From help-request at octave dot org Fri Feb  3 04:20:41 2006
Subject: Re: How to write a c++ application using cygwin?
From: Stefan van der Walt <stefan at sun dot ac dot za>
To: help at octave dot org
Date: Fri, 3 Feb 2006 12:16:34 +0200


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On Fri, Feb 03, 2006 at 09:13:29AM +0100, Hermann Schloss wrote:
> The question now is, how can I create an application (for example see below)
> using octave under cygwin?
>  
> #include <iostream>
> #inlcude <octave/config.h>
> #include <octave/Matrix>
>  
> using namespace std;
>  
> int main()
> {
>             Matrix m = (3,2);
>             // filling the matrix
>             Matrix n = m.inverse();
>             cout   << n;
>             return 0;
> }

You should modify your program to include Matrix.h instead.  Also, you
cannot invert a 3x2 matrix.  A matrix is initialised by doing

Matrix m = Matrix(3,2,0);

or

Matrix m(3,2,0);

(You can also do Matrix m(3,2); but then you need to make sure that you manually initialise *all* the values).

Your code can be compiled using something similar to

$ mkoctfile --link-stand-alone -v testoctave.cc -o testoctave

Regards
Stéfan

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#include <iostream>
#include <octave/config.h>
#include <octave/Matrix.h>

using namespace std;

int main()
{
    Matrix m(3,3,0);
    // filling the matrix
    Matrix n = m.inverse();
    cout   << n;
    return 0;
}

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