square(int a)
{
side = a;
}
friend int area(square sqObj);
};

class rect
{
int len, bre;
rect (int a, int b)
{
len = a;
bre = b;
}

friend int area1(rect recObj);
}

int area (square sqObj)
{
return(sqObj.side*sqObj.side);
}

int area1 (rect rectObj)
{
return(rectObj.len*rectObj.bre);
}

void main()
{
square sq(5);
rect rec(3,5);
cout << area(sq);
cout << area1(rec);

}

1. The friend function can access private and protected data members.
2. Friend function cannot call with the help of Object of that class, it is call by using normal ‘C’ function.
3. Generally, friend function can take Object as a argument.
4. Friend function is not in scope of class.

can a member function call this friend function? (if it does accept a class argument)