local args = {...}
W = args[1]
L = args[2]
H = args[3]
function getChar()
  local event, ch = os.pullEvent("char")
  term.write(ch)
  print("*****")
  return ch
end

function getLine()
  term.write("[")
    for i = 1, W do
--    print(line[i])
      print(i)
     line[i] = getChar()
    end
  print("]")
  return line
end

function getLayer()
  local layer = ""
  for i = 1, W+2 do
    term.write("_")
  end
  print("")
  for i = 1, L do
    layer[i] = getLine()
  end
  for i = 1, W+2 do
    term.write("-")
  end
  print("")
  return layer
end

function getPlan()
  local plan = ""
  term.clear()
  term.setCursorPos(1,1)
  print("   --Please type up building plan.--")
  for i = 1, H do
    plan[i] = getLayer()
  end
  print("")
  print("          ----Plan done----")
  return plan
end

getPlan()