How to come programming language C?

In 1970, C programming language is developed by BELL Labratoris Dennis.He developed C DEC PDP-11 machine in Unix Oparating System. Interesting matter that UNIX developed by programming language C.

Martin Richards develop by BCPL, which is uses Europe. After developed programming language B . B has developed , then name published C / Programming language C.
At first c uses Unix Operating system. Brian Kernighan and Dennis, they has worte a book "The C Programming Language (Englewood, Cliffs, N.J. : Prentice Hall, 1978)".This book discuss in C. This book has published and programming language C's famousity has increased.Because, One program run to any other computer.
In 1983, ANSI(American National Institute) has fixed a ideal value.With the value in C called ANSI C. All compiler (Turbo C, Microsoft C etc.) maintains ANSI rules.