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C++
Tutorials >
Introduction to C++
>
Evolution
and
History Of C++ |
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Bjarne Stroustrup |
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During 1983-1985, C++ was written by
Bjarne Stroustrup at Bell Labs. C++ is
an extension of C. Before 1983, Bjarne
Stroustrup added some features to C
and he called "C with Classes". He had
combined the Simula's classes and
object-oriented features with the
power and efficiency of C. The term
C++ was first used in 1983.
After first release, C++ was developed
significantly. In particular, "ARM
C++" added exceptions and templates,
and ISO C++ added RTTI, namespaces,
and a standard library.
C++ was designed for the UNIX system
environment. Programmers could improve
the quality of code they produced and
reusable code was easier to write with
C++.
Prior to joining Bell Labs, Bjarne
Stroustrup had studied in the doctoral
program at the Computing Laboratory at
Cambridge University. Now, Bell Labs
no longer has that name since part of
Bell Labs became AT&T Labs. The other
half became Lucent Bell labs. |
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Bjarne Stroustrup |
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C Programming
Language and Algol68's Inspiration |
Prior to C++, C was a programming
language developed at Bell Labs circa
1969-1973. The UNIX operating system
was also being developed at Bell Labs
at the same time. C was originally
developed for and implemented on the
UNIX operating system, on a PDP-11
computer by Dennis Ritchie. He
extended the B language by adding
types in 1971. He called this NB for
New B. Ritchie credited some of his
inspiration from theAlgol68 language.
Ritchie restructured the language and
rewrote the compiler and gave his new
language the name "C" in 1972. 90% of
UNIX was then written in C. The
committee that wrote the 1989 ANSI
Standard for C had started work on the
C Standard project in 1983 after
having been established by ANSI in
that year. There were quite a number
of versions of C at that time and a
new Standard was necessary.
C is portable, not tied to any
particular hardware or operating
system. C combines the elements of
high-level languages with the
functionality of assembly language and
has occasionally been referred to as a
middle-level computer language. C
makes it easy to adapt software for
one type of computer to another. |
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