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Pascal (Language): Pascal Programming
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Developed in 1970, by Niklaus Wirth, Pascal is a computer programming language. Pascal is an imperative language that is considered a viable option for structured programming. The language’s original purpose was to help in teaching structured programming concepts to college students. In fact, teachers have employed it as an introductory programming language for many years. Though it was created decades ago, versions of the language are still in use today, in educational and software development sectors.
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Compared with Pascal, BASIC is much less structured, which makes writing a BASIC program easy but makes reading and understanding large BASIC programs much more difficult. Pascal is more structured and forces you to plan your program before you write, as you do if you first plan a trip before leaving home. This planning may take longer, but your program and your trip will be more organized than if you rush into writing the program right away, which can be as disorganized as showing up in Paris in the middle of the night with no hotel reservations. On the other hand, BASIC enables you to start writing your program right away, which is more likely to lead to a more disorganized program.
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The HP Pascal compiler accepts programs that comply with two standards and a subset of programs that comply with a third. HP Pascal ... provides features (called extensions) that are not part of any standard. For portable code, limit your use of these extensions or isolate the extensions in separate modules.
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Pascal surpassed Mr. Wirth’s original goals. It gained commercial recognition that actually exceeded the interest of those involved in education. The computer programming language experienced a high level of popularity in the 1970s, meeting system and application software needs. It was implemented on over 80 computer systems by the time the 1970s came to a close.
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UCSD Pascal, under Professor Kenneth Bowles, was based on the Pascal-P2 kit, and consequently shared several of the Pascal-P language restrictions. UCSD Pascal was later adopted as Apple Pascal, and continued through several versions there.
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This Pascal compiler is "targeted at SMID instruction sets such as the MMX and the AMD 3D Now!" It ... performs optimizations such as parallel vector operations, loop unrolling and common sub-expression elimination. Binaries are available for Windows and Linux. The source code is also available.
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Pascal Programming