auto lights

mon = peripheral.wrap( "left" )
readout = "Monitoring"
readout2 = "Monitoring"

function clear()
    term.clear()
    term.setCursorPos(1,1)
end

function rnd()  --reset and display
    mon.clear()
    mon.setCursorPos(1,1)
    clear()
    sunrise = os.setAlarm(6.00)
    sunset = os.setAlarm(18.00)
    print("Press Q to exit.")
    print(readout2)
    mon.write(readout)
end

rnd()

while true do
    event, input = os.pullEvent()
    if (event=="alarm") and (input==sunrise) then
        redstone.setOutput("back", false)
        readout = "Good Morning."
        readout2 = "lights out."
        rnd()
        sleep(1)
    elseif (event=="alarm") and (input==sunset) then
        redstone.setOutput("back", true)
        readout = "Good Night."
        readout2 = "lights on."
        rnd()
        sleep(1)
    elseif (event=="key") and (input==16) then -- elseif (event=="char") and ((input=="q") or (input=="Q")) then -- possible change change
        readout2 = "Shutting Down."
        readout = "System standby."
        rnd()
        sleep(1)
        break
    end
end

clear()