Queue Data Structure with Linked List in C

How to implement a queue data structure in C using a linked list as the underlying data structure, including a library of functions that implement the operations enqueue, dequeue, peek, size and is empty.

Source code: https://github.com/portfoliocourses/c-example-code/blob/main/queue_linked_list.c.

See the Wikipedia article on Queue data structures: https://en.wikipedia.org/wiki/Queue_(abstract_data_type).

Also see these videos on concepts used in this video...

Introduction To Pointers: https://www.youtube.com/watch?v=2GDiXG5RfNE

Dynamic Memory Allocation: https://www.youtube.com/watch?v=R0qIYWo8igs

Struct Basics: https://www.youtube.com/watch?v=dqa0KMSMx2w

Typedef Basics: https://www.youtube.com/watch?v=dTFpT-zuG0Q

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