Pls -00371 error (problem in multiple declaration )

Question

function code:
//start
create or replace function salinc(si number default 10) return number
is
number sinc;
number bef;
number aft;
begin
select sum(sal) into bef from emp where deptno=si;
update employees set sal=sal+200 where deptno=si;
select sum(sal) into aft from emp where deptno=si;
sinc:=aft-bef;
return sinc;
end salinc;
//end
is giving me these 2 errors:
0/0      PL/SQL: Compilation unit analysis terminated
1/46      PLS-00371: at most one declaration for 'NUMBER' is permitted in t he declaration section
how can i now declare the variables ?? need help

Answer 1

tushar88 wrote:
function code:
//start
create or replace function salinc(si number default 10) return number
is
number sinc;
number bef;
number aft;
beginIn oracle declaration is done as
<variable name> <data type>
i.e. your decleration is incorrect. it must be
sinc number;
bef number;
aft number;