From: cziwkga AT ulcc DOT ac DOT uk (Kevin Ashley)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Help! Random is not working right
Date: 8 Apr 1997 13:08:49 GMT
Organization: University of London Computer Centre
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Distribution: world
Message-ID: <5idg11$iqr@calypso.ulcc.ac.uk>
References: <3349B612 DOT 68C AT ucsu DOT Colorado DOT edu>
Reply-To: k DOT ashley AT ulcc DOT ac DOT uk
NNTP-Posting-Host: silver-e.ulcc.ac.uk
To: djgpp AT delorie DOT com
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In article <3349B612 DOT 68C AT ucsu DOT Colorado DOT edu>, William Heymann <heymann AT ucsu DOT Colorado DOT edu> writes:
>
|>random() & 9 only returns 0, 1, 8, and 9. 

That's all it can return. "&" means bit-wise and. 9 only has the 8 bit
and the 1 bit on, and the only numbers you can make with those bits
are 0,1 8 and 9. If you want numbers in a range, you need to do
a modulo divide: random() % 10 will give you numbers between 0 and 9,
inclusive.

------------------------------------------------------------------------------
Kevin Ashley                              K DOT Ashley AT Ulcc DOT ac DOT uk
Development Manager      http://www.ulcc.ac.uk/staff/Kevin+Ashley
University of London Computer Centre.      ...ukc!ncdlab!K.Ashley
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