Tony Gaddis is the principal author of the Starting Out With series of textbooks. Tony has nearly 20 years experience teaching computer science courses at Haywood Community College in North Carolina. He is a highly acclaimed instructor who was previously selected as the North Carolina Community College Teacher of the Year and has received the Teaching Excellence award from the National Institute for Staff and Organizational Development. The Starting Out With series includes introductory books using the C++ programming language, the Java™ programming language, Microsoft® Visual Basic®, Microsoft® C#®, Python, Programming Logic and Design, MIT App Inventor, and Alice, all published by Pearson.   Godfrey Muganda is Professor of Computer Science at North Central College. He teaches a wide variety of courses at the undergraduate and graduate levels including courses in Linux and Unix programming, Windows and .NET programming, web application Development, web services, data structures, and algorithms. He is a past winner of the North Central College faculty award for outstanding scholarship. His primary research interests are in the area of fuzzy sets and systems.