Guide to proper code tagging using pictures.
 

You have a problem with your code. You need help. You are in a hurry. What can you do?
Post for help at Daniweb as fast as you write, correct?. Wrong.
The first thing you should do is to read the rules on posting and specially how to properly
make use of code tags for easy reading.
As the statistic will show, chances are that you will not do that. That's when the regulars around here will get on your case and will harass you about how you should use the proper code tags.
The following is a sequential set of pictures of how I post code.
From left to right, top to bottom.

1. Give code an easy reading format in editor.
2. Copy and paste from editor to the posting editor.
3. This is how it would look if nothing else its done to it.
4. Select the code portion and click the # icon on top of posting window.
5. Modify the [code] brackets shown at beginning of code to something like [code=C]
6. How the code should be. Click in Prieview Post, bottom left, to make sure.

Give it a proper indicative title base on your code problem, and submit New Thread
You'll see that help will arrive much faster than you thought.
Of course, that depends how well you can explain what your problem is. But that's another painfull subject beyond the scope of this guide.

programming of led dot matrix
 

pls i need a guildline on how to program led dot matrix with c language