Microsoft KB Archive/171128

= 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
Microsoft provides programming examples for illustration only, without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This article assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. Microsoft support professionals can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific needs. If you have limited programming experience, you may want to contact a Microsoft Certified Partner or the Microsoft fee-based consulting line at (800) 936-5200. For more information about Microsoft Certified Partners, please visit the following Microsoft Web site:

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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

