Farm Sugar Cane

    function fuelItUp()
    --Finds out if the turtle needs to refuel and if it has fuel to run
        needsFuel = turtle.getFuelLevel()
        minimumFuelLevel = 10
        hasFuel = turtle.getItemCount(16)
        useFuel = turtle.refuel()
        if needsFuel == "unlimited" then

        else
            if tonumber(needsFuel) < tonumber(minimumFuelLevel) then
                if hasFuel > 0 then
                    turtle.select(16)
                    turtle.refuel(1)
                    turtle.select(1)
                else
                    print("Please insert fuel into slot 16")
                    repeat os.sleep(1)
                    until tonumber(turtle.getItemCount(16)) > 0
                    fuelItUp()
                end
            end
        end
    end

    function questions()
        length = 11
        rows = 8
        declarations()
    end

    function declarations()
        currentPos = 0
        currentRow = 1
        startBlock = 1
        startRow = 1
        det = turtle.detect()
        detDown = turtle.detectDown()
        prime()
    end

    function prime()
        fuelItUp()
        turtle.up()
        turtle.up()
        farmDown()
    end

    function farmDown()
        while tonumber(currentPos) ~= tonumber(length) do
            fuelItUp()
            if det == true then
                turtle.dig()
                turtle.forward()
                currentPos = currentPos + 1
                if detDown == true then
                    turtle.digDown()
                end
            else
                if detDown == true then
                    turtle.digDown()
                end
            end
        end
        if tonumber(currentRow) ~= tonumber(rows) then
            if tonumber(currentRow) % 2 == 0 then
                rightTurn()
            else
                leftTurn()
            end
        else
            ending()
        end
    end

    function leftTurn()
        turtle.turnLeft()
        turtle.forward()
        if det == true then
            turtle.dig()
            turtle.forward()
        end
        turtle.turnLeft()
        if detDown == true then
            turtle.digDown()
        end
        currentRow = currentRow + 1
        farmBack()
    end

    function rightTurn()
        turtle.turnRight()
        turtle.forward()
        if det == true then
            turtle.dig()
            turtle.forward()
        end
        turtle.turnRight()
        if detDown == true then
            turtle.digDown()
        end
        currentRow = currentRow + 1
        farmDown()
    end

    function farmBack()
        while tonumber(currentPos) ~= tonumber(startBlock) do
            fuelItUp()
            if det == true then
                turtle.dig()
                turtle.forward()
                currentPos = currentPos - 1
                if detDown == true then
                    turtle.digDown()
                end
            else
                if detDown == true then
                    turtle.digDown()
                end
            end
        end
        if tonumber(currentRow) ~= tonumber(rows) then
            if tonumber(currentRow) % 2 == 0 then
                rightTurn()
            else
                leftTurn()
            end
        else
            ending()
        end
    end


    function ending()
        if tonumber(currentRow) % 2 == 0 then
            turtle.forward()
            turtle.turnLeft()
            turtle.down()
            turtle.down()
        else
            turtle.turnLeft()
            turtle.turnLeft()
            while tonumber(currentPos) ~= tonumber(startBlock - 1) do
                turtle.forward()
                currentPos = currentPos - 1
            end
            turtle.turnLeft()
            turtle.down()
            turtle.down()
        end
        while tonumber(currentRow) ~= tonumber(startRow) do
            fuelItUp()
            turtle.forward()
            turtle.forward()
            currentRow = currentRow - 1
        end
        dropoff()
    end

    function dropoff()
        s = 1
        total = 0
        while s < 16 do
            items = turtle.getItemCount(s)
            total = items + total
            if items > 0 then
                turtle.select(s)
                turtle.drop()
            end
            s = s + 1
        end
        turtle.turnLeft()
        print("Total Items Deposited:")
        print(total)
    end

questions()