运行效果:

VB编程:IsNumeric判断闰年-48_彭世瑜_新浪博客_c++

 

运行代码:

方法一:

Private Sub Command1_Click()
    Dim myYear As Boolean
    If IsNumeric(Text1.Text) Then
        If Text1.Text Mod 400 = 0 Then
            myYear = True
        ElseIf Text1.Text Mod 4 = 0 And Text1.Text Mod 100 <> 0 Then
            myYear = True
        Else
            myYear = False
        End If
        If myYear = True Then
            Picture1.Print Text1.Text & "是闰年!"
        Else
            Picture1.Print Text1.Text & "是平年!"
        End If
    Else
        Picture1.Print Text1.Text & "不是数字"
    End If
End Sub

 

方法二:

Public Function LeapYear(ByVal yea As Integer) As Boolean     '闰年函数
    If (yea Mod 4) = 0 Then
        LeapYear = (yea Mod 100 > 0) Or (yea Mod 400 = 0)
    End If
End Function

学习总结:

通用的步骤,可以使用函数,方便以后调用。