@echo off
setlocal enabledelayedexpansion
echo "請(qǐng)輸入關(guān)閉顯示器的時(shí)間，單位是分鐘，默認(rèn)1分鐘"
set /p "timeout="
if NOT DEFINED timeout (echo "你輸入的時(shí)間是1分鐘" set "timeout=1" goto set_monitor_timeout
)else ( rem 注意這里else語句和括號(hào)的位置關(guān)系
echo "你輸入的時(shí)間是%timeout%分鐘"
)

:set_monitor_timeout
echo "你輸入的時(shí)間是%timeout%分鐘"
echo "當(dāng)前系統(tǒng)使用的電源管理方案是："
echo ==============================================
powercfg -list >c:\powercfg_mingli |@findstr "*" c:\powercfg_mingli
powercfg -x -monitor-timeout-ac %timeout%
echo ==============================================
del /f /s /q c:\powercfg_mingli
pause