maoweijiang

@echo off
title abc
:0
set /p hh=请输入两位数
echo %hh%|findstr "^[0-9][0-9]">tmp.tmp
for /f %%i in (tmp.tmp) do ( if %%i == %hh% echo 格式正确

&goto 1)
echo 输入格式错误
pause
del /q tmp.tmp
goto 0
:1
echo %hh%
set ss1=%hh:~0,1%
set ss2=%hh:~1,1%
set /a ss=ss1+ss2
echo %ss%
goto 0
pause>nul
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