = "Hello Class...!!!";

cout << obj.num << "\n";

cout << obj.str;

return 0;

}

Class and Object are fundamental concepts in object-oriented programming, and they play a significant role in the development of software.

In C++, classes and objects can be implemented using structures and functions, allowing for the creation of reusable and modular code.

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