However, some authors restrict the term "programming language" to Turing complete languages. ANSI/ISO SQL-92 and Charity are examples of languages that are not Turing complete, yet are often called programming languages. The majority of practical programming languages are Turing complete, and all Turing complete languages can implement the same set of algorithms. One way of classifying computer languages is by the computations they are capable of expressing, as described by the theory of computation. For instance, markup languages are sometimes referred to as computer languages to emphasize that they are not meant to be used for programming. Similarly, languages used in computing that have a different goal than expressing computer programs are generically designated computer languages. One usage describes programming languages as a subset of computer languages. However, the usage of both terms varies among authors, including the exact scope of each. The term computer language is sometimes used interchangeably with programming language. There are many considerations when defining what constitutes a programming language.Ĭomputer languages vs programming languages Programming language theory is the subfield of computer science that studies the design, implementation, analysis, characterization, and classification of programming languages. Ī language usually has at least one implementation in the form of a compiler or interpreter, allowing programs written in the language to be executed. These are usually defined by a formal language. When compiled and run, it will give the output " Hello, world!".Ī programming language is usually described in terms of its syntax (form) and semantics (meaning). The gray lines are comments that help explain the program to humans in a natural language. The source code for a simple computer program written in the C programming language. Language for communicating instructions to a machineĪ programming language is a system of notation for writing computer programs.
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