plsql code for calculation of net salary

declare

        ename varchar2(15);

        basic number;

        da number;

        hra number;

        pf number;

        netsalary number;

begin

        ename:=&ename;

        basic:=&basic;

        da:=basic * (41/100);

        hra:=basic * (15/100);

        if (basic < 3000)then

             pf:=basic * (5/100);

        elsif (basic >= 3000 and basic <= 5000) then

             pf:=basic * (7/100);

        elsif (basic >= 5000 and basic <= 8000) then

             pf:=basic * (8/100);

        else

             pf:=basic * (10/100);

        end if;

        netsalary:=basic + da + hra -pf;

        dbms_output.put_line('Employee name : ' || ename);

        dbms_output.put_line('Providend Fund : ' || pf);

        dbms_output.put_line('Net salary : ' || netsalary);

end;