The print ( X* ) function defined below is not able to do its job because m and n are in the private section of the class X? How can this situation be fixed with a single additional declaration in the definition of class X? (You are not allowed to change the access control property for any of the members of X.)

class X { int m; int n; public: X( int mm, int nn ) { m = mm; n = nn; } }; void print( X* ptr ) { cout << ptr->m << " " << ptr->n << endl; }