Stephen Kochan is the author and coauthor of several bestselling titles on the C language, including Programming in C (Sams, 2004), Programming in ANSI C (Sams, 1994), and Topics in C Programming (Wiley, 1991), and several UNIX titles, including Exploring the Unix System (Sams, 1992) and Unix Shell Programming (Sams, 2003). He has been programming on Macintosh computers since the introduction of the first Mac in 1984, and he wrote Programming C for the Mac as part of the Apple Press Library. In 2003, Kochan wrote Programming in Objective-C (Sams, 2003), and followed that with another Mac-related title, Beginning AppleScript (Wiley, 2004).