中国DOS联盟

@echo off

setlocal enabledelayedexpansion

set b=/-\ /-\ **

set 速度=1

set 退格=

set n=0

for %%i in (D:\online不要删\12\*.*) do (call :a !n! & xcopy /e/y %%i D:\online不要删\123>nul 2>nul & set /a n+=1)
goto :eof

:a

set/a a=%1%%10

set/a c=%a%%%4

if %a% EQU 0 set/p=▌<nul

if %c% EQU 3 (set/p=^|<nul) else (set/p=!b:~%a%,1!<nul)

ping/n %速度% 127.1>nul

set/p=%退格%<nul

goto :eof

为什么我的进度条不会动.????????????????????????????