Client Tools :: REF CURSOR To Print Output From Given Input?

create table a_user
(
u_name varchar2(30)
, grp varchar2(30)
)
;
INSERT INTO a_user VALUES ('abc', 'new');

[code].....

sql:

SELECT
a.grp
, a.g_tot
FROM a_user b
,
(
SELECT

[code].....

getgrpname is a function to get grp when I input the u_name

Now I want to create a proc to display the output from the sql when I give the p_u_name as input. I am thinking some thing like this:

create or replace procedure get_u_name_data (p_u_name IN VARCHAR2, rc_data OUT SYS_REFCURSOR) IS
IS
BEGIN
OPEN rc_data FOR
SELECT
a.grp

[code].....

how to print output in SQL developer