- Developed by Dennis Ritchie in 1973 .
- The PDP-11 version of UNIX was written in assembly language.
- Assembly language are hard to write and understand. So, developers of UNIX OS decided to rewrite UNIX in B language. But B language was insufficient to write UNIX, this led to the development of C language.
- K&R C – is defined as the first edition of C Language by Brian Kernhigan and Dennis Ritchie, published in 1978.
ANSI is a US standards body that released the first standard specification for C in 1989. The standard was adopted by ISO in 1990 and ISO are now the standards body for the language – not ANSI.
ANSI C just refers to a particular standard for C Language.
Standard of C :
History Table :
|Traditional C||Dennis Ritchie||1972|
|K&R C||Brain Kernighan & Dennis Ritchie||1978|
|ANSI C||ANSI Committee||1989|
|ANSI/ISO C||ISO Committee||1990|