positive,negative and neutral(sub)

DECLARE  SUB CHECK(N)
CLS
INPUT"ENTER ANY NUMBER";N
CALL CHECK(N)
END

SUB CHECK(N)
IF N>0 THEN
PRINT"THE GIVEN NO IS POSITIVE"
ELSEIF N<0 THEN
PRINT"THE GIVEN NO IS NEGATIVE"
ELSE
PRINT"THE GIVEN NO IS NEUTRAL"
END IF
END SUB