Wap to calculate distance travelled by body

DECLARE FUNCTION DIS(U,T,A)
CLS
INPUT"ENTER VELOCITY";U
INPUT"ENTER TIME";T
INPUT"ENTER ACCELERATION";A
PRINT"DISTANCE TRAVELLED BY BODY IS ";DIS(U,T,A)
END

FUNCTION DIS(U,T,A)
DIS=U*T+1/2*A*T^2
END FUNCTION