From:	"John S. Fine" <johnfine AT erols DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: funny for and while loop and c++ problems
Date:	Thu, 04 Feb 1999 14:37:49 -0500
Lines:	34
Message-ID:	<36B9F70D.24CC@erols.com>
References:	<36B9D646 DOT DFD01E97 AT hotmail DOT com>
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To:	djgpp AT delorie DOT com
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pcgamesmaster AT hotmail DOT com wrote:

> what is the difference between the first and second snippet of code?
> why doesn't the first one work in djgpp?
> 
> ========================================================================
>     lp = 0;
>     while (!key[KEY_ENTER]) {
>         while (lp < 256) {
. . .
>             }
>             lp += 1;
>         }
>         set_palette(pal);
>     }
> ========================================================================
>     while (!key[KEY_ENTER]) {
>         for (lp = 0; lp < 256; lp++) {
. . .
>             }
>         }
>         set_palette(pal);
>     }
> ========================================================================
> 
> i think the problem with the first one is that it doesn't execute the
> innermost while loop. why?

  The most obvious difference is that the "lp=0" occurs ouside
the outer loop in the first version and occurs inside the
outer loop in the second.
-- 
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