Brian Wilson Kernighan (; born 1942 ) is a Canadian computer scientist who worked at Bell Labs alongside Unix creators Ken Thompson and Dennis Ritchie and contributed to the development of Unix.

* Video-TechNetCast At Bell Labs: Dennis Ritchie and Brian Kernighan ( 1999-05-14 )

Before there was an official standard for C, many users and implementors relied on an informal specification contained in a book by Ritchie and Brian Kernighan ; that version is generally referred to as " K & R " C. In 1989 the American National Standards Institute published a standard for C ( generally called " ANSI C " or " C89 ").

* K & R ( Kernighan and Ritchie ), referring to the two programmers who wrote The C Programming Language

Dennis M. Ritchie, Ken Thompson and Brian W. Kernighan wrote the QED manuals used at Bell Labs.

* Brian W. Kernighan and Dennis Ritchie, The C Programming Language, ISBN 0-13-110362-8

Kernighan and Ritchie, or K & R, may refer to:

* Brian Kernighan and Dennis Ritchie, computer scientists

* The C Programming Language ( book ), written by Kernighan and Ritchie

The C Programming Language, second edition, by Brian Kernighan and Dennis Ritchie, widely regarded to be the authoritative reference on C ( programming language ) | C.

The C Programming Language ( sometimes referred to as K & R, after its authors ' initials ) is a well-known programming book written by Brian Kernighan and Dennis Ritchie, the latter of whom originally designed and implemented the language, as well as co-designed the Unix operating system with which development of the language was closely intertwined.

* The C Programming Language ( book ), by Brian Kernighan and Dennis Ritchie

m4 is a general purpose macro processor designed by Brian Kernighan and Dennis Ritchie.

* Brian Kernighan, co-author of the first book on the C programming language with Dennis Ritchie, coauthor of the AWK and AMPL programming languages.

The C documented is the language of Brian W. Kernighan and Dennis M. Ritchie, as standardized in 1989.

Ratfor provides the following kinds of flow-control statements, described by Kernighan and Plauger as " shamelessly stolen from the language C, developed for the UNIX operating system by D. M.

It was developed by Robert Fourer, David Gay and Brian Kernighan at Bell Laboratories.

*" Leap In and Try Things "-Interview with Brian Kernighan – on " Harmony at Work Blog ", October 2009.

So, Brian Kernighan took on the task of rewriting troff.

At that time, SoftQuad took over the maintenance, although Brian Kernighan continued to improve troff on his own.

These methods ( sometimes called Lin – Kernighan – Johnson ) build on the Lin – Kernighan method, adding ideas from tabu search and evolutionary computing.

For many years Lin – Kernighan – Johnson had identified optimal solutions for all TSPs where an optimal solution was known and had identified the best known solutions for all other TSPs on which the method had been tried.

The following is an interesting quote from An Interview with Brian Kernighan when he was asked " What hooked you on programming?

It is based on the original Ratfor by B. Kernighan and P. J. Plauger, with rewrites and enhancements by David Hanson and friends ( U. of Arizona ), Joe Sventek and Debbie Scherrer ( Lawrence Berkeley National Laboratory ).

* Brian Kernighan He coined the ubiquitous example program " hello, world ", and co-authored the first book on C ( programming language ); also known as a coiner of the expression " What You See Is All You Get ( WYSIAYG )".

Brian Kernighan is currently a Professor at the Computer Science Department of Princeton University, where he is also the Undergraduate Department Representative.

( In a display of authorial equity, the former is usually called the Kernighan – Lin algorithm, while the latter is styled Lin – Kernighan.

Kernighan was the software editor for Prentice Hall International.

Kernighan coined the term Unix in the 1970s.

Born in Toronto, Kernighan attended the University of Toronto between 1960 and 1964, earning his Bachelor's degree in Engineering Physics.

* Transcript of an interview with Brian Kernighan – Interview by Michael S. Mahoney

* Video interview with Brian Kernighan for Princeton Startup TV ( 03. 20. 2012 )

de: Brian W. Kernighan

; Pairwise exchange, or Lin – Kernighan heuristics: The pairwise exchange or 2-opt technique involves iteratively removing two edges and replacing these with two different edges that reconnect the fragments created by edge removal into a new and shorter tour.

Note that the label Lin – Kernighan is an often heard misnomer for 2-opt.

Lin – Kernighan is actually a more general method.

Shen Lin and Brian Kernighan first published their method in 1972, and it was the most reliable heuristic for solving travelling salesman problems for nearly two decades.

The basic Lin – Kernighan technique gives results that are guaranteed to be at least 3-opt.

In computing, C (, like the letter C ) is a general-purpose programming language initially developed by Dennis Ritchie between 1969 and 1973 at Bell Labs.

When thinking of design ideas with famed pinball designer Steve Ritchie, they developed the concept for Defender — a side-scroller with the player flying over the surface of a planet.

* C, an early systems programming language, was developed by Dennis Ritchie and Ken Thompson at Bell Labs between 1969 and 1973.