实例:@echo offset NUM=10000for /f %%i in (字符.txt) do (set JSZF=%%ifor /L %%. in (0,1,%NUM%) do ( Call echo %%JSZF:~%%.,1%% >>1.txt)pause)解析: for /L %%var in (start#, step#, end#) do (command1)对将start#的值赋予%%var,判断%%var是否小于等于end#,如果是则执行command1中的命令,并把st