Self Study Modules

Null dereference
File Links: pointers-1-NULL-dereference.mp4 pointers-2-stack-diagrams.mp4
Maybe one of the first things to learn about pointers; do not dereference NULL pointers. However, it is a good idea to understand why it is a bad idea.

Legal dereference
File Links: pointers-3-legal-dereference.mp4 pointers-4-stack-diagrams.mp4
Just to provide the analogue of the previous video for situations where dereferencing of a pointer is fine.

Return values errors
File Links: pointers-5-errors-handling.mp4
Anytime a standard library function is invoked, it might not be able to successfully perform its work. Malloc is no exception & will return NULL if it was unable to allocate memory on your behalf. It is therefore important to always verify the return value of malloc before assuming the pointer is usable.

Pointers / Handy Arrays Library