Quote Originally Posted by cooper1200 View Post
thanks for that.

i think i saw on another thread the other day that you used to teach this. Please could you recommend a good book on pointers
There is no one book on pointers. I recommend 3 different books on the C Programming language that would give you the information you need on pointers along with all the other details on the language.

You need to study one of the following books on the C Programming Language, cover to cover, and do all the exercises at the end of each chapter!

C Programming, A Modern Approach, 2nd Edition
Author: K. N. King

C Primer Plus, 6th Edition
Stephen Prata

C How to Program, 8/e
Deitel & Deitel

Studying one of these books, and writing code, you will have a much better understanding of the entire C Programming language, not just pointers.