first house

function line(dlina)
    for x = 1 , dlina do
        if turtle.getItemCount = 0 do
            turtle.select(2)
        end
        turtle.placeDown()
        turtle.forward()
    end
end
function square(dlina)
    for b = 1, 4 do
        line(dlina)
        turtle.turnRight()
    end
end
function cube(length,height)
    for s = 1 , height do
        square(length)
        turtle.up()

    end
end
cube(7,3)