C history of the language

History of the language C

• 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 C:

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 :

• C89
• C99
• C11

History Table :

Language	Developed by	Year
ALGOL	International Group	1960
BPCL	Martin Richards	1967
B	Ken Thompson	1970
Traditional C	Dennis Ritchie	1972
K&R C	Brain Kernighan & Dennis Ritchie	1978
ANSI C	ANSI Committee	1989
ANSI/ISO C	ISO Committee	1990