piece

print("longueur : ")
print("largeur : ")
print("hauteur : ")
local longueur = io.read()
local largeur = io.read()
local hauteur = io.read()
l = 5

for k = 1, hauteur, 1 do

    for j = 1, largeur, 1 do

        for i = 1, longueur-1, 1 do
            turtle.digDown()
            turtle.forward()
            if turtle.detectDown() then
            turtle.digDown()
            else
            end
            turtle.digDown()
        end


    if (j < l and j % 2 == 0) then
        turtle.turnRight()
        turtle.forward()
        turtle.turnRight()
    elseif (j < l) then
        turtle.turnLeft()
        turtle.forward()
        turtle.turnLeft()
    end
    end
    turtle.down()
    turtle.turnRight()
    turtle.turnRight()
end