set serveroutput on
 
declare
  s varchar2(100);
begin
  dbms_output.put_line(to_char(pstudenti.NrStudSectia(2)));
  dbms_output.put_line(to_char(pstudenti.NrStudMedia(2,7,9)));
  dbms_output.put_line(pstudenti.StructStud);
  pstudenti.NrStud(2,s);
  dbms_output.put_line(s);
end;