Pascal
Pascal is a high-level programming language developed by Niklaus Wirth in the late 1960s. The language is named after Blaise Pascal, a seventeenth-century French mathematician who constructed one of the first mechanical adding machines.
History
The Pascal programming language was created in 1968-1969 and published in 1970 by Niklaus Wirth, a member of the International Federation of Information Processing (IFIP) Working Group 2.1. The language was named in honor of Blaise Pascal, a French mathematician who made significant contributions to the fields of geometry, physics, and computer science.
Design
Pascal was designed to encourage good programming practices using structured programming and data structuring. It is a statically typed language, which means that the type of a variable is known at compile time. This is in contrast to dynamically typed languages, where the type is checked at runtime.
Syntax
Pascal's syntax is based on the ALGOL programming language. It uses English keywords such as 'begin', 'end', 'if', 'then', 'else', 'while', 'do', 'not', 'or', and 'and'. It also uses semicolons to separate statements, and periods to end a program.
Features
Pascal supports a number of features that make it a powerful and flexible language. These include strong typing, automatic garbage collection, and support for object-oriented programming.
Implementations
There have been many implementations of Pascal, including Turbo Pascal, Free Pascal, and Delphi. These implementations have added many extensions to the original language, including support for graphics, sound, and complex data structures.
Legacy
Despite its age, Pascal remains a popular teaching language in universities and schools around the world. It has also influenced many other programming languages, including Modula-2, Ada, and Python.
See also
References
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External links
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