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Procedural programming

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The document discusses the history and evolution of programming languages from the 1940s to present. It notes that early languages provided little abstraction from computer hardware, but that over time languages increasingly abstracted complexity and improved developer productivity. The document outlines the development of assembly languages, third generation languages like FORTRAN, and more modern paradigms like object-oriented programming. It also discusses influential ideas like structured programming and the "GOTO controversy" that aimed to improve programming practices.

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Engine Anbarasan Gangadaran Sivakumar Venkatraman @anabarasan, @sivaacbe

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What’s Next >>>>>

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Procedural programming

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 Ada Lovelace mathematician in mid-1800’s.  Languages provided no abstraction from the computer hardware.  1940’s - general-purpose computers  Machine Language  First Generation  Assembly Language  Second Generation

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 Ancestors of Today’s Languages.  Abstracted away the underlying complexities of hardware environment.  1950’s - Fortran, COBOL  Third Generation Languages

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 1960’s – 1970’s  Increase the level of Abstraction  Make programs easier to develop and maintain.  Language Enhancements  Programming Paradigms  The GOTO Controversy. Paradigms>>>> GOTO >>>>

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 1990’s – increased developer productivity.  Memory Leaks, portability  JVM & CLR  Frameworks

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Procedural programming

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 Formula Translation (FORTRAN) in 1954 led to...  Over 2000 languages.  How many languages in use today?  Difficult to say  Legacy Software(using outdated languages) is everywhere.  Why can’t we just use one language?

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 Everyone knows it in one form or another.  Loops & Conditions.  Design Patterns.  APIs  How many of your friends know something called Rule Engine?

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 Can get real Complex.  Tower of Babel. The End

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 It is just a small piece of software in the big picture.  MAYBE (fuzzy logic)  An = 4an-1-3 (recursive rules)  No Standards  New Learning.  Difficult to Test.

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<<<<Back

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 Considered Harmful  Led to the concept of Structured Programing  Idea: Code is clearer if we restrict to a few control structures.  Loops have single entry, single exit <<<<<<Back

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 Procedural programing  Logic Programing  Program can be broken into  Based on use of declarative procedures (or subroutines or statements in the language of functions) mathematical logic.  Examples:  Examples:Prolog Fortran, Algol, Cobol, C, Pas cal  Object-oriented programing  Program is seen as a group of cooperating objects  Ideas: encapsulation, inheritance  Examples:C++, C#, Java, Pyt <<<<Back hon

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 http://techdistrict.kirkk.com/2009/06/17/the-new-era-of-programming-languages/  http://hopl.murdoch.edu.au/  http://www.cs.cornell.edu/Courses/cs212/2008sp/Lectures/Week%206/Week%2006%20- %20Programming%20Languages%20%20.pdf  http://en.wikipedia.org/wiki/Considered_harmful  http://www.stevemcconnell.com/ccgoto.htm

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@anabarasan, @sivaacbe anbarasan@orangescape.com sivakumar@orangescape.com

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Procedural programming

  • 1. Engine Anbarasan Gangadaran Sivakumar Venkatraman @anabarasan, @sivaacbe
  • 4.  Ada Lovelace mathematician in mid-1800’s.  Languages provided no abstraction from the computer hardware.  1940’s - general-purpose computers  Machine Language  First Generation  Assembly Language  Second Generation
  • 5.  Ancestors of Today’s Languages.  Abstracted away the underlying complexities of hardware environment.  1950’s - Fortran, COBOL  Third Generation Languages
  • 6.  1960’s – 1970’s  Increase the level of Abstraction  Make programs easier to develop and maintain.  Language Enhancements  Programming Paradigms  The GOTO Controversy. Paradigms>>>> GOTO >>>>
  • 7.  1990’s – increased developer productivity.  Memory Leaks, portability  JVM & CLR  Frameworks
  • 9.  Formula Translation (FORTRAN) in 1954 led to...  Over 2000 languages.  How many languages in use today?  Difficult to say  Legacy Software(using outdated languages) is everywhere.  Why can’t we just use one language?
  • 10.  Everyone knows it in one form or another.  Loops & Conditions.  Design Patterns.  APIs  How many of your friends know something called Rule Engine?
  • 11.  Can get real Complex.  Tower of Babel. The End
  • 12.  It is just a small piece of software in the big picture.  MAYBE (fuzzy logic)  An = 4an-1-3 (recursive rules)  No Standards  New Learning.  Difficult to Test.
  • 14.  Considered Harmful  Led to the concept of Structured Programing  Idea: Code is clearer if we restrict to a few control structures.  Loops have single entry, single exit <<<<<<Back
  • 15.  Procedural programing  Logic Programing  Program can be broken into  Based on use of declarative procedures (or subroutines or statements in the language of functions) mathematical logic.  Examples:  Examples:Prolog Fortran, Algol, Cobol, C, Pas cal  Object-oriented programing  Program is seen as a group of cooperating objects  Ideas: encapsulation, inheritance  Examples:C++, C#, Java, Pyt <<<<Back hon
  • 16. http://techdistrict.kirkk.com/2009/06/17/the-new-era-of-programming-languages/  http://hopl.murdoch.edu.au/  http://www.cs.cornell.edu/Courses/cs212/2008sp/Lectures/Week%206/Week%2006%20- %20Programming%20Languages%20%20.pdf  http://en.wikipedia.org/wiki/Considered_harmful  http://www.stevemcconnell.com/ccgoto.htm