1st semester - c programming csit notes
C is a general-purpose high level language that was originally developed by Dennis Ritchie for the UNIX operating system. It was first implemented on the Digital Equipment Corporation PDP-11 computer in 1972.
The UNIX operating system and virtually all UNIX applications are written in the C language. C has now become a widely used professional language for various reasons.
- Easy to learn
- Structured language
- It produces efficient programs.
- It can handle low-level activities.
- It can be compiled on a variety of computers.
Online C Compiler : Here
Facts about C
a) C was invented to write an operating system called UNIX.
b) C is a successor of B language which was introduced around 1970
c)The language was formalized in 1988 by the American National Standard Institute (ANSI).
d) By 1973 UNIX OS was almost totally written in C.
e) Today C is the most widely used System Programming Language.
f) Most of the state of the art software have been implemented using C
Why to use C?
C was initially used for system development work, in particular the programs that make-up the
operating system. C was adopted as a system development language because it produces code that runs nearly as fast as code written in assembly language. Some examples of the use of C might be:
1) Operating Systems
2) Language Compilers
3) Assemblers
4) Text Editors
5) Print Spoolers
6) Network Drivers
7)Modern Programs
8)Data Bases
9)Language Interpreters
10) Utilities
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