Programming techniques and use of “c” language is intensely used by students, researchers and scientists. It introduces “c” to novices as well as software engineers. This language has its own importance. This books aims at exploring the techniques that can be used for all types of programmers. Book is for the programmers who wish to know all about C. Book has been written in such a way that even a beginner can pick up the techniques easily. It clearly explains the syntax and features of “c” language and helps user to write useful, complex, multifunctional applications and utilities. The concepts of programming are illustrated with many examples. All programs can be executed on any platform. They are simple, educational and conceptual. All the programs are tested with C compiles on MS-DOS and Window operating system.