yhcfsr

参详下,思考下为什么

@echo off
:index
cls
set /p "input=您的选择是:"

if "%input%"=="1" call :1
if "%input%"=="2" call :2
if "%input%"=="" exit
set "input="
pause&goto :index

:1
	echo 123
exit /b

:2
	echo 456
exit /b
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