The C Programming Language

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Chapter 1The C ProgrammingLanguageIn this chapter we will learn how to write simple computer programs using the C Programming Language ; perform basic mathematical calculations; manage data stored in the computer memory and disk; generate meaningful output on the screen or into a computer C Programming Language was developed in the early 1970 sby Ken Thomp-son and Dennis Ritchie at the Bell Telephone Laboratories. It was designed andimplemented in parallel with the operating system Unix and was aimed mostly asa system implementation Language [1]. It, nevertheless, evolved into one of the mostflexible and widely used computer Programming languages 1989, the American National Standards Institute (ANSI) adopted a documentthat standardized the C Language . The particular version ofthe Language that itdescribes is widely referred to asANSI CorC89.

1-2 CHAPTER 1. THE C PROGRAMMING LANGUAGE Figure 1.1: The developers of the C programming language, Ken Thompson (sitting) and Dennis Ritchie, in front of a PDP-11/20 computer at the Bell Labs, in 1972 (Scientific American, March

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