What is the design goal of C++ language?

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C++ has been widely used in various fields of computer science because of its unique language mechanism. The idea of object-oriented design is a qualitative leap based on the original structured programming method, which embodies various characteristics of object-oriented.

Bjarne Stroustrup (designer of C++) description of the design and evolution of C++ C++ (The Design and Evolution of C++)

C++ programming language is designed and implemented by Bjarne Stroustrup (the author) from AT&T Bell Laboratories. It has both the organization and design characteristics of Simula language and C language settings suitable for system programming.

C++ 's original version, called "C (C with classes) with classes" [Stroustrup,1980], was put into use * * times in 1980, when it only supported system programming (§3) and data abstraction techniques (§4.1). Language facilities supporting object-oriented programming were joined into C++ in 1983. Since then, object-oriented design methods and object-oriented programming technologies have gradually entered the field of Clippers.

In 1985, Clearing entered the commercial market [Stroustrup,1986] [Stroustrup,1986b] * times. Between 1987 and 1989, language facilities supporting paradigm programming were added to C++ [Ellis,1990] [Stroustrup,1991]. With the emergence and wide application of a number of independently developed C++ products, the formal C++ standardization work was launched in 1990. Standardization is the responsibility of ANSI (American National Standard Institute) and later added ISO (International Standards Organization).

In 1998, the international standard of C++ language was officially issued. During the progress of standardization work, the Standards Committee played an important role, and the draft C++ standard released by it was used as a transitional standard until the formal standard was released.

As an active member of the Standards Committee, I was a major participant in the further development of C++. Compared with the previous C++ language version, the standard C++ language is closer to my ideal C++ language. The design and evolution of C++ are described in detail in [Stroustrup,1994], [Stroustrup,1996] and [Stroustrup,1997b]. The C++ language definition generated at the end of the standardization work is described in detail in [Stroustrup,1997].

The design goal of C++ (C++ Design Aims)

The design goal of C++ is to make C++ not only have the adaptability and efficiency of C language suitable for system programming, but also have language facilities like Simula in its program organization structure (the kind of program organization structure supported by Simula is often called object-oriented programming style).

In the design, great efforts have been made to make the high-level programming technology borrowed from Simula can be applied to the system programming. That is to say, the abstract mechanism provided by C++ can be applied to those programming tasks that require high efficiency and adaptability.

The above design objectives of C++ can be summarized as follows:

For programmers who want to solve practical problems, C++ makes programming more fun

C++ language is a general purpose programming language, it:

◆ is a better C

◆ supports data abstraction

◆ supports object-oriented programming

◆ supports paradigm programming.

The support for paradigm programming is only achieved as a clear and independent goal in the later stage of C++ design. For most of the evolution of C++, I have placed paradigm programming and the language features that support it under the headline "data abstraction".

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