Minecolumn

--This program will make a turtle
--dig down to preset number, and
--then mine again for X times

X = 0 --Shafts to dig
H = 0 --height
S = false --direction the turtle will move next

print("How many shafts would you like to dig?")
X = tonumber(read())
print("What is the height(Z) of the turtle?")
H = tonumber(read())

for k,X do
	for i,H do
		for j,4 do
			turtle.dig()
			turtle.turnRight()
		end
		turtle.digDown()
		turtle.down()
	end
	for l,H do
		turtle.up()
	end
	turtle.forward()
	turtle.forward()
	if S = false then
		turtle.turnRight()
		turtle.forward()
		turtle.turnLeft()
		S = true
	else
		turtle.turnLeft()
		turtle.forward()
		turtle.turnRight()
		S = false
	end
end