weichenxiehou

@echo off
set /a num=10
:rol
cls
echo %num%
ping /n 1 127.0.0.1>nul
if  "%num%"=="1" (
set /a num=10&goto rol
) else (
set /a num-=1&goto rol
)
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[ 本帖最后由 weichenxiehou 于 2010-10-28 18:32 编辑 ]