Xref: news2.mv.net comp.os.msdos.djgpp:7955
From: Lievre Ludovic <lievre AT mr DOT insa-tlse DOT fr>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: DJGPP random blues
Date: Tue, 27 Aug 1996 21:20:20 +0200
Organization: INSA Toulouse
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Message-ID: <32234A74.14A2@mr.insa-tlse.fr>
References: <01bb942b$d2fb26c0$0100007f AT hiway DOT co DOT uk DOT hiway DOT co DOT uk>
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CC: mark DOT gilbert AT pop3 DOT hiway DOT co DOT uk
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Mark Gilbert wrote:
> 
> I can't figure rand() and random() out. They both seem positively un-random
> giving out the same numbers every time.
> 

> Does anyone know of a problem with these functions in DJGPP?
> Does anyone know how to get them working?

When you use rand(), you must initialize a 'seed' with srand. 
Such a code initialize the seed with current time.

include <stdlib.h>
#include <stdio.h>
#include <time.h>
int main()

{
    int n; 
    long seed;

    time(&seed);
    srand(seed); 

    n=rand();

    printf ("\n A random number : %d ", n); 
}


So you get differents values each time differents. If you don't
initialize the seed, you get always the same random values.

Once I forgot to initialize the seed, amd I had always the same values,
may be was it the same problem as you?

-- 
/* lievre @mr.insa-tlse.fr */
int main(){char _1='_';int _0x01=0x01^0x01; 
char *_="C{ic}cj(KO AT RQG!h{z}6$%dz)okwb/ul|k#jy%wdncsvf";
while (_[_0x01]) putchar (_[_0x01]^_1&0xf^_0x01++&0xf);
putchar (0x14>>1);}