This is C$++$ Programming Declare and define the classes that work as the notes below. #include F$//$ All data members of Base and Derived classes must be declared L$//$ as private access types Base$*$ p$1=$ new Derived$(10,20)$ ; $//($x$,$ y$)$ Base$*$ p$2=$ new Base$(5)$ ; $//($x$)$ pl $->$ print $()\_$i p$1->$Base::print$()$; $//$ prints $10$ p$2->$ print$()$; $/1$ prints $5$ Derived$*$ p$^3=$ dynamic$\_$cast