Running a function inside a package

Question

This is kind of a noob question: I have a function. I want to use this function inside a package. The function is not created inside the package.

Answer 1

Here is an example;
  1  create or replace function test_func(v_one number, v_two number)
  2  return number
  3  as
  4  begin
  5  return v_one + v_two;
  6* end;
SQL> /
Function created.
SQL> select test_funct(10,20) from dual
  2  /
select test_funct(10,20) from dual
ERROR at line 1:
ORA-00904: "TEST_FUNCT": invalid identifier
SQL> select test_func(10,20) from dual
  2  /
TEST_FUNC(10,20)
              30
SQL> create or replace package test_pkg as
  2  procedure test_proc(v_name varchar2, v_one number, v_two number);
  3  end test_pkg;
  4  /
Package created.
SQL>
  1  create or replace package body test_pkg as
  2  procedure test_proc(v_name varchar2, v_one number, v_two number) is
  3  begin
  4     dbms_output.put_line(v_name || ' ' || test_func(v_one, v_two));
  5  end;
  6* end test_pkg;
SQL> /
Package body created.
SQL> set serveroutput on
SQL> exec test_pkg.test_proc('Krystian',10,20)
Krystian 30
PL/SQL procedure successfully completed.With kind regards
Krystian Zieja