set serveroutput on
 
declare
  s student;
begin
  dbms_output.enable;
  s:=student('a','b','1231205890123','Inf','241',8.66);
  dbms_output.put_line(to_char(s.afisare()));
  dbms_output.put_line('Tip bursa: ' || s.tipbursa(9,7));
end;