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Adding classes to the C language: An exercise in language evolution
Author(s) -
Stroustrup Bjarne
Publication year - 1983
Publication title -
software: practice and experience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 70
eISSN - 1097-024X
pISSN - 0038-0644
DOI - 10.1002/spe.4380130205
Subject(s) - compiler , simplicity , class (philosophy) , computer science , abstraction , programming language , structuring , software engineering , artificial intelligence , philosophy , epistemology , finance , economics
The C language is a fine tool for writing compact and efficient programs. It is relatively easy to produce good compilers for, and the number of tools available for supporting program‐ ming in C is large, especially in its ‘home environment’, the UNM system. However, C'S facilities for structuring programs were, until recently, rather limited. To remedy this situation, a data abstraction facility, called classes, was added. The class concept described here has benefitted from the experience gained through a year's use. It is now in use at close to a hundred installations. The guiding principles of the design of C classes were simplicity both in concept and in implementation. Smooth blending of the new facilities into the existing C programming environment was considered essential. Classes can be used without sacrificing the run‐time efficiency expected from C. This paper presents some of the reasons why C classes are what they are.