SQL>
SQL> SET SERVEROUTPUT ON
SQL> DECLARE
2 x NUMBER;
3 BEGIN
4 DBMS_OUTPUT.PUT_LINE(-242.24);
5 x := 5;
6 DBMS_OUTPUT.PUT_LINE(-x);
7 x := -5;
8 DBMS_OUTPUT.PUT_LINE(-x);
9 DBMS_OUTPUT.PUT_LINE(+10);
10 DBMS_OUTPUT.PUT_LINE(+x);
11 END;
12 /
-242.24
-5
5
10
-5
PL/SQL procedure successfully completed.
SQL>