
CODE: [Copy to clipboard]@echo off&set ci=3
for /f "tokens=1-3 delims=.-/ " %%a in ("%date%") do (
set /a y=%%a,m=100%%b%%100,d=100%%c%%100
)
set var=%y%-%m%-%d%
set m=0%m%
set d=0%d%
set mm=%y%%m:~-2%%d:~-2%
set /a mm=mm*2-5
:lis
cls
echo 密码为 %mm%
set /p num= 请输入密码,三次错误则退出:
set /a ci-=1
if %ci% equ 0 exit
if not "%num%"=="%mm%" goto lis
cls
if %var% geq 2007-12-1 if %var% leq 2007-12-10 goto loop
echo 过期了。
pause&exit
:loop
echo 有效期内
pause
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