Pointers and Arrays - MS 2010

[Gandalph]

Greetings.
I am trying (and failing miserably ) to set up a pointer to a two dimensional array of floats or doubles. I can set up the array and acces it quite sucessfully, but to pass the array to a function I need a pointer (other than the original array name).
Every time I try what appears a logical declaration (utilising * and &) I get an error message of the form "A value of type "float(*)[3][3]" cannot be assignet to an entity of type "float*

I am using Microsoft Visual Studio 2010 and developing a programme for Windows.

Help please before any more hair hits the floor !

Thanks in anticipation of your help
Gandalph.

[exomo]

Pointers to multidimensional arrays are a little confusing.
You might want to look at http://www.eskimo.com/~scs/cclass/int/sx9a.html they explain quite good how you can pass multidimensional arrays.
Basically if you want a pointer to your array it looks like this:

Code: Select all

float arr[3][3] = { {1,2,3},{4,5,6}, {7,8,9}};
    float (*a)[3] = arr;

The best way to use multidimensional arrays is to not use them If possible use std::vector. Or you can use a single dimension array of size m*n (when m and n are the sizes od your two array dimensions).

[Gandalph]

Greetings from the UK.

Many thanks for your help - problem solved and hair remaining in head !!
The web referance you gave as also a good site for the exlpanation of this area.

Gandalph.