Some things just naturally fit together. Such is the case for C and UNIX: these software tools have been developed in tandem -- C is an excellent programming language, UNIX is an excellent operating system. They work well together and many software developers choose to take advantage of the symbiotic relationship between C and UNIX. In this book the essential features of C and UNIX are introduced, and readers are shown how to write more powerful and more efficient programs. The book is divided into four parts: Basic Program Syntax and Control, Program Design and Control of Input/Output, Data Structure Design and Management, and Advanced Features of C and UNIX.