A problem in learning a new programming language is the detail that needs to be understood before a program can be written. This book studies a simple C program, to familiarize the reader with high-level language. The book is organized so that readers follow the text by trying out program examples as they are introduced, therefore encouraging a growing awareness in the topic. Features of the text are a tutorial, self-study style, information on the most commonly used commercial debuggers and conversion from other languages to C. It is aimed at undergraduates of software engineering and computing degrees.