In 1966, Christopher Strachey assembled a collection of working papers on a language called CPL (Combined Programming Language). It was never actual implemented, but was used basically to study the theory of programming languages.
             In 1969, Martin Richards took many of the concepts from CPL and produced a more efficient language called Basic CPL or BCPL to aid in writing compilers.
             Then in 1970, while working on the operating system UNIX for AT&T labs, Ken Thompson decided to write a high-level language so the operating system didn't have to be rewritten in assembly for a new computer that had been purchased. This language was heavily influenced by BCPL and by Thompson's taste for spartan syntax, and was called "B". It was used for a few years and then revised in 1972 by Dennis Ritchie and renamed "C". All the programs later released with UNIX were also written in C, and the operating system came with a built-in C compiler. This widespread availability combined with a rich set of operator sand efficient access to the computer hardware made C extremely popular.
             In the years that followed, thousands of people wrote code in C, which has proven to be versatile, terse, and relatively low-level; is adequate for most systems programming tasks (like writing an operating system or cutting-edge computer game), and runs everywhere and on everything.
             However, in 1980, Bjarne Stroustrop, also of AT&T Labs, wanted to write some major event-driven simulation projects. An object-oriented programming language of the time, Simula67, would have been ideal, but was not efficient enough to meet the programming requirements of the simulations. Thus Stroustrop extended C into "C with Classes". Later, Stroustrop added more features, and the resulting language became known as C++.
             Afterward, Stroustrop further refined C++, tweaking the syntax slightly to make it more compatible with C and by adding a slew of features, which facilitate the develo
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