March 2003
Intermediate to advanced
512 pages
14h 30m
English
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Name
CInt Function
Syntax
CInt(expression)expressionUse: Required
Data Type: Numeric or String
The range of expression is -32,768 to 32,767; fractions are rounded.
Return Value
expression cast as an integer
type.
Description
Converts expression to a type of
integer; any fractional portion of
expression is rounded.
Rules at a Glance
expressionmust evaluate to a numeric value; otherwise, a type mismatch error is generated.If the value of
expressionis outside the range of the Integer data type, an overflow error is generated.When the fractional part of
expressionis exactly 0.5, CInt always rounds to the nearest even number. For example, 0.5 rounds to 0, and 1.5 rounds to 2.
Example
<HTML>
<HEAD>
<SCRIPT LANGUAGE="VBScript">
Option Explicit
Sub cmdAdd_OnClick( )
Dim iSum, sNum1, sNum2
sNum1 = Window.Document.frmAdd.txtText1.Value
sNum2 = Window.Document.frmAdd.txtText2.Value
If IsNumeric(sNum1) And IsNumeric(sNum2) Then
iSum = CInt(sNum1) + CInt(sNum2)
Alert "The sum is: " & iSum
Else
Alert "The values you enter in the text boxes must be numeric."
End If
End Sub
</SCRIPT>
</HEAD>
<BODY>
<FORM NAME="frmAdd">
<INPUT TYPE="text" NAME="txtText1"><BR>
<INPUT TYPE="text" NAME="txtText2"><BR>
<INPUT TYPE="button" NAME="cmdAdd" VALUE="Sum">
</FORM>
</BODY>
</HTML>Programming Tips and Gotchas
Use IsNumeric to test whether
expressionevaluates to a number before performing the conversion.CInt differs from the Fix and Int functions, which truncate, rather than round, the fractional part of a number. Also, ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.