Introduction to C Programming

What is C ?

C is a structured, high-level, machine-independent programming language developed by Dennis MacAlistair Ritchie between 1969 to 1973 at Bell Labs, USA for the purpose of System Programming on Unix Operating System.

Father of C Language - Dennis McAltair Richie
Father of C Language – Dennis McAltair Richie

Brief History:

  1. Martin Richards developed BCPL (Basic Combined Programming Language) which inspired Ken Thompson to write B Language.
  2. Ken Thompson created B and write whole Unix Operating System in B Language.
  3. Dennis Richie, created C as a system implementation language for Unix OS inspired by BCPL (As Grandparent) & B (As Parent).
  4. BCPL & B – Both were “typeless”, while C Language clearly defined data type.
  5. Ken Thompson along with Dennis Ritchie re-written larger parts of the Unix OS in C as it was more powerful then B.
  6. C Language made Unix OS portable to all major computers.
  7. First C Manual/Book published by Brian Kerningham & Dennis Ritchie titled – “The C Programming Language’ with initials of authors (K&R),thus C got popular and called K&R C.
  8. ANSI (American National Standards Institute) appointed committee to standardize C Language in 1983 which was released in 1989 & called ANSI C, Standard C or C89
  9. In 1990 ISO adopted ANSI C thus C89 referenced also as ANSI/ISO C or C90.
  10. The C standard was further revised in the late 1990s, leading to the publication of ISO/IEC 9899:1999 in 1999, which is commonly referred to as “C99”
  11. Last Stable Release of ISO/IEC Standard C called C11 and was revised in 2004 with several new features added.

Why Learn C ?

  1. C is easy to learn, portable to nearly any machine including PC to Super Computers.
  2. C provides clearly defined data type as well as wide variety of operators.
  3. C have rich functions libraries & can be extended by adding user-defined(programmer) library.
  4. C is written in assembly, made for system implementation & having libraries so can be used to create nearly any kind of program including compilers/editors etc as well as business application packages.
  5. Most Major Modern Technologies such as Oracle (Database), PHP(Server Side Scripting), Linux OS, Android Mobile OS, MySQL are written in C.



2 thoughts on “Introduction to C Programming

  • October 20, 2017 at 8:17 PM
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    Sir, do we have to write the introduction of ‘C’ language?

    • October 21, 2017 at 2:36 AM
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      Dear Ayush,
      No.I think I have answered you on live chat. But for here also I am again clearing this thing. You have to only write program which I have mentioned in C Programs section.Thats it.
      Thanks.

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