If you're declaring a multi-dimensional array (as opposed to a jagged array), then you could do something like this: double[,,] matrix = new double[3,3,3]; for (int i = 0; i < 3; i++) for (int j = 0; j < 3; j++) for (int k = 0; k < 3; k++) matrix[i, j, k] = i * j * k; // Or whatever A jagged array wouldn't be a whole lot different, but you'd declare it as double[][][] and reference elements as matrix[i][j][k]. A multi-dimensional array is recommended in this case. You can read more information about the difference by reading about Arrays[^] in the C# Language Specification. Microsoft MVP, Visual C# My Articles

Also, there is a pretty good article and matrix class here on CodeProject that may be of some use: http://www.codeproject.com/csharp/PsDotNetMatrix.asp[^]. Microsoft MVP, Visual C# My Articles

Try building the flowchart for the problem first, like what will be the input, output and what logic you will apply to solve it. Things will be clear once you do that. God is Real, unless declared Integer.

Are you taking about a 3x3 matrix or a matrix of type 3x3x3? For that later you wuold have to approach the process through the Gram-Schmit Orthonormalization method. A google search reveals various articles on how to work with matrices of three dimensions.

Have a look at Windows GDI instead. You'll be most interested in the DrawLine function, I expect. If you're on a suitably recent version of Windows, GDI+ (or System.Drawing in .NET) might be more suitable. GDI: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winprog/winprog/graphics_device_interface.asp[^] GDI+: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdicpp/GDIPlus/GDIPlus.asp Ian Darling "If we've learned anything from history, it's that those who feed trolls are condemned to repetitive conversations. Or something like that." - Eric Lippert

This is C**#** forum not C forum. Post this in VC++ forum. Mazy "One who dives deep gets the pearls,the burning desire for realization brings the goal nearer." - Babuji