initially developed by Dennis Ritchie between 1969 and 1973 at AT&T Bell Labs.
Like most imperative languages in the ALGOL tradition, C has facilities fo
r structured programming and allows lexical variable scope and recursion,
while a static type system prevents many unintended operations.
Its design provides constructs that map efficiently to typical machine instructions,
and therefore it has found lasting use in applications that had formerly been coded in assembly language,
most notably system software like the Unix computer operating system
C is one of the most widely used programming languages of all time, and C compilers are available
for the majority of available computer architectures and operating systems.
Many later languages have borrowed directly or indirectly from C, including C#, D, Go, Rust, Java
, JavaScript, Limbo, LPC, Objective-C, Perl, PHP, Python, Verilog (hardware description language)[3]
and Unix's C shell. The most pervasive influence on these languages (excluding Python) has been
syntactical, and they tend to combine the recognizable expression and statement syntax of
C with underlying type systems, data models, and semantics that can be radically different.
C++ and Objective-C started as compilers that generated C code; C++ is currently nearly
a superset of C,] while Objective-C is a strict superset of C.[citation needed]
Before there was an official standard for C, many users and implementors relied
on an informal specification contained in a book by Dennis Ritchie and Brian Kernighan
; that version is generally referred to as "K&R" C. In 1989 the American National Standards
Institute published a standard for C (generally called "ANSI C" or "C89"). The next year, the
same specification was approved by the International Organization for Standardization as
an international standard (generally called "C90"). ISO later released an extension to the
internationalization support of the standard in 1995, and a revised standard (known as "C99") in 1999.
The current version of the standard (now known as "C11") was approved in December 2011.
::::Content that Dtech Solution is going to teach you is :::
1 Design
2 Characteristics
3 History
3.1 Early developments
3.2 K&R C
3.3 ANSI C and ISO C
3.4 C99
3.5 C11
3.6 Embedded C
4 Syntax
4.1 Character set
4.2 Keywords
4.3 Operators
5 "Hello, world" example
6 Data types
6.1 Pointers
6.2 Arrays
6.3 Array-pointer interchangeability
7 Memory management
8 Libraries
9 Language tools
10 Uses
11 Related languages
12 See also
13 Notes
14 References
15 Further reading
16 External links
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