Stairs

local tArgs = { ... }
if #tArgs == 1 then
    height = tonumber(tArgs[1])
else
    print("Usage: stairs <current height>")
    return
end

function forward(num)
    for x = 1, num do
        while not turtle.forward() do
            turtle.dig()
        end
    end
end

function down(num)
    for x = 1, num do
        while not turtle.down() do
            turtle.digDown()
        end
    end
end

function up(num)
    for x = 1, num do
        while not turtle.up() do
            turtle.digUp()
        end
    end
end

for x = 1, height do
    forward(1)
    turtle.digUp()
    down(1)
    turtle.digDown()
end