usage of rowtype in parameter list for stored proc

How can do I run the following stored procedure in SQL/PLUS? I need to define a variable for OUT_customer_information_rec, include it in the parameter list and then print it. (I can't find the answer in Feuerstein's book :) )

Code:

---

create or replace procedure get_customer_info
 ( IN_customer_nbr              IN NUMBER,
  OUT_customer_information_rec OUT customer_information%rowtype)
IS
BEGIN
SELECT  *
  INTO OUT_customer_information_rec
  FROM customer_information 
 WHERE customer_nbr = IN_customer_nbr;
END;

---

This does NOT work:

Code:

---

variable  c1  customer_inforamtion.rowtype;
exec  get_customer_info (123, :c1);
print c1;

---

Do it as part of a PL/SQL block then output the results using DBMS_OUPUT:

SET SERVEROUTPUT ON
DECLARE
v_c1 customer_inforamtion%rowtype
BEGIN
get_customer_info (123, v_c1);

-- Output the data
DBMS_OUTPUT.PUT_LINE('v_c1.col1: ' || v_c1.col1);
DBMS_OUTPUT.PUT_LINE('v_c1.col2: ' || v_c1.col2);
-- etc.
END;
/

Obviously, modify the column names and the numbers of columns accordingly.

Cheers