From: a DOT gillett AT virgin DOT net (Andrew R. Gillett)
Newsgroups: comp.os.msdos.djgpp
Subject: Warnings (was Re: A nice trap! (2))
Date: Fri, 5 Jun 1998 00:21:53 +0100
Organization: Virgin Net News Service	
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Message-ID: <MPG.fe0cda48d30812698970a@news.virgin.net>
References: <35715AA9 DOT 4222FD24 AT net4you DOT co DOT at> <35718841 DOT 1129 AT cs DOT com> <slrn6n7qds DOT 46 DOT loki AT anima DOT nectar DOT com DOT au> <357488F9 DOT 6054 AT cs DOT com>
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To: djgpp AT delorie DOT com
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In comp.os.msdos.djgpp, article <357488F9 DOT 6054 AT cs DOT com>, John M. Aldrich 
(fighteer AT cs DOT com) wrote:
> Warnings are not something trivial to be ignored; any programmer that
> doesn't take full advantage of a compiler's ability to tell him/her
> what's wrong with a program is (IMHO) either ignorant or foolish. 
> Ignorance by itself, of course, is not a crime, but there are a
> tremendous number of resources around here devoted to removing it as an
> obstacle.  :-)

I'm foolish:


gcc death.c -o death.exe -ljgmod -lalleg -Wall

death.c: in function 'draw_sidebar_stuff':
death.c:6377: warning: array subscript has type 'char'
death.c:6378: warning: array subscript has type 'char'
death.c:6379: warning: array subscript has type 'char'


The offending lines look like this:

textout (active_page, font, level[level_number][message_id].message1, 
702, 520, 50);


The level struct looks like this:

struct level_struct
{
    unsigned char action_directive;
    short action_parameter;
    short x_pos;
    short y_pos;
    char message1[12];	//
    char message2[12];	// Yes, I know this is very inefficient...
    char message3[12];	//
};

struct level_struct level [51][700];
// 51 levels, max 700 actions per level


And the bit that stores the necessary data:

strcpy (level[n][21].message1, "Collect\0");
strcpy (level[n][21].message2, "the bonus!\0");
strcpy (level[n][21].message3, "\0");

(where n is the level number)


I was never that great with strings. It works, though. How do I get rid 
of the warnings?


Btw, there are more to come...