banka

function showacc()
 cteniD()
 cteniF()
 print("David: " .. ucetD)
 print("Filip: " .. ucetF)
 print("---------------")
 print(" ")
end

function zapisD()
 local fileD = fs.open("ucetDf", "w")
 fileD.writeLine(ucetD)
 fileD.close()
end

function zapisF()
 local fileF = fs.open("ucetFf", "w")
 fileF.writeLine(ucetF)
 fileF.close()
end

function cteniD()
 local fileD = fs.open("ucetDf", "r")
 ucetDs = fileD.readLine()
 ucetD = tonumber(ucetDs)
 if ucetD == nil then
  ucetD = 0
 end
 fileD.close()
end

function cteniF()
 local fileF = fs.open("ucetFf", "r")
 ucetFs = fileF.readLine()
 ucetF = tonumber(ucetFs)
 if ucetF == nil then
  ucetF = 0
 end
 fileF.close()
end



--zacatek
if fs.exists("ucetDf") then

showacc()
rednet.open("top")
while true do
 local id, msgwho, protocol = rednet.receive("kdo")
 local id, msghowmuch, protocol = rednet.receive("kolik")
 vydelek = tonumber(msghowmuch)

  if msgwho == "David"
  then
  cteniD()
  showacc()
  ucetD = ucetD + vydelek
  zapisD()
  end

  if msgwho == "Filip"
  then
  cteniF()
  ucetF = ucetF + vydelek
  zapisF()
  end

  showacc()

  end

else
 local ucetD = 0
 local ucetF = 0
 zapisD()
 zapisF()

end
os.reboot()