counting digits in an integer

counting digits in an integer

• bpeikes

  Convert the integer to a string and use the Length property. If you are using an input from a textbox or inputbox, it's already a string. Then just do this:
  

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

  Dim N As Integer

  N = TextBox1.Text.Length

  TextBox2.Text = N.ToString

  End Sub

  If it's a console application, the input variable assigned with Console.ReadLine is a also a string.

  
  
  

• Philip W

  I'd wrap the function up in a method and place in a class library so you can easily reuse this in your applications. The only reason I suggest wrapping it up in a function is that I figure you will probably reuse this function. Also the input parameter is a integer and the return value is an integer also. You can change the input to string and remove the .tostring call

  Function DigitCount(byval int_Value as integer) as integer

  if int_Value.tostring.length > 0 then
  Return int_Value.tostring.length
  else
  Return 0
  end if

  End Function

  In the next release of VB you will have something called extension methods which will allow you to create additional methods for system types - so can create you own NumberOfCharacters method which you can use on standard system numeric types such as integer etc.

  
  
• counting digits in an integer