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Introduction to C

We can say that C is a general purpose language which was developed in 1970 s by Dennis.M.Richie. Its development was done in conjunction with UNIX operating system at Bell Labs. It was first implemented on the DEC PDP-11 computer in 1972.

There are various languages that are written in C like UNIX Operating system, the C compiler and all essential UNIX applications.

C language is used professionally because of its importance as it is :

  • Easy to learn
  • Language is in structured form
  • Produces efficient programs
  • Low-level activities are handled
  • Computer platforms can be compiled through it
Facts about C:
  • In order to write UNIX operating system C language was developed
  • Around 1970 B language was introduced which was successor of C language.
  • American National Standard Institute (ANSI) formalized the language in 1988.
  • In 1973 UNIX language was written in C.
  • C is one of the most widely and popular used language.
  • Using C language various state of the art softwares have been implemented.
  • Using C language now a days popular Linux OS and RDBMS MS-SQL have been written.
Why to Use C:

Initially for system development we used to use C language , especially for the programs that make up the Operating System. Some examples of C language are:

  • Network Drivers
  • Utilities
  • Language Compilers
  • Assemblers
  • Text Editors
  • Print Spoolers
  • Databases
  • Modern Programs
  • Operating Systems
  • Language Interpreters
C Program:

  • C program can be written in many lines varying from 3 to millions.
  • It can be written into one or more text files with extension .c, for ex: helloTutOn.c

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