How to use OUT variables in my stored procedure

I'm wondering if I can get some help using OUT variables in my stored procedure. Here's my code...
CREATE OR REPLACE PROCEDURE testProj.testProcedure (
     v_segment_id IN VARCHAR2,
     v_student_id OUT VARCHAR2,
     v_current_code OUT NUMBER,
     v_new_code OUT NUMBER
) AS
BEGIN
     SELECT
          s.student_id,
          s.quad_code_id,
          nc.quad_code_id
     INTO
          v_student_id,
          v_current_quad_code,
          v_new_quad_code
     FROM testProj.students s
     INNER JOIN testProj.new_codes nc ON s.student_id = nc.student_id
     WHERE s.segment_id = v_segment_id ;
END testProcedure ;
EXECUTE testProj.testProcedure ('44') ;
When I execute that stored procedure with the above execute statement, I get this error:
Error report:
ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'testProcedure'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
+06550. 00000 - "line %s, column %s:\n%s"+
*Cause:    Usually a PL/SQL compilation error.+
*Action:+

Using Refcursor is one way you can do that ->
satyaki>
satyaki>select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Prod
PL/SQL Release 10.2.0.3.0 - Production
CORE    10.2.0.3.0      Production
TNS for 32-bit Windows: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
Elapsed: 00:00:00.21
satyaki>
satyaki>
satyaki>create or replace procedure r_arg(
2                                      choice in number,
3                                      b in out sys_refcursor
4                                   )
5 is
6    str   varchar2(500);
7 begin
8     str := 'select * from emp';
9     open b for str;
10 exception
11    when others then
12      dbms_output.put_line(sqlerrm);
13 end;
14 /
Procedure created.
Elapsed: 00:00:01.84
satyaki>
satyaki>
satyaki>declare
2    rec_x emp%rowtype;
3    w sys_refcursor;
4 begin
5    dbms_output.enable(1000000);
6    r_arg(1,w);
7    loop
8      fetch w into rec_x;
9        exit when w%notfound;
10        dbms_output.put_line('Employee No: '||rec_x.empno||' - '||
11                             'Name: '||rec_x.ename||' - '||
12                             'Job: '||rec_x.job||' - '||
13                             'Manager: '||rec_x.mgr||' - '||
14                             'Joining Date: '||rec_x.hiredate||' - '||
15                             'Salary: '||rec_x.sal||' - '||
16                             'Commission: '||rec_x.comm||' - '||
17                             'Department No: '||rec_x.deptno);
18     end loop;
19     close w;
20 exception
21    when others then
22       dbms_output.put_line(sqlerrm);
23 end;
24 /
Employee No: 9999 - Name: SATYAKI - Job: SLS - Manager: 7698 - Joining Date: 02-NOV-08 - Salary: 55000 - Commission: 3455 - Department No: 10
Employee No: 7777 - Name: SOURAV - Job: SLS - Manager: - Joining Date: 14-SEP-08 - Salary: 45000 - Commission: 3400 - Department No: 10
Employee No: 7521 - Name: WARD - Job: SALESMAN - Manager: 7698 - Joining Date: 22-FEB-81 - Salary: 1250 - Commission: 500 - Department No: 30
Employee No: 7566 - Name: JONES - Job: MANAGER - Manager: 7839 - Joining Date: 02-APR-81 - Salary: 2975 - Commission: - Department No: 20
Employee No: 7654 - Name: MARTIN - Job: SALESMAN - Manager: 7698 - Joining Date: 28-SEP-81 - Salary: 1250 - Commission: 1400 - Department No: 30
Employee No: 7698 - Name: BLAKE - Job: MANAGER - Manager: 7839 - Joining Date: 01-MAY-81 - Salary: 2850 - Commission: - Department No: 30
Employee No: 7782 - Name: CLARK - Job: MANAGER - Manager: 7839 - Joining Date: 09-JUN-81 - Salary: 4450 - Commission: - Department No: 10
Employee No: 7788 - Name: SCOTT - Job: ANALYST - Manager: 7566 - Joining Date: 19-APR-87 - Salary: 3000 - Commission: - Department No: 20
Employee No: 7839 - Name: KING - Job: PRESIDENT - Manager: - Joining Date: 17-NOV-81 - Salary: 7000 - Commission: - Department No: 10
Employee No: 7844 - Name: TURNER - Job: SALESMAN - Manager: 7698 - Joining Date: 08-SEP-81 - Salary: 1500 - Commission: 0 - Department No: 30
Employee No: 7876 - Name: ADAMS - Job: CLERK - Manager: 7788 - Joining Date: 23-MAY-87 - Salary: 1100 - Commission: - Department No: 20
Employee No: 7900 - Name: JAMES - Job: CLERK - Manager: 7698 - Joining Date: 03-DEC-81 - Salary: 950 - Commission: - Department No: 30
Employee No: 7902 - Name: FORD - Job: ANALYST - Manager: 7566 - Joining Date: 03-DEC-81 - Salary: 3000 - Commission: - Department No: 20
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.48
satyaki>
satyaki>Regards.
Satyaki De.

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If you want all the rows from goh, then you don't want any conditions like goh.OFFER_NO <> 0.
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