Hash tables are one of the most useful data structures. Their quick and scalable insert, search and delete make them relevant to a large number of computer science problems. Understanding of how a fundamental data structure works under the hood. Deeper knowledge of when to use hash tables, when not to use them, and how they can fail. Exposure to new C code. The language doesn't come with one included. It is a low-level language, so you get deeper exposure to how things work at a machine level...