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Dennis MacAlistair Ritchie (September 9, 1941 – c. October 12, 2011) was an American computer scientist. [3] He created the C programming language and the Unix operating system and B language with long-time colleague Ken Thompson. [3]
The cover of the book The C Programming Language, first edition, by Brian Kernighan and Dennis Ritchie. In 1978 Brian Kernighan and Dennis Ritchie published the first edition of The C Programming Language. [18] Known as K&R from the initials of its authors, the book served for many years as an informal specification of the language.
The first implemented compiler was written by Grace Hopper, who also coined the term "compiler", [6] [7] referring to her A-0 system which functioned as a loader or linker, not the modern notion of a compiler. The first Autocode and compiler in the modern sense were developed by Alick Glennie in 1952 at the University of Manchester for the Mark ...
Some programs that were part of later versions of Research Unix, such as mk and rc, were also incorporated into Plan 9. Thompson tested early versions of the C++ programming language for Bjarne Stroustrup by writing programs in it, but later refused to work in C++ due to frequent incompatibilities between versions. In a 2009 interview, Thompson ...
The first high-level language to have an associated compiler was created by Corrado Böhm in 1951, for his PhD thesis. [3] The first commercially available language was FORTRAN (FORmula TRANslation), developed in 1956 (first manual appeared in 1956, but first developed in 1954) by a team led by John Backus at IBM .
The Portable C Compiler (also known as pcc or sometimes pccm - portable C compiler machine) is an early compiler for the C programming language written by Stephen C. Johnson of Bell Labs in the mid-1970s, [1] based in part on ideas proposed by Alan Snyder in 1973, [2] [3] and "distributed as the C compiler by Bell Labs... with the blessing of Dennis Ritchie."
Hopper also developed the programming language FLOW-MATIC to program the UNIVAC. [14] Frances E. Holberton, also working at UNIVAC, developed a code [clarification needed], C-10, which let programmers use keyboard inputs and created the Sort-Merge Generator in 1951. [16] [17] Adele Mildred Koss and Hopper also created the precursor to a report ...
The C Programming Language (sometimes termed K&R, after its authors' initials) is a computer programming book written by Brian Kernighan and Dennis Ritchie, the latter of whom originally designed and implemented the C programming language, as well as co-designed the Unix operating system with which development of the language was closely intertwined.