Introduction: C Language - Overview

C is a general-purpose, high-level language that was originally developed by Dennis M. Ritchie to develop the UNIX operating system at Bell Labs. C was originally first implemented on the DEC PDP-11 computer in 1972.

In 1978, Brian Kernighan and Dennis Ritchie produced the first publicly available description of C, now known as the K&R standard. The UNIX operating system, the C compiler, and essentially all UNIX application programs have been written in C. C has now become a widely used professional language for various reasons − Easy to learnStructured languageIt produces efficient programsIt can handle low-level activitiesIt can be compiled on a variety of computer platforms

Step 1: ​Facts About C

C was invented to write an operating system called UNIX.C is a successor of B language which was introduced around the early 1970s.The language was formalized in 1988 by the American National Standard Institute (ANSI).The UNIX OS was totally written in C.Today C is the most widely used and popular System Programming Language.Most of the state-of-the-art software have been implemented using C.Today's most popular Linux OS and RDBMS MySQL have been written in C.

Step 2: ​Why Use C?

C was initially used for system development work, particularly the programs that make-up the operating system. C was adopted as a system development language because it produces code that runs nearly as fast as the code written in assembly language. Some examples of the use of C might be − Operating SystemsLanguage CompilersAssemblersText EditorsPrint SpoolersNetwork DriversModern ProgramsDatabasesLanguage InterpretersUtilities

Step 3: ​ C Programs

A C program can vary from 3 lines to millions of lines and it should be written into one or more text files with extension ".c"; for example, hello.c. You can use "vi", "vim" or any other text editor to write your C program into a file.

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