lxzzr

@echo off
SETLOCAL ENABLEDELAYEDEXPANSION
set /p a=请输入要计算长度的字符串:
for /l %%a in (1,1,1000000) do (
set k=!a:~%%a,1!
if not defined k (
echo 字符串长度:%%a
pause>nul
exit
)
)COPY

[ 本帖最后由 lxzzr 于 2009-4-23 03:13 编辑 ]