Language C
C is a programming language originally developed by Dennis
Ritchie between 1969 and 1972 at Bell Labs, 1 as an evolution
of the previous B language, in turn based on BCPL. Like B, it is a
language oriented to the implementation of operating systems,
specifically Unix. C is appreciated for the efficiency of the code
it produces and is the most popular programming language for
creating systems software, although it is also used to create
applications.
Ken Thompson (left) with Dennis
Ritchie (right, the inventor of the C
programming language)