Article View: hepnet.lang.c++
Article #8Re: dynamicaly allocating a two dim. array
From: Dietmar Kuehl
Date: Tue, 31 Oct 1995 13:20
Date: Tue, 31 Oct 1995 13:20
43 lines
1686 bytes
1686 bytes
Jarmo Paavilainen (skorpio@dataphone.se) wrote:
: In message <46d9ak$c5h@ixnews7.ix.netcom.com> - techman2@ix.netcom.com (Peter
: Dennis ) writes:
:
: :> float array[x][y];
:
: First C++ version
C version using C++'s new:
:
: float **array;
:
: array = new float*[x];
: for(i = 0;i < x;i++)
: { array[i] = new float[y]; }
Real C++ version:
vector<vector<float> > array(x, vector<float>(y));
: and then C
:
: float **array;
:
: array = (float**)malloc(sizeof(float)*x);
: for(i = 0;i < x;i++)
: { array[i] = (float*)malloc(sizeof(float)*y); }
:
: Code not tested but it should work ( the C++ version anyway ).
:
:
: Take care,
: Skorpio
:
: ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÑÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͻ
: ºJarmo Paavilainen ( alias : Skorpio ) ³e-mail : skorpio@dataphone.se º
: ºSweden ³home : ? º
: ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÏÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ
:
--
dietmar.kuehl@uni-konstanz.de
http://www.informatik.uni-konstanz.de/~kuehl
I am a realistic optimist - that's why I appear to be slightly pessimistic
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Path: arc1-ca.pugleaf.net!news.uni-konstanz.de!uzwil!kuehl From: kuehl@uzwil (Dietmar Kuehl) Newsgroups: hepnet.lang.c++,comp.lang.c,comp.lang.c++,cern.c++ Subject: Re: dynamicaly allocating a two dim. array Date: 31 Oct 1995 13:20:52 GMT Organization: Fakultät für Mathematik und Informatik Distribution: world Message-ID: <4757rk$cq6@eurybia.rz.uni-konstanz.de> References: <474ljk$551@nic.dataphone.se> Reply-To: dietmar.kuehl@uni-konstanz.de NNTP-Posting-Host: uzwil.informatik.uni-konstanz.de X-Newsreader: TIN [version 1.1 PL6]