From:	George Foot <mert0407 AT sable DOT ox DOT ac DOT uk>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: rand() or random()
Date:	5 Nov 1997 00:56:20 GMT
Organization:	Oxford University, England
Lines:	28
Message-ID:	<63og7k$8jr$4@news.ox.ac.uk>
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NNTP-Posting-Host:	sable.ox.ac.uk
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Mark Phillips wrote:

] Just for the heck of it, say I want to get a random number from 0 to
] 19.  rand() and random() appear to return numbers from 0 to 2^31.  I
] could always do rand() * 20 / 2^31 but there must be a better way.

note: 2^31 does not mean 2 raised to the 31st power; it means 2
exclusive-ORed with 31, which is 29.

Ryan Blazecka wrote:

> How about rand() % 19?   :)

You meant `rand() % 20'.

Carolyn Kelly-Pajot wrote:

: if you want a number from 0-19, type
: int random_number = rand() % 20;
: This returns the REMAINDER from division by 20, which will be between 1 and 19
: inclusive.

... and you meant `between 0 and 19 inclusive'. :)

-- 
Regards,

george DOT foot AT merton DOT oxford DOT ac DOT uk

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