The basic textbook introduces the student to one of the most popular programming language C. It allows the student to write simple programs in C language to solve the problems. The book introduces simple linear and non-linear Data Structures such as lists, stacks, queues, trees, graphs, searching and sorting. Every program listing is explained, line by line so that a student can have a thorough understanding of the concepts, as well as the resulting outputs from each program. SALIENT FEATURES IN THIS NEW EDITION and Several changes are made in this edition and much emphasis is laid on simple explanations of Programming Concepts. and Exhaustive explanations are included with suitable pedagogical examples to make the readers to understand the basic concepts. and Preliminary chapters of earlier edition have been further expanded with more material and examples for easy understanding.