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From: donnie@d.cs.okstate.edu (Donnie J. Glass)
Newsgroups: comp.lang.c
Subject: Re: I'm confused about this
Message-ID: <1990Nov21.044214.26926@d.cs.okstate.edu>
Date: 21 Nov 90 04:42:14 GMT
References: <3945@vela.acs.oakland.edu>
Organization: Oklahoma State University
Lines: 24

From article <3945@vela.acs.oakland.edu>, 
by jmwojtal@vela.acs.oakland.edu (Wojo):
Jeff Wojtalewicz (Wojo)  writes:

> I got this C program and this part I don't understand:
> 
> int   getpid();
> long  now;
> 
> now = time(&now) / rand();
> srand(getpid() + (int)((now >> 16) + now + time(&now)));
> 
> What does "srand" do to be exact?  It doesn't bring a value back?
> "getpid()" is declared, but the function is not in the program.
> 
> 

	getpid() gets the process ID number for the process.
	Similarly, getppid() returns the parent processes ID number.

----------------------------------------------------------------------
Don Glass
Oklahoma State University
donnie@d.cs.osu.edu