Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.c > #76574

Re: Game of life from K&R: question about switch statement

Show all headers | View raw

"glen herrmannsfeldt" <gah@ugcs.caltech.edu> wrote in message 
news:n2g25a$4jk$1@speranza.aioe.org...
> James Kuyper <jameskuyper@verizon.net> wrote:
>> On 11/17/2015 11:34 AM, Alla _ wrote:
>
> (snip)
>>> Please, take a look a the program from K&R tutorial; it has descriptive
>>> comments, therefore I will skip adding my ones. I would be grateful
>>> for the help.
>
> (snip)
>> For any given location in the array, i and j, there are eight different
>> locations which are considered to be neighboring: array[i-1][j-1],
>> array[i-1][j], array[i-1][j+1], array[i][j-1], array[i][j+1,
>> array[i+1][j-1], array[i+1][j], array[i+1][j+1].  This definition is
>> adjusted appropriately at the edges and corners of the array, where some
>> of the locations that would ordinarily be considered neighbors, don't
>> actually exist.
>
> The tradition for game of life is a torodial world. When you go off
> one direction, such as +y or -y, it wraps around. The other direction
> (+x or -x) it wraps with an offset of 1.
>
> Sometimes it is simplified to save work of the programmer.
>
> In the jury assembly room for the City of Seattle courts there is
> a big panel with elevator buttons that plays the game of life.
> I think it doesn't use the toroidal coordinate system, though.
>

Spare Time Gizmos also sold an electronic project that would play the game 
of life in a picture frame using individual LED's for the cells.

-- 

numerist at aquaporin4 dot com

Back to comp.lang.c | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Game of life from K&R: question about switch statement Alla _ <modelling.data@gmail.com> - 2015-11-17 08:34 -0800
  Re: Game of life from K&R: question about switch statement Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-11-17 11:46 -0500
  Re: Game of life from K&R: question about switch statement James Kuyper <jameskuyper@verizon.net> - 2015-11-17 11:56 -0500
    Re: Game of life from K&R: question about switch statement glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-11-17 20:19 +0000
      Re: Game of life from K&R: question about switch statement "Charles Richmond" <numerist@aquaporin4.com> - 2015-11-19 17:48 -0600
  Re: Game of life from K&R: question about switch statement Stephen Sprunk <stephen@sprunk.org> - 2015-11-17 12:27 -0600
  Re: Game of life from K&R: question about switch statement Keith Thompson <kst-u@mib.org> - 2015-11-17 15:12 -0800

csiph-web