Category:Pascal: Difference between revisions
The different Pascal versions
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{{language|Pascal}}'''Pascal''' is an imperative computer programming language, developed in 1970 by Niklaus Wirth as a language particularly suitable for structured programming. A derivative known as [[Object Pascal]] was designed for [[object-oriented language|object oriented programming]]. Pascal can be used very easily in conjunction with fundamental [http://en.wikipedia.org/wiki/Discrete_mathematics discrete mathematics] as sets are built into the language.
Actually there are several versions of Pascal. The most important ones are:
* Standard Pascal (ISO 7185) is the original Pascal standard. However, there are many features missing from that language version, which has led to a wide variety of nonstandard extensions. On the other hand, there are features of Standard Pascal which are seldom implemented by Pascal compilers. A compiler which implements all features of Standard Pascal is [[GNU Pascal]].
* Extended Pascal (ISO 10206) is a later Pascal standard which adds a lot to the original Pascal standard. However, compilers implementing Extended Pascal are even more rare than those implementing Standard Pascal. [[GNU Pascal]] implements most of Extended Pascal as well.
* [[Turbo Pascal]] was a very successful Pascal implementation for DOS and 16 bit Windows (the latest version was sold under the name "Borland Pascal 7.0") and became the de-facto standard for Pascal on DOS. Even today many Pascal compilers provide compatibility to Turbo Pascal.
* [[Object Pascal]] is the Pascal dialect used in [[Delphi]], Borland's successor product to Turbo/Borland Pascal. It extends Pascal with a new object model (in addition to the object model introduced in Turbo Pascal 5.5). This language is also implemented by [[Free Pascal]].
==Citations==
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