if语句后批处理如何使用括号？

Question

我正在尝试用批量创建一个简单的数字猜谜游戏。但是，我从来没有能够正确使用括号。代码是：

@echo off
::This is a game that has you guess a random number.
Title Random Number Game
set number=%random%
:guess
set /p guess1= Guess the number I'm thinking of!
if %guess1%LSS%number% (
echo Higher!
goto guess
)
if %guess1%GTR%number% (
echo Lower!
goto guess
)
echo You got it! Awesome Job!

无论我的猜测是高于还是低于数字，在输入之后，cmd都会返回，“（此时并未预料到。”我如何解决这个问题？

Answer 1

你几乎把一切都搞定了。你只需要在比较运算符周围有一个空格

if %guess1% LSS %number% (
  echo Higher!
  goto guess
)
if %guess1% GTR %number% (
  echo Lower!
  goto guess
)