|Non-declared Variables email@example.com (Avatar) (2006-10-16)|
|Re: Non-declared Variables firstname.lastname@example.org (Wolfram Fenske) (2006-10-17)|
|Re: Non-declared Variables email@example.com (2006-10-24)|
|Re: Non-declared Variables Peter_Flass@Yahoo.com (Peter Flass) (2006-10-26)|
|Re: Non-declared Variables firstname.lastname@example.org (Pascal Bourguignon) (2006-10-28)|
|Re: Non-declared Variables ArarghMail610@Arargh.com (2006-10-28)|
|Re: Non-declared Variables email@example.com (Gene Wirchenko) (2007-01-28)|
|Date:||28 Oct 2006 01:25:11 -0400|
|Organization:||Ripco Communications Inc.|
|References:||06-10-064 06-10-098 06-10-109|
On 26 Oct 2006 00:28:58 -0400, Peter Flass <Peter_Flass@Yahoo.com>
>> I don't think that it is a good idea when language definition allows
>> you to use variables without declaration.
>> First of all, it leads to bugs which is rather hard to find.
>I would expect the compiler to issue a message for this, unless
>undeclared variables are the norm for this language, as in Rexx. PL/I,
>for example, has language-specified defaults and default rules, but all
>compilers I know of also warn.
MS Basic 16-bit compilers for the most part, didn't.
Come to think of it, I don't think that the 32-bit ones do either.
The exception to that is that some support an "OPTION EXPLICIT" which
causes an error for undeclared variables, when used.
ArarghMail610 at [drop the 'http://www.' from ->] http://www.arargh.com
BCET Basic Compiler Page: http://www.arargh.com/basic/index.html
[BASIC never required declarations, even for arrays. -John]
Return to the
Search the comp.compilers archives again.