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A simple IF statement question [message #42513]

Mon, 14 February 2005 05:55

andry_william
Messages: 3
Registered: December 2004

Junior Member

Dear IDL user,

I am using IDL 6.1 on Linux SUSE. I am writing a simple code using the
IF statement and am wondering about the following result:

IDL> IF 1 THEN PRINT, '1' ELSE PRINT, 'None'
1
IDL> IF 2 THEN PRINT, '2' ELSE PRINT, 'None'
None
IDL> IF 19 THEN PRINT, '19' ELSE PRINT, 'None'
19
IDL> IF 24 THEN PRINT, '24' ELSE PRINT, 'None'
None
IDL> IF 0 THEN PRINT, '0' ELSE PRINT, 'None'
None

Am I wrong when I expect the IF statement to return always TRUE if the
condition is not 0 (I mean something like 1,2,3,4,....)?

Thanks for any comments.

Andry

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[Message index]

		A simple IF statement question By: andry_william on Mon, 14 February 2005 05:55
		Re: A simple IF statement question By: Benjamin Luethi on Mon, 14 February 2005 06:37
		Re: A simple IF statement question By: David Fanning on Mon, 14 February 2005 07:11
		Re: A simple IF statement question By: David Fanning on Mon, 14 February 2005 06:49

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