break3

function cycle ()
  while true do
    turtle.place()
    turtle.dig()
  end
end

function stahp ()
  while true do
    evt,button=os.pullEvent()
    if evt=="key" then
      print("Key pressed: "..button)
      break
    end
  end
end

term.clear()
term.setCursorPos(1,1)
print("Breaking Blocks")
print("Press any key to terminate...")
parallel.waitForAny(cycle,stahp)