Lua "if then" 语句出错（预期 'end'（在第 28 行关闭 'if'））

Question

我收到一个错误

bios:14: [string "Lighting"]:58: 'end' expected (to close 'if' at line 28)

老实说，我不知道自己在做什么，因为我是 Lua 的新手，而且一般来说是编码。我认为这与某处没有 end 有关。

term.clear()
term.setCursorPos(17, 4)
print("Welcome")
sleep(2)
term.setCursorPos(8, 5)
print("What lights would you like to control?")
input = read()
if input == "Hall" then
  term.clear()
  term.setCursorPos(17,4)
  print("On or Off?")
  input = read()
  if input == "on" then
    redstone.setOutput("back", true)
    print("Hall Lighting Turned On")
    sleep(5)
    shell.run("Lighting")
  else
    redstone.setOutput("back", false)
    print("Hall Lighing Turned Off")
    sleep(5)
    shell.run("Lighting")
  if input == "Bedroom" then
  term.clear()
  term.setCursorPos(17,4)
  print("On or Off")
  input = read()
  if input == "on" then
    redstone.setOutput("left", true)
    print("Bedroom Lighting Turned On")
    sleep(5)
    shell.run("Lighting")
  else
    redstone.setOutput("left", false)
    print("Bedroom Lighing Turned Off")
    sleep(5)
    shell.run("Lighting")
  if input == "Labs" then
  term.clear()
  term.setCursorPos(17,4)
  print("On or Off?")
  input = read()
  if input == "on" then
    redstone.setOutput("right", true)
    print("Lab Lighting Turned On")
    sleep(5)
    shell.run("Lighting")
  else
    redstone.setOutput("right", false)
    print("Lab Lighing Turned Off")
    sleep(5)
    shell.run("Lighting")
  end
else
  print("Error")
  sleep(3)
  shell.run("Lighting")
end

Answer 1

您好几个地方好像漏了 end 个字。

结构应该是这样的：

if ... then
  some code
else
  some optional code
end

此外，尝试更好地缩进代码。届时你应该清楚应该把 end 个单词放在哪里。

你想要的大概是：

term.clear()
...
input = read()

if input == "Hall" then
  ...
  if input == "on" then
    ...
  else
    redstone.setOutput("back", false)

    shell.run("Lighting")
  end -- missing end!
end -- missing end!

if input == "Bedroom" then
    ...
  if input == "on" then
    ...
  else
    redstone.setOutput("left", false)
    ...
    shell.run("Lighting")
  end -- missing end!
end -- missing end!

...

Lua "if then" 语句出错（预期 'end'（在第 28 行关闭 'if'））

Error with Lua "if then" statements ('end' expected (to close 'if' at line 28))

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