What is Pointers ?

Using pointers is a bit like riding a bicycle. Just when you think that you'll never understand them—suddenly you do! Once learned the trick is hard to forget. There's no real magic to pointers, and a lot of readers will already be familiar with their use. The only peculiarity of C is how heavily it relies on the use of pointers, compared with other languages, and the relatively permissive view of what you can do with them.