As an Embedded C programmer, understanding pointers is very important. Given the resource constraints in embedded system, one has to ensure memory is utilized in most optimized fashion, where pointers come in handy. While using pointers programmers often come across confusion between constant pointers and point to a constant. Here is an article that describes differences between these two in a very detail oriented manner.

1. Here is the URL to download this: https://www.emertxe.com/content/osfy_dec_2014_satya_constant_pointers.pdf
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