WHAT IS C: Quick Guide to C Programming explores all concepts of C programming with `to the point' description. The readers do not need to have any prior knowledge of programming. C is a programming language for developing application software for computers as well as embedded systems. Many programming languages evolved after C have adopted its syntax and its ability to interact with the hardware. Thus, C has become a lingua franca of educators, students, system programming, and software professionals. This book will be helpful for students, educators and those who want to have a quick reference to any concept of C language.