CC Turtle: Simple square v0.1

local tArgs = { ... }

if #tArgs < 1 then
    print("usage: name <size>")
    return
end

local size = tonumber( tArgs[1] )

-- Digs two sides from a square, forward and to the right
function digSides(size)
    -- Dig the first side ("left"), straight forward
    for i = 1, size do
        turtle.dig()
        turtle.forward()
    end

    turtle.turnRight()

    -- Dig the second side ("back") (to the right from the starting position)
    for i = 1, (size - 1) do
        turtle.dig()
        turtle.forward()
    end

    turtle.turnRight()
end


-- Dig the square, two sides at a time, reducing the size of the leftover square
for i = 0, (size - 1) do
    digSides(size - i)
end