C Programming is an ANSI / ISO standard and powerful programming language for developing real time applications. C is most widely used programming language even today. All other programming languages were derived directly or indirectly from C programming concepts. This tutorial explains all basic concepts in C like data types, keywords, constants, variables, operators, expressions, control statements, array, string, library functions etc. This book was developed specifically for freshmen students taking up their first course in programming, but people who are interested in learning C are also welcome to study it. Its aim is to supplement classroom lectures by focusing on C programming.