Date: Thu, 21 Nov 1996 10:03:34 GMT
From: kvhk AT ivs4 DOT barco DOT com (Koen Van Herck)
Message-Id: <9611211003.AA01758@ivs4.>
To: djgpp AT delorie DOT com
Subject: Proper use of rand()
Reply-To: Koen DOT VanHerck AT barco DOT com

It seems that rand() and random() always return the same numbers when
a program is started. 

I fixed this by setting the seed to a number depending on the clock: 

unsigned long u;
u = time(0);
u = u ^ (u << 16);
srand(u); 

You need to wait at least 1 second between different runs to get other
random numbers.

It would be better to use a function that changes more often than
time(), but I didn't find one.

----
Koen Van Herck
Electronic Design Engineer
E-mail: Koen DOT VanHerck AT barco DOT com

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