This is the first lesson of an old series I used to run back in June 2015. The original blog can be still found in

In this lesson, I’ll talk about some facts about the C programming language.

  • C was invented to create an operating system named UNIX.

  • C is the successor of CB language which was introduced around 1970.

  • The language was formalized in 1988 by the American National Standard Institute (ANSI).

  • The UNIX OS as totally written in C by 1973.

  • 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 RBDMS MySQL have been written in C.

  • C is called a middle-level programming language.