The product is a revised edition of the book “Programming In C” by Stephen G. Kochan. Published in 1988 by Hayden Books, this textbook focuses on the C programming language and is written in English. The paperback format makes it convenient for students and professionals to study and reference while learning about programming in the C language. With a subject area of computers and a country of origin in the United States, this book serves as a valuable resource for those looking to expand their knowledge and skills in the field of programming.