|
|
| (One intermediate revision by one user not shown) |
| Line 1: |
Line 1: |
| | + | {{VB6}} |
| | So, you want to tell if a number is an integer? | | So, you want to tell if a number is an integer? |
| | | | |
| Line 8: |
Line 9: |
| | | | |
| | Simple as that. | | Simple as that. |
| − |
| |
| − |
| |
| − | ----
| |
| − |
| |
| − |
| |
| − | Alternative
| |
| − |
| |
| − |
| |
| − | You can use the '''getVarType''' function described below to obtain more exact information on a variable type. This function returns the type of a variable. Doesn't work for all possible declarations to a variable, but with all the common ones.
| |
| − |
| |
| − | Please do note: It is a very healthy practice to actually not need any of the methods described on this page. Carefully plan and organize your code to hold the correct variable type for the specific purpose. Consider the limits that the variable may need to step over at a certain time, and plan ahead.
| |
| − |
| |
| − | If you do not know about the multiple data types, please consult this link:
| |
| − | [[http://www.officecomputertraining.com/vbtutorial/tutpages/page12.asp Data types]]
| |
| − |
| |
| − |
| |
| − | Start a new project and paste the code below as Form1 code to illustrate the example.
| |
| − |
| |
| − | Private Sub Form_Load()
| |
| − | Dim var1 As Boolean 'declare a boolean variable
| |
| − | Dim var2 As Integer 'declare an integer variable
| |
| − | Dim var3 As Byte 'declare a byte variable
| |
| − |
| |
| − | Form1.AutoRedraw = True 'setting this to true just so that .print will be visible
| |
| − | Form1.Print getVarType(var1) 'Get the type for var1
| |
| − | Form1.Print getVarType(var2) 'Get the type for var2
| |
| − | Form1.Print getVarType(var3) 'Get the type for var3
| |
| − | End Sub
| |
| − |
| |
| − | 'Function that returns variable type
| |
| − | Public Function getVarType(ByVal variable) As String
| |
| − | getVarType = TypeName(variable)
| |
| − | End Function
| |
Latest revision as of 14:03, 9 November 2005
| This article is based on Visual Basic 6. Find other Visual Basic 6 articles. |
So, you want to tell if a number is an integer?
VB has a very useful function called Int() that will give you the integer portion of a number. You can then compare this to the original, and if they match, it is an integer.
Function IsInteger(byval Value) as Boolean
IsInteger = (Int(Value) = Value)
End Function
Simple as that.
