QBASIC PROGRAM TO FIND AREA OF 4 WALLS. SUB


DECLARE FUNCTION AREA(L,B,H)
CLS 
INPUT "ENTER LENGTH";L
INPUT "ENETR BREADTH";B
INPUT "ENTER HEIGHT";H
PRINT"AREA OF 4 WALLS="AREA(L,B,H)
END

FUNCTION AREA(L,B,H)
AREA=2*H*(L+B)
END FUNCTION