From: toudi <pienkny AT friko6 DOT onet DOT pl>
Newsgroups: comp.os.msdos.djgpp,comp.os.msdos.programmer
Subject: Re: Iteration vs. Recursion...
Date: Thu, 22 Jul 1999 22:40:29 +0200
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com



Tom napisał(a):

> I have a keyboard input program that runs one thing if one key is entered
> and another if another key is entered.  There are about ten different
> options.  That means I have ten different if statements.  I am using
> recursion because after I get one input I do the program over again.
>
> The only problem with this program is that I have to hold down the key for
> about a second before anything is recognized.  Is there any way to speed
> this up?  Possibly by using iteration instead of recursion.  Here is the
> code.   Any suggestions are greatly appreciated.  I left out the program
> names and variables not needed.  I use getch to catch the keystrokes.  I
> tried using the bioskey but that didn't speed anything up.  I am using DJGPP
> to compile this:
>
> /*********start code********
>
> {
> if (getch() == x)
> {run_program();
> run_program();
> exit(0);}
> if (getch() == y)
> run_program();
> if (getch() == z)
> run_program();
> if (getch() == a)
> run_program();
> if (getch() == b)
> run_program();
> if (getch() == c)
> run_program();
> if (getch() == d)
> run_program();
> if (getch() == e)
> {run_program();
> if ((getch() == f || (getch() == g))
> run_program();
> if (getch() == h)
> run_program();
> if (getch() == i)
> run_program();
> }
>
> ****end code**********/
>
> Thanks.
>
> Tom

use a 'switch'

char ch = getch();

switch (ch)
{
    case 'a': run_prog(); break;
    case 'b': run(); break;
    case 'c': run(); break;
}




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