Lecture 1- History of C Programming

Lecture 1- History of C Programming

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  History of CProgramming Language Md. Imran Hossain Showrov (showrovsworld@gmail.com) 1 1
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  Outline  What isC Programing?  Why C language is so Important?  Origin of C Language  History of C Language
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  What is CPrograming? C is a high-level and general purpose programming language that is ideal for developing firmware or portable applications. Originally intended for writing system software, C was developed at Bell Labs by Dennis Ritchie for the Unix Operating System (OS) in the early 1970s.
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  Why C languageis so Important?  C language cases:  Oracle is written in C  Core libraries of android are written in C  MySQL is written in C  Almost every device driver is written in C  Major Part of web browser is written in C  Unix Operating system is developed in C  C is the word’s most popular programming language
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  Why C languageis so Important? (cont..)  For a student point ofView:  C is important to build programing skills.  C covers basic features of all programming  C is also helpful for Campus recruitment process  C is the most popular language for hardware dependent programs
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  The Creator ofC language  Dennis MacAlistair Ritchie was an American computer scientist. He created the C programming language. He also created The Unix operating system with his long time colleague Ken Thompson. Dennis Ritchie 1941-2011 Father of C and UNIX
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  1960 • ALGOL • InternationalGroup 1967 • BCPL • Martin Richards 1970 • B • Ken Thompson 1972 • Traditional C • Dennis Ritchie 1978 • K & R C • Brain Kernighan & Dennis Ritchie 1989 • ANSI C • ANSI Committee 1990 • ANSI/ISO C • ISO Committee Origin of C Language
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  Origin of CLanguage (cont..)  BCPL and B are "type less" languages whereas C provides a variety of data types.  In 1972 Dennis Ritchie at Bell Labs writes C and in 1978 the publication ofThe C Programming Language by Kernighan & Ritchie caused a revolution in the computing world.
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  History of CLanguage  Evolved from two previous languages – BCPL, B  BCPL (Basic Combined programming language) used for writing OS & compilers  B used for creating early versions of UNIX OS  Both are “typeless” language  C language evolved from B (Dennis Ritchie – Bell labes)
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  Algol programming language Algol is a computer programming language  Developed in 1958.  Named for the algorithmic process of definition of a programming problem.  Short for Algorithmic Language.  Uses words to bracket blocks and was the first to use begin end pairs.
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  BCPL  Full form:Basic Combined Programming Language.  Developed in 1996.  Developed by Martin Richards  Its having high portability.  BCPL is the successor to the CPL programming language.
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  B  Developed in1969  Designed by D. M. Ritchie and K. L.Thompson  Developed at Bell Labs  B was derived from BCPL  Designed for primarily non-numeric applications.