Procedural programming

Engine

Anbarasan Gangadaran
Sivakumar Venkatraman

@anabarasan, @sivaacbe

 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

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

 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 >>>>

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

 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 Legacy Software(using outdated languages) is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?

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

 Can get real Complex.
 Tower of Babel.

The End

 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.

 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

 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

 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

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

Procedural programming

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