...
begin
  for r in (select first_name || ' ' || last_name name
              from student
             where s_id = curr_s_id) loop
    dbms_output.put_line('Schedule for ' || r.name);
  end loop;

  for r in course_cursor loop
    dbms_output.put_line(r.call_id || ' ' || ...);
  end loop;
end;

-- create procedure:
CREATE OR REPLACE PROCEDURE display_schedule
  (curr_s_id    IN enrollment.s_id%TYPE,
   curr_term_id IN course_section.term_Id%type) 
AS
BEGIN
  FOR r IN
    (SELECT call_id, day, time, bldg_code, room, s_last, s_first
     FROM   course, course_section, enrollment, location -- , student
     WHERE  course.course_id       = course_section.course_id
     AND    course_section.loc_id  = location.loc_id
     AND    enrollment.c_sec_id    = course_section.c_sec_id
     AND    enrollment.s_id        = curr_s_id
     AND    course_section.term_id = curr_term_id)
  LOOP
    DBMS_OUTPUT.PUT_LINE ('Schedule for ' || r.s_first || ' ' || r.s_last);
    DBMS_OUTPUT.PUT_LINE ('***********************************************************');
    DBMS_OUTPUT.PUT_LINE (r.call_id 
                          || ' ' || r.day 
                          || ' ' || r.time 
                          || ' ' || r.bldg_code
                          || ' ' || r.room);
  END LOOP;
END display_schedule;
/
SHOW ERRORS

-- execute procedure:
SET SERVEROUTPUT ON
EXECUTE display_schedule (104, 6)