Contatore del gas

--contatore del gas v1 (c) lego11
term.clear()
term.setCursorPos(1,1)

local metricubi = 0
function refresh()
term.setCursorPos(1,3)
end

print("Compagnia Generale Contatori S.A. (New Radeon)")
print("")

rhandle = assert(fs.open("metricubi", "r"), "ERRORE: file metri cubi non presente")
rawmc = rhandle.readAll()
metricubi = tonumber(rawmc)
rhandle.close()


while true do
os.pullEvent("redstone")
if redstone.getInput("back") == true then
metricubi = metricubi + 1
refresh()
print(metricubi.." m³")
whandle = assert(fs.open("metricubi", "w"), "TOC ERROR")
whandle.write(tostring(metricubi))
whandle.close()
end
end