Problem with 'For' loop execution [VBA,Excel XP]

[Angelos Markos]

I'm a VBA begginer and i've recently faced the following problem:

Suppose we have the following sub:

Sub test()
Dim i
For i = 0.6 To 0.8 Step 0.01
MsgBox (i)
Next i
End Sub

Surprisingly, in the above loop the last value (0.8) does not appear.

On the contrary, in the following sub (step is 0.1 instead of 0.01)

Sub test2()
Dim i
For i = 0.6 To 0.8 Step 0.1
MsgBox (i)
Next i
End Sub

everything is ok.
How do you explain that?

 

[Don Guillett]

try to .81

 

[Tom Ogilvy]

http://www.cpearson.com/excel/rounding.htm

I expect you are getting accumulated rounding error.