怎樣用VB編一個(gè)程序，要求輸入一個(gè)年份，判斷出是否為閏年？

Dim yea As Integer

創(chuàng)新互聯(lián)建站專注于長(zhǎng)洲企業(yè)網(wǎng)站建設(shè),響應(yīng)式網(wǎng)站建設(shè),商城網(wǎng)站制作。長(zhǎng)洲網(wǎng)站建設(shè)公司,為長(zhǎng)洲等地區(qū)提供建站服務(wù)。全流程按需制作網(wǎng)站，專業(yè)設(shè)計(jì)，全程項(xiàng)目跟蹤，創(chuàng)新互聯(lián)建站專業(yè)和態(tài)度為您提供的服務(wù)

Dim LeapYear As Boolean

yea = InputBox("請(qǐng)輸入年號(hào)：")

If ((yea Mod 4) = 0) Then

LeapYear = ((yea Mod 100) 0) Or ((yea Mod 400) = 0)

End If

If LeapYear Then MsgBox yea "年是閏年。" Else MsgBox yea "不是閏年"

在vb.net中，如何計(jì)算出2000-2100年之間的閏年？輸出到文本框，并統(tǒng)計(jì)輸出閏年的個(gè)數(shù)？主要是統(tǒng)計(jì)個(gè)數(shù)

這樣：

Private?Sub?Button1_Click(sender?As?Object,?e?As?EventArgs)?Handles?Button1.Click

Dim?leapyears()?As?Integer?=?GetLeapYears(2000,?2100)

Dim?str?As?String

Try

Dim?count?As?Integer?=?UBound(leapyears)?+?1

str?=?"閏年個(gè)數(shù):"?+?count.ToString

For?i?=?0?To?UBound(leapyears)

str?+=?"?"?+?leapyears(i).ToString

Next

TextBox1.Text?=?str

Catch?ex?As?Exception?

End?Try

End?Sub

'''?summary

'''?獲取指定年份區(qū)間中所有閏年組成的數(shù)組

'''?/summary

'''?param?name="StartYear"起始年份/param

'''?param?name="EndYear"結(jié)束年份/param

'''?returns/returns

'''?remarks/remarks

Private?Function?GetLeapYears(StartYear?As?Integer,?EndYear?As?Integer)?As?Integer()

Dim?leapyears()?As?Integer?=?Nothing

Dim?index?As?Integer?=?0

For?i?=?StartYear?To?EndYear

If?(i?Mod?400?=?0)?Or?(i?Mod?4?=?0?And?i?Mod?100??0)?Then

ReDim?Preserve?leapyears(index)

leapyears(index)?=?i

index?+=?1

End?If

Next

Return?leapyears

End?Function

擴(kuò)展資料：

注意事項(xiàng)

DateSerial返回包含指定的年、月、日的 Variant (Date)。

語(yǔ)法：DateSerial(year, month, day)

Private Function MonthToLeapYear(ByVal Yea As Integer) As Boolean

MonthToLeapYear = Day(DateSerial(Yea, 2, 29)) = 29

End Function

Private Sub Command1_Click()

If Len(Text1.Text) = 4 Then

? If MonthToLeapYear(Text1.Text) = True Then

? ? ? Print Text1.Text "年是閏年"

? Else

? ? ? Print Text1.Text "年是平年"

? End If

Else

?Print "錯(cuò)誤：請(qǐng)輸入正確的年份！"

End If

End Sub

在VB.NET中進(jìn)行日期處理時(shí)，避免手工判斷或計(jì)算是個(gè)好主意，因?yàn)槭止び?jì)算由于代碼的質(zhì)量問(wèn)題可能不準(zhǔn)確?？梢允褂?NET提供的類的功能進(jìn)行日期處理。

例如，如果需要判斷給定的某年是否閏年，可以使用VB.NET的IsLeapYear函數(shù)。下面是如何使用該函數(shù)的一個(gè)例子：

Private Sub LeapYearCheck()

Dim bLeapYear AsBoolean

bLeapYear = Date.IsLeapYear(Now.Year)

MessageBox.Show(bLeapYear)

bLeapYear = Date.IsLeapYear(2004)

MessageBox.Show(bLeapYear)

End Sub

輸入年份，編程判斷是否為閏年 VB.NET

Private Sub Command1_Click()

Dim year As Integer, y As Integer

year = Val(InputBox("要判斷的年份是："))

Call runnian(year, y)

If y = 1 Then

Print Str(year); Spc(2); "年是閏年!"

Else

Print Str(year); Spc(2); "年不是閏年!"

End If

End Sub

Public Sub runnian(n As Integer, x As Integer)

Dim leap As Integer

If n Mod 400 = 0 Then

leap = 1

ElseIf n Mod 4 = 0 And n Mod 100 0 Then

leap = 1

Else

leap = 0

End If

x = leap

End Sub

VB.NET 根據(jù)年月日判斷是否為閏年或者平年！

VB.NET 判斷是否為閏年或者平年！

Public Class Form1

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

閏年平年(TextBox1.Text)

End Sub

Function 閏年平年(ByVal MyString As String) As String

Dim MyDate As DateTime = Convert.ToDateTime(MyString)

Dim MyInfo As String = MyDate.Year.ToString() + "年是："

If (DateTime.IsLeapYear(MyDate.Year) = True) Then

MyInfo += "閏年。"

Else

MyInfo += "平年。"

End If

MessageBox.Show(MyInfo, "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information)

Return 1

End Function

End Class

VB編程 判斷閏年

Private?Sub?Form_Click()

Dim?a?As?Integer

a?=?Val(InputBox("輸入年份"))

If?a?Mod?400?=?0?Then

Print?"是瑞年"

ElseIf?a?Mod?4?=?0?And?a?Mod?100??0?Then

Print?"是瑞年?"

Else

Print?"不是瑞年"

End?If

End?Sub