qpzlsn

看了楼主的第一堂课，我是照葫芦画瓢，不知道对不对！

A1
@echo off
set str=I love,bbs;bathome.net
for %%I in (I love,bbs;bathome.net) do echo %%I
pause>nul

A2
@echo off
set str=I love,bbs;bathome.net
for %%i in (%str%) do (if %%i==cn echo %%i)
pause>nul