告诉你两种判断闰年的简单方法

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　　Option Explicit

Private Sub Command1_Click()
Print 2000
Print IsLeapYearA(2000)
Print IsLeapYearB(2000)
Print 1999
Print IsLeapYearA(1999)
Print IsLeapYearB(1999)
Print 1998

Print IsLeapYearA(1998)
Print IsLeapYearB(1998)
Print 1997
Print IsLeapYearA(1997)
Print IsLeapYearB(1997)
Print 1996
Print IsLeapYearA(1996)
Print IsLeapYearB(1996)
End Sub

Function IsLeapYearA(ByVal yr As Integer) As Boolean
If ((yr Mod 4) = 0) Then IsLeapYearA = ((yr Mod 100) ＞ 0) Or ((yr Mod 400) = 0)
End If
End Function

Public Function IsLeapYearB(ByVal yr As Integer) As Boolean
IsLeapYearB = Day(DateSerial(yr, 2, 29)) = 29
End Function

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