test

local moveforward = function(str)
if str == "hallo" then
  if turtle.detect()==0 then
    print("stein")
    turtle.forward()


  elseif turtle.detect()==1 then
    print("kein stein")
    turtle.turnLeft()
    turtle.turnLeft()
    turtle.turnLeft()
    turtle.turnLeft()
  end
  end
    --return "0"
    --print("return")
end

while(true) do
  print("gogo")
  moveforward("hallo")
  print("los")
end