Wap to check whether the given number is perfect square or not

Wap to check whether the given number is perfect square or not

DECLARE FUNCTION PERFECT (S)
CLS
INPUT "ENTER ANY NUMBER"; N
S = SQR(N)
PR = PERFECT (S)
IF PR = S THEN
PRINT "PERFECT SQUARE"
ELSE
PRINT "NOT PERFECT SQUARE"
END IF
END

FUNCTION PERFECT (S)
PERFECT = INT (S)
END FUNCTION