::code by lxmxn @ cn-dos.net . ::目的：帮助新手们更好的理解变量字符截取功能. ::Date 2006-12-16 . ::说明：有的变量截取之后值为空，这是正常的. :: @echo off&setlocal EnableDelayedexpansion ::设置变量var的值： set var=0123456789ABCDEF call :begin for /l %%a in (1,3,15) do ( for /l %%b in (1,4,15) do ( call :printf %%a %%b ) ) call :begin for /l %%a in (1,4,15) do ( for /l %%b in (-1,-3,-15) do ( call :printf %%a %%b ) ) call :begin for /l %%a in (-2,-3,-15) do ( for /l %%b in (1,4,15) do ( call :printf %%a %%b ) ) call :begin for /l %%a in (-1,-4,-15) do ( for /l %%b in (-2,-3,-15) do ( call :printf %%a %%b ) ) pause endlocal&cls&echo. echo 演示结束了，任意键退出…… pause>nul goto :eof ::输出结果： :printf echo %%var:~%1,%2%% 截取之后的字符为: !var:~%1,%2! goto :eof ::清理屏幕： :begin echo\&pause&cls&echo. echo 变量var的值为: %var% echo. goto :eof