C Programming - Chapter 4 - Functions and Program Structure

Chapter Four of C Programming by Brian W. Kernighan and Dennis M. Ritchie. In this chapter we cover functions and program structure in C.  For more detail see https://www.cc4e.com and https://online.dr-chuck.com/ This material is used under "fair use" so we can interpret this historical and scholarly work and place it in the context of the history of computing.