Set Data Structure in C

In this article I will show how to implement a Set data structure in C using a hashtable, and discuss complexity, trade-offs, and possible improvements. Prerequisites: Basic knowledge of programming (logic, etc); C syntax, allocating variables; Memory management in C: pointers, malloc, free; Basic understanding of hashing; What is a Set? A data structure that stores unique elements . Same idea as in set theory in mathematics: no repeated values are allowed . Why use a Hashtable? A hashtable is a