- set /a a=^(%nian%/100)
- set /a b=^(%nian%/400)
- set /a c=^(%nian%/4)
- set /a a=%nian%-%a%*100
- set /a b=%nian%-%b%*400
- set /a c=%nian%-%c%*4
- set ed=28
- if %a% equ 0 (
- if %b% equ 0 set ed=29
- ) else (
- if %c% equ 0 set ed=29
- )
- if %ed% equ 29 echo.&&echo %nian%年是闰年&&echo.
- if %ed% equ 28 echo.&&echo %nian%年是平年&&echo.
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