The C programming language is one of the most widely offered courses in the undergraduate programmes (all branches of BTech, BSc Computer Science, and BCA) as well as various postgraduate programmes (MCA, MSc Computer Science and others). Apart from students, the book will also be useful for aspirants of various competitive examinations and budding programmers. The book deals with the fundamentals of computers, algorithms and flowcharts, error handling, different data types, variables, operators, input/output operations, decision statements, looping, unconditional statements, functions, arrays, strings, pointers, dynamic memory management, structure and union, file and file handling, and preprocessor directives.