✅ Definition:

A class is a user-defined data type that works as a blueprint/template for creating objects.

Class = Data + Functions in one unit

🧠 Real Life Example:

Socho tum ek "Student" naam ka class bana rahe ho. Har student ke paas kuch common cheezein hoti hain:

• Name
• Roll number
• Age
• Function: displayDetails()

Yeh sab class ke andar define kiya jaata hai.

🔧 Class Syntax in C++:

class ClassName {
  public:
    // Data Members
    int x;

    // Member Functions
    void show() {
        cout << "x = " << x << endl;
    }
};

🧪 Example: Student Class

#include<iostream>
using namespace std;

class Student {
  public:
    string name;
    int roll;

    void display() {
        cout << "Name: " << name << ", Roll: " << roll << endl;
    }
};

int main() {
    Student s1;            // object of class Student
    s1.name = "Nikhil";
    s1.roll = 101;

    s1.display();          // Output: Name: Nikhil, Roll: 101

    return 0;
}

🔍 Key Components of a Class: