From:	"John M. Aldrich" <fighteer AT cs DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Thanks for help but...
Date:	Tue, 12 May 1998 19:12:13 -0400
Organization:	Two pounds of chaos and a pinch of salt.
Lines:	42
Message-ID:	<3558D74D.4F4A@cs.com>
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NNTP-Posting-Host:	ppp128.cs.net
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Daleg wrote:
> 
> i would like to make a function what randomizes songs at start up
> i got 3 sings in datafile but i dont know how to make a good function,
> i did try to use rand, IF, and else but i dont like them, it's not what i
> want

If you want to generate random numbers, you should first seed the random
number generator with a value that's not predictable.  One of the best
values to use is the system clock.  Therefore, a bit of code might look
like this:

#include <stdlib.h>
#include <time.h>

#define NUM_SONGS 3

int main( void )
{
    int song;

    srand( (int) time( NULL ) );
    song = rand() % NUM_SONGS;

    /* your code here */

    return 0;
}

If you have any questions, please feel free to ask.  I should also point
out that rand() is not a very good RNG if all you want is the lower
bits; for really good random numbers you should use random()/srandom().

hth

-- 
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|      John M. Aldrich       | "Autocracy is based on the assumption|
|       aka Fighteer I       | that one man is wiser than a million |
|   mailto:fighteer AT cs DOT com   | men.  Let's play that over again,    |
| http://www.cs.com/fighteer | too.  Who decides?"   - Lazarus Long |
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