[其他] 批处理怎样用choice来选择？

@echo off&setlocal enabledelayedexpansion
set "str=0 1 2 3 4 5 6 7 8 9 a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z"
for %%a in (%str%) do set /a n+=1&set ".!n!=%%a"
:lp
for /l %%a in (1,1,9) do (
    cls&set /p=请输入八位由数字和字母组成的密码，请注意大小写：<nul
    if defined pwds set /p=!pwds!<nul
    if %%a neq 9 (
       choice /n /cs /c %str: =%
       set "pwds=!pwds!*"&call,set "pwd=!pwd!%%.!errorlevel!%%"
    )
)
echo,&echo,&echo %pwd%
if "%pwd%" equ "BatHomes" (
   echo 密码正确
  ) else (
   echo 密码错误
)
pause>nul
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@echo off
:aa
cls
echo                 please input good or bad
choice /c gb /m input:
if errorlevel 1 goto bb
if errorlevel 2 goto cc
:bb
echo good 
echo.
pause 
  goto aa
:cc
echo bad 
echo.
pause
  goto aa
pause
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