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FOR loop ends one above where it's supposed to [message #71138]

Tue, 01 June 2010 17:26

Bulgakovv
Messages: 2
Registered: June 2010

Junior Member

Maybe there are previous posts about this, but I tried to google
around without any success so I'll throw the question out.

When I make a FOR loop from for example 0 to 5, the counter ends on
the value one step above what I stated. Here's an example:

> for i =0,5 do print,i
0
1
2
3
4
5
> print,i
6

Is this how it's supposed to be in IDL? To me it seems a little bit
weird, why would the FOR loop count one extra step in the end? Took me
a couple of hours to realize what was going on in my code as I took
for granted this was not the case, so now I'm interested in
understanding why IDL is behaving like this. Thanks and sorry if
reposting!

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