write a pl/sql code for find sum of n numbers using while loop

DECLARE

    num NUMBER:='&Input_Number';

    res NUMBER:=0;

BEGIN

    WHILE(num>0)LOOP

        res:=res+num;

        num:=num-1;

    EXIT WHEN num=0;

    END LOOP;

    DBMS_OUTPUT.PUT_LINE(res||' Is Total !');

END;

/

Enter value for input_number: 5

 

15 Is Total !

 

PL/SQL procedure successfully completed.