C programming language
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| C programming language | |
|---|---|
| Paradigm | Imperative, structured |
| Designed by | Dennis Ritchie |
| Developed by | Bell Labs |
| First appeared | 1972 |
| Typing | Statically typed, weakly typed |
| Implementations | GCC, Clang, Microsoft Visual Studio |
| Influenced by | B (programming language), Unix, Assembly language |
| Influenced | C++, Java (programming language), Python (programming language) |
C programming language is a general-purpose, imperative computer programming language developed by Dennis Ritchie at Bell Labs between 1969 and 1973, with the assistance of Brian Kernighan, Ken Thompson, and Rob Pike. The language was designed to be efficient, portable, and easy to use, and it has become one of the most popular programming languages in the world, widely used in operating systems, embedded systems, and applications software, including Microsoft Windows, Linux, and macOS. C has also influenced the development of many other programming languages, including C++, Java (programming language), and Python (programming language), and has been used by notable programmers such as Donald Knuth, Bjarne Stroustrup, and Linus Torvalds.
Introduction
The C programming language is a low-level, compiled language that provides direct access to hardware resources, making it a popular choice for systems programming and embedded systems development. C is also a versatile language that can be used for a wide range of applications, from web development using Apache HTTP Server and Nginx, to game development using Unity (game engine) and Unreal Engine. The language's simplicity, efficiency, and portability have made it a favorite among programmers, including Richard Stallman, Eric S. Raymond, and Guido van Rossum, who have used C to develop popular software such as GNU Emacs, GNU Debugger, and Python (programming language).
History
The development of the C programming language began in 1969 at Bell Labs, where Dennis Ritchie and Brian Kernighan were working on the Unix operating system. The language was initially called "New B" and was designed to be a successor to the B (programming language), which was developed by Ken Thompson. The first version of C, known as K&R C, was released in 1972 and was used to develop the Unix operating system and other software, including GNU and Linux. The language was later standardized by the American National Standards Institute (ANSI) in 1989, resulting in the ANSI C standard, which was widely adopted by the computer industry, including companies such as IBM, Microsoft, and Apple Inc..
Syntax_and_semantics
The syntax and semantics of the C programming language are designed to be simple, efficient, and easy to use. The language uses a syntax similar to that of ALGOL 68 and Pascal (programming language), with a focus on structured programming and modular code. C's syntax is composed of a set of keywords, such as if, while, and for, which are used to control the flow of a program, and a set of operators, such as +, -, and *, which are used to perform arithmetic and logical operations. The language also provides a range of data types, including int, char, and float, which can be used to store and manipulate data, and has been used by notable programmers such as Donald Knuth and Bjarne Stroustrup to develop popular software such as TeX and C++.
Standard_library
The C standard library provides a range of functions and macros that can be used to perform common tasks, such as input/output operations, string manipulation, and mathematical calculations. The library includes functions such as printf, scanf, and malloc, which are used to perform input/output operations and manage memory, and has been used by notable programmers such as Richard Stallman and Eric S. Raymond to develop popular software such as GNU Emacs and GNU Debugger. The library is divided into several sections, including the stdio.h header file, which provides functions for input/output operations, and the stdlib.h header file, which provides functions for memory management and process control, and has been used by companies such as IBM, Microsoft, and Apple Inc..
Applications_and_uses
The C programming language has a wide range of applications and uses, from operating systems and embedded systems to applications software and web development. C is widely used in the development of Linux and other Unix-like operating systems, and is also used in the development of Windows and macOS. The language is also used in a range of other applications, including game development, scientific computing, and financial modeling, and has been used by notable programmers such as John Carmack and Michael Abrash to develop popular software such as Doom (video game) and Quake (video game).
Criticisms_and_limitations
Despite its popularity and versatility, the C programming language has several criticisms and limitations. One of the main criticisms of C is its lack of safety features, such as memory safety and type safety, which can make it prone to errors and vulnerabilities, such as buffer overflows and null pointer dereferences. The language also lacks a range of modern features, such as object-oriented programming and garbage collection, which can make it less suitable for certain types of applications, such as web development and mobile app development. However, the language's simplicity, efficiency, and portability continue to make it a popular choice among programmers, including Linus Torvalds and Guido van Rossum, who have used C to develop popular software such as Linux and Python (programming language).