Tag: Friend Class

A Friend function is a function defined outside the class, but it has access to all private and protected members of the class. To declare a friend function, it’s prototype must be declared inside the class, preceding it with keyword “friend”. For eg:

class Demo
{
    private:
        int m;
        int y;

    public:
        friend int sum (Demo d);
        void print_val ();
        Demo (int m, int y);
};