Microsoft KB Archive/171128

Knowledge Base

WD97: Macro to Determine the Number of Days in a Specified Month

Article ID: 171128

Article Last Modified on 1/20/2007

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APPLIES TO

• Microsoft Word 97 Standard Edition

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This article was previously published under Q171128

SUMMARY

This article contains a sample Microsoft Visual Basic for Applications macro that determines the number of days in a specified month.

MORE INFORMATION

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For more information about the support options that are available and about how to contact Microsoft, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

The following macro prompts for a date in mm/dd/yyyy format and prints the number of days in the specified month in a message box.

   Sub Date_NumDaysInMonth()
      Dim iMon As Integer
      Dim sDate As String
   PromptForDate:
      sDate = InputBox("Enter a date in the mm/dd/yyyy format")
      ' If Cancel was pressed, end macro.
      If sDate = "" Then Exit Sub
      ' If Date entered is not a valid date, display message.
      If Not IsDate(sDate) Then
         MsgBox "Please enter a valid date."
         GoTo PromptForDate
      End If
      ' The Month function returns the month number (1-12) of the date.
      Select Case Month(sDate)
         Case 4, 6, 9, 11
            sNumDays = "30"
         Case 2
            If Year(sDate) Mod 4 = 0 Then
               sNumDays = "29"
            Else
               sNumDays = "28"
            End If
         Case Else
            sNumDays = "31"
      End Select
      MsgBox Format$(sDate, "mmmm") & " of " & Format$(sDate, "yyyy") _
         & " has " & sNumDays &" days."
   End Sub
                

The macro takes leap years into consideration when computing the number of days in February. For example, this routine divides the year by 4 and if the remainder is 0, there are 29 days in February of the year specified. Otherwise, there are 28 days in February of the year specified.

For additional information, please see the following article in the Microsoft Knowledge Base:

173707 OFF97: How to Run Sample Code from Knowledge Base Articles

REFERENCES

For more information about getting help with Visual Basic for Applications, please see the following article in the Microsoft Knowledge Base:

163435 VBA: Programming Resources for Visual Basic for Applications

Additional query words: wordcon vb vba vbe

Keywords: kbcode kbdtacode kbhowto kbmacroexample kbprogramming KB171128

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