From:	"Ingo Ruhnke" <ruhnke AT owl-online DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	problem with readkey()
Date:	16 Oct 1997 19:21:35 GMT
Organization:	Telemedia News Server
Lines:	45
Message-ID:	<01bcda6c$d9e94d80$0200a8c0@ingo>
NNTP-Posting-Host:	gtso-m71-239.pool.mediaways.net
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

I got here some simple code which dosen't run as I expect it to work:

#include <stdio.h>
#include <allegro.h>

void main()
{
 allegro_init();
 install_keyboard();

 if (readkey() == 'a') {
   printf ("a was pressed");
 } else {
   printf ("a wasn't pressed");
 }
}

this didn't get me the info about that was pressed, it said every time "a
wasn't pressed", but if i modify it to this:

void main()
{
 char c;
/* ^^^^^^ */
 allegro_init();
 install_keyboard();

 if ((c = readkey()) == 'a') {
/*  ^^^^  */
   printf ("a was pressed");
 } else {
   printf ("a wasn't pressed");
 }
}

the programm works fine. Can anybody tell me why this is so. And if i use
getchar() instead of readkey() it also works like expected, so were is the
problem which this code.

Thanks
Ingo
-- 
Ingo Ruhnke
ruhnke AT owl-online DOT de
http://www.geocities/SiliconValley/Horizon/2159

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