NYLXS - Free Software Events

Wed May 1 18:11:24 2024

EVENTS

FREE
SOFTWARE
INSTITUTE

POLITICS

JOBS

MEMBERS'
CORNER

MAILING
LIST

NYLXS Members have a lot to say and share but we don't keep many secrets. Join the Hangout Mailing List and say your peice.

DATE 2008-08-01

HANGOUT

2024-05-01 | 2024-04-01 | 2024-03-01 | 2024-02-01 | 2024-01-01 | 2023-12-01 | 2023-11-01 | 2023-10-01 | 2023-09-01 | 2023-08-01 | 2023-07-01 | 2023-06-01 | 2023-05-01 | 2023-04-01 | 2023-03-01 | 2023-02-01 | 2023-01-01 | 2022-12-01 | 2022-11-01 | 2022-10-01 | 2022-09-01 | 2022-08-01 | 2022-07-01 | 2022-06-01 | 2022-05-01 | 2022-04-01 | 2022-03-01 | 2022-02-01 | 2022-01-01 | 2021-12-01 | 2021-11-01 | 2021-10-01 | 2021-09-01 | 2021-08-01 | 2021-07-01 | 2021-06-01 | 2021-05-01 | 2021-04-01 | 2021-03-01 | 2021-02-01 | 2021-01-01 | 2020-12-01 | 2020-11-01 | 2020-10-01 | 2020-09-01 | 2020-08-01 | 2020-07-01 | 2020-06-01 | 2020-05-01 | 2020-04-01 | 2020-03-01 | 2020-02-01 | 2020-01-01 | 2019-12-01 | 2019-11-01 | 2019-10-01 | 2019-09-01 | 2019-08-01 | 2019-07-01 | 2019-06-01 | 2019-05-01 | 2019-04-01 | 2019-03-01 | 2019-02-01 | 2019-01-01 | 2018-12-01 | 2018-11-01 | 2018-10-01 | 2018-09-01 | 2018-08-01 | 2018-07-01 | 2018-06-01 | 2018-05-01 | 2018-04-01 | 2018-03-01 | 2018-02-01 | 2018-01-01 | 2017-12-01 | 2017-11-01 | 2017-10-01 | 2017-09-01 | 2017-08-01 | 2017-07-01 | 2017-06-01 | 2017-05-01 | 2017-04-01 | 2017-03-01 | 2017-02-01 | 2017-01-01 | 2016-12-01 | 2016-11-01 | 2016-10-01 | 2016-09-01 | 2016-08-01 | 2016-07-01 | 2016-06-01 | 2016-05-01 | 2016-04-01 | 2016-03-01 | 2016-02-01 | 2016-01-01 | 2015-12-01 | 2015-11-01 | 2015-10-01 | 2015-09-01 | 2015-08-01 | 2015-07-01 | 2015-06-01 | 2015-05-01 | 2015-04-01 | 2015-03-01 | 2015-02-01 | 2015-01-01 | 2014-12-01 | 2014-11-01 | 2014-10-01 | 2014-09-01 | 2014-08-01 | 2014-07-01 | 2014-06-01 | 2014-05-01 | 2014-04-01 | 2014-03-01 | 2014-02-01 | 2014-01-01 | 2013-12-01 | 2013-11-01 | 2013-10-01 | 2013-09-01 | 2013-08-01 | 2013-07-01 | 2013-06-01 | 2013-05-01 | 2013-04-01 | 2013-03-01 | 2013-02-01 | 2013-01-01 | 2012-12-01 | 2012-11-01 | 2012-10-01 | 2012-09-01 | 2012-08-01 | 2012-07-01 | 2012-06-01 | 2012-05-01 | 2012-04-01 | 2012-03-01 | 2012-02-01 | 2012-01-01 | 2011-12-01 | 2011-11-01 | 2011-10-01 | 2011-09-01 | 2011-08-01 | 2011-07-01 | 2011-06-01 | 2011-05-01 | 2011-04-01 | 2011-03-01 | 2011-02-01 | 2011-01-01 | 2010-12-01 | 2010-11-01 | 2010-10-01 | 2010-09-01 | 2010-08-01 | 2010-07-01 | 2010-06-01 | 2010-05-01 | 2010-04-01 | 2010-03-01 | 2010-02-01 | 2010-01-01 | 2009-12-01 | 2009-11-01 | 2009-10-01 | 2009-09-01 | 2009-08-01 | 2009-07-01 | 2009-06-01 | 2009-05-01 | 2009-04-01 | 2009-03-01 | 2009-02-01 | 2009-01-01 | 2008-12-01 | 2008-11-01 | 2008-10-01 | 2008-09-01 | 2008-08-01 | 2008-07-01 | 2008-06-01 | 2008-05-01 | 2008-04-01 | 2008-03-01 | 2008-02-01 | 2008-01-01 | 2007-12-01 | 2007-11-01 | 2007-10-01 | 2007-09-01 | 2007-08-01 | 2007-07-01 | 2007-06-01 | 2007-05-01 | 2007-04-01 | 2007-03-01 | 2007-02-01 | 2007-01-01 | 2006-12-01 | 2006-11-01 | 2006-10-01 | 2006-09-01 | 2006-08-01 | 2006-07-01 | 2006-06-01 | 2006-05-01 | 2006-04-01 | 2006-03-01 | 2006-02-01 | 2006-01-01 | 2005-12-01 | 2005-11-01 | 2005-10-01 | 2005-09-01 | 2005-08-01 | 2005-07-01 | 2005-06-01 | 2005-05-01 | 2005-04-01 | 2005-03-01 | 2005-02-01 | 2005-01-01 | 2004-12-01 | 2004-11-01 | 2004-10-01 | 2004-09-01 | 2004-08-01 | 2004-07-01 | 2004-06-01 | 2004-05-01 | 2004-04-01 | 2004-03-01 | 2004-02-01 | 2004-01-01 | 2003-12-01 | 2003-11-01 | 2003-10-01 | 2003-09-01 | 2003-08-01 | 2003-07-01 | 2003-06-01 | 2003-05-01 | 2003-04-01 | 2003-03-01 | 2003-02-01 | 2003-01-01 | 2002-12-01 | 2002-11-01 | 2002-10-01 | 2002-09-01 | 2002-08-01 | 2002-07-01 | 2002-06-01 | 2002-05-01 | 2002-04-01 | 2002-03-01 | 2002-02-01 | 2002-01-01 | 2001-12-01 | 2001-11-01 | 2001-10-01 | 2001-09-01 | 2001-08-01 | 2001-07-01 | 2001-06-01 | 2001-05-01 | 2001-04-01 | 2001-03-01 | 2001-02-01 | 2001-01-01 | 2000-12-01 | 2000-11-01 | 2000-10-01 | 2000-09-01 | 2000-08-01 | 2000-07-01 | 2000-06-01 | 2000-05-01 | 2000-04-01 | 2000-03-01 | 2000-02-01 | 2000-01-01

Key: Value:

MESSAGE

DATE	2008-08-30
FROM	Ruben Safir
SUBJECT	Subject: [NYLXS - HANGOUT] Re: multi-dim arrays in c
On Fri, Aug 29, 2008 at 08:16:35PM -0400, Ruben Safir wrote: > On Fri, Aug 29, 2008 at 05:43:40PM -0400, Stephen Adler wrote: > > Guys, > > > > I've got a standard c coding question which has been nagging me for a > > while and I was wondering what you guys may think or have the correct > > solution to this problem.... > > > > Lets say I have a 2 dim array of data and the dimension sizes can change > > depending on the specific data set. I can read in the x and y dimensions > > from a file, then read in the xy elements of the data a populate a > > memory area xyelementsizeinbytes with the data. But now I want to > > access the data. Without doing pointer arithmatic, is it possible to use > > the standard [][] notation somehow? > > > > for example > > > > int data; > > x=getXDim(); > > y=getYDim(); > > data=(int )malloc(xysizeof(int)); > > readInData(x,y,data); > > printf("Middle data element is %d\n",data[y][x]); > > > > but I know that that data[y][x] will barf on the compiler because the > > compiler has no way of knowing what the y size of the "y" dimension is... > > > > Any suggestions on how to use the N-dimensional bracket notation in this > > situation? > > > > Thanks. > > > nclude #include int my; int x = 100; int y = 500; int i = 0; int j = 0; int k = 0; int main(){ my = (int )malloc(x sizeof(int)); for(; i my[i] = (int )malloc(y * sizeof(int )); } for(i = 0; i < x; i++) for(j=0; j my[i][j] = i + j; printf ("i=> %d j=> %d slot: %d ==> %d\n",i,j,k,my[i][j]); k++; printf("Hello\n"); } printf("%d", my[0][5]); return 0; } > > Yes, in fact int main() does this using char* as a parameter. > > I have a sample worked out on my laptop which I can't put on my > jobs network, but when I get home I'll post an example. > > Ruben > > > > > > -- > > This message has been scanned for viruses and > > dangerous content by MailScanner, and is > > believed to be clean. > > > > _______________________________________________ > > Discuss mailing list > > Discuss-at-blu.org > > http://lists.blu.org/mailman/listinfo/discuss > > -- > http://www.mrbrklyn.com - Interesting Stuff > http://www.nylxs.com - Leadership Development in Free Software > > So many immigrant groups have swept through our town that Brooklyn, like Atlantis, reaches mythological proportions in the mind of the world - RI Safir 1998 > > http://fairuse.nylxs.com DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002 > > "Yeah - I write Free Software...so SUE ME" > > "The tremendous problem we face is that we are becoming sharecroppers to our own cultural heritage -- we need the ability to participate in our own society." > > "> I'm an engineer. I choose the best tool for the job, politics be damned.< > You must be a stupid engineer then, because politcs and technology have been attached at the hip since the 1st dynasty in Ancient Egypt. I guess you missed that one." > > © Copyright for the Digital Millennium > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > > _______________________________________________ > Discuss mailing list > Discuss-at-blu.org > http://lists.blu.org/mailman/listinfo/discuss -- http://www.mrbrklyn.com - Interesting Stuff http://www.nylxs.com - Leadership Development in Free Software So many immigrant groups have swept through our town that Brooklyn, like Atlantis, reaches mythological proportions in the mind of the world - RI Safir 1998 http://fairuse.nylxs.com DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002 "Yeah - I write Free Software...so SUE ME" "The tremendous problem we face is that we are becoming sharecroppers to our own cultural heritage -- we need the ability to participate in our own society." "> I'm an engineer. I choose the best tool for the job, politics be damned.< You must be a stupid engineer then, because politcs and technology have been attached at the hip since the 1st dynasty in Ancient Egypt. I guess you missed that one." © Copyright for the Digital Millennium