We discuss only text files in CIS 071. The material related to this Lecture Set is currently contained in the Reference Document A Brief Introduction to Text Files.
In addition, there are two files of C code (Read from External File; Read from Keyboard) prepared by Mr. Walowitz and also accessible from his website. The files relate to Lab10 and will make your job of completing the lab a lot easier. You can get to these files by clicking on the Laboratories section (Section 4) of the Table of Contents, and then clicking on either of the Program files under Lab10.