function forward(number)
	for i=1, number do
		if turtle.detect() then
		turtle.dig()
		end
		turtle.forward()
		if turtle.detectUp() then
		turtle.digUp()
		end
		if turtle.detectDown() then
		turtle.digDown()
		end
	end
end

function MoveDown(local numberTiles)
	for i=1, numberTiles do
		if turtle.detectDown() then
		turtle.digDown()
		end
		turtle.down()
	end
end

write("How wide is the room?")
local width = tonumber(read())
local halfwidth = width/2
write("How long is the room?")
local length = tonumber(read())
turtle.turnLeft()
forward(halfwidth)
turtle.turnRight()
for i=1, halfwidth do
	forward(length)
	turtle.turnRight()
	if turtle.detect() then
	turtle.dig()
	forward(1)
	turtle.turnRight()
	forward(length)
	turtle.turnLeft()
	forward(1)
	turtle.turnLeft()
end