About the data structure using c data structure is a logical organization of a set of data items that collectively describe an object. The data, belonging to a problem, must be organized for the basic reasons such as suitable representation, ease of retrieval, operations allowed, along with many other functions and characteristics. To sustain in this competitive global village, one needs to be updated regarding the computer systems and data structures, so that one can make systematic efforts to improve and upgrade his/her knowledge and skills. This book provides a brief insight into data structures using 'c to help the current and future students, engineers at all levels to work efficiently for an effective output in the organizations. The discussion includes the introduction to data structures along with discussion on various aspects like arrays, pointers, linked lists, queues, stacks, recursion, trees, graphs, sorting, searching, hashing, file structures and advanced data struc