C++ Program to Demonstrate Friend Function

#include <iostream>
using namespace std;

class Sample
{
    int x;
public:
    Sample()
    {
        x = 10;
    }
    friend void show(Sample s);
};

void show(Sample s)
{
    cout << "Value of x = " << s.x << endl;
}

int main()
{
    Sample obj;
    show(obj);
    return 0;
}
  

📘 Explanation:

This program demonstrates the concept of a friend function in C++. A friend function is not a member of the class, but it can access the private and protected data members of the class.

• The class Sample contains a private variable x.
• The constructor initializes x with the value 10.
• The function show() is declared as a friend inside the class.
• Because it is a friend, show() can access the private variable x.

Friend functions are mainly used when a function needs access to class data but does not logically belong to the class.

🧾 Sample Output:

Value of x = 10
  

🔑 Keywords:

C++ friend function, accessing private members, C++ OOP concepts, friend function example, C++ classes and objects

📌 Hashtags:

#CPlusPlus #FriendFunction #OOP #CPPBasics #Programming #1printf

🔍 Search Description:

Learn how friend functions work in C++ with a simple example that accesses private data members. Includes explanation, output, and dark-themed code.