Friend Class Example in C++

A My class has been defined with three data members - a (private), b (protected), and c (public). A Your class has been declared with a public member function fun. In the fun member function of the Your class, an object of the My class is created, and its private, protected, and public members are accessed.

This is possible because the Your class has been declared as a friend of the My class using the friend keyword. When the program is executed, it creates an object of the Your class and calls its fun member function. The fun function creates an object of the My class, sets its data members, and prints them to the console.

Source Code

#include <iostream>
//Friend Class
using namespace std;
class Your;
class My
{
private :
    int a;
protected :
    int b;
public:
    int c;
    friend Your;
};
class Your
{
public:
    void fun()
    {
        My t;
        t.a=10;
        t.b=20;
        t.c=30;
        cout<< "A : "<<t.a<<endl;
        cout<< "B : "<<t.b<<endl;
        cout<< "C : "<<t.c<<endl;
    }
};
int main()
{
    Your o;
    o.fun();
    return 0;
}

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Output

A : 10
B : 20
C : 30

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