@echo off&setlocal enabledelayedexpansion

for /f "tokens=1-3 delims=/-" %%a in ("%date%") do (
    set "year=%%a"
    set "month=%%b"
    set "day=%%c"
)

rem 显示当前日期
echo 当前日期: %year%年%month%月%day%日
echo,

rem 推算前7天的日期并显示
set adN=0
for /L %%i in (1, 1, 7) do (
    set /a adN+=1
    set /a "prev_day=%day%-%%i"
    set "prev_month=!month!"
    set "prev_year=!year!"
        if !prev_day! equ 0 (set "prev_day=31" & set /a "prev_month=!month!-1")
        if !prev_day! equ -1 (set "prev_day=30" & set /a "prev_month=!month!-1")
        if !prev_day! equ -2 (set "prev_day=29" & set /a "prev_month=!month!-1")
        if !prev_day! equ -3 (set "prev_day=28" & set /a "prev_month=!month!-1")
        if !prev_day! equ -4 (set "prev_day=27" & set /a "prev_month=!month!-1")
        if !prev_day! equ -5 (set "prev_day=26" & set /a "prev_month=!month!-1")
        if !prev_day! equ -6 (set "prev_day=25" & set /a "prev_month=!month!-1")
if !prev_day! geq 1 (if !prev_day! lss 10 (
set /a "prev_day=!prev_day! 
set "prev_day=0!prev_day!"
))
if !prev_month! geq 1 (if !prev_month! lss 10 (
set /a "prev_month=!prev_month!"
set "prev_month=0!prev_month!"
))
if !month! equ 1 (if !day! equ 1 (set /a prev_month=12 & set /a prev_year=!year! - 1))

        echo 前!adN!天日期为： !prev_year!年!prev_month!月!prev_day!日

)
pause>nul 2>nul
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@echo off&setlocal enabledelayedexpansion
 
for /f "tokens=1-3 delims=/-" %%a in ("%date%") do (
    set "year=%%a"
    set "month=%%b"
    set "day=%%c"
)
rem 显示当前日期
echo 当前日期: %year%年%month%月%day%日
echo,
rem 推算前7天的日期并显示
set adN=0
for /L %%i in (1, 1, 7) do (
set /a adN+=1
set DaysAgo=%%i
for /f %%j in ('powershell -c "Get-Date (Get-Date).AddDays(-!DaysAgo!) -uformat "%%Y年%%m月%%d日""') do (
set "DstDate=%%j"
echo 前!adN!天日期为：!DstDate!
)
)
pause>nul 2>nul
复制代码