# programming language

> language for communicating instructions to a machine

**Wikidata**: [Q9143](https://www.wikidata.org/wiki/Q9143)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Programming_language)  
**Source**: https://4ort.xyz/entity/programming-language

## Summary
A programming language is a formal language used to communicate instructions to a machine, particularly computers. It enables developers to write code that controls computer behavior, processes data, and executes tasks. Programming languages vary in design and purpose, supporting different paradigms such as imperative, functional, or logic-based programming.

## Key Facts
- Used primarily for **computer programming**.
- A **subclass of computer language**.
- Part of the broader domain of **computer science**.
- Supports various programming paradigms including **functional**, **imperative**, **logic**, and **object-oriented programming**.
- Has components like **syntax**, **execution model**, **type system**, and often includes a **standard library**.
- Related classes include **concurrent programming language**, **data-driven programming language**, and **domain-specific mini-languages**.
- Studied under the discipline of **programming language theory**.
- Central property identifiers in Wikidata: **P277**, **P3985**, **P4428**.

## FAQs
### Q: What is a programming language used for?
A: A programming language is used to write instructions that machines—especially computers—can execute. These instructions control software applications, automate tasks, process data, and manage hardware interactions.

### Q: How many types of programming languages exist?
A: There are numerous types categorized by paradigm (like functional or object-oriented), execution method (compiled vs interpreted), and application area (such as web development or artificial intelligence). Examples include Python, Java, C++, and JavaScript.

### Q: Is there a difference between a programming language and a scripting language?
A: Scripting languages are typically subsets of programming languages, often interpreted rather than compiled. However, the distinction has blurred over time; both serve similar purposes but may differ in performance or usage context.

## Why It Matters
Programming languages form the foundation of modern computing and digital communication. They empower humans to instruct machines with precision, enabling everything from operating systems and mobile apps to artificial intelligence and scientific simulations. Without them, complex automation and global connectivity would be impossible. As technology evolves, new languages emerge tailored to emerging fields like quantum computing, data science, and distributed systems, ensuring continued innovation across industries.

## Notable For
- Being essential tools for **software development** and computational problem-solving.
- Enabling diverse **programming paradigms** such as procedural, functional, logic-based, and reactive programming.
- Supporting specialized domains through **domain-specific languages (DSLs)** and educational tools via **mini-languages**.
- Having rich ecosystems involving **syntax rules**, **type systems**, **libraries**, and **runtime environments**.
- Being central to academic research in **programming language theory** and influencing how computation is modeled and implemented.

## Body
### Definition and Core Purpose
A programming language serves as an intermediary between human intent and machine execution. It provides a structured way to define algorithms and manipulate data within computing systems.

### Classification and Types
Programming languages can be grouped into multiple overlapping categories based on their features and intended use:
- **Imperative programming language**: Implements step-by-step commands (e.g., C).
- **Functional programming language**: Emphasizes functions and immutable data (e.g., Haskell).
- **Logic programming language**: Based on formal logic (e.g., Prolog).
- **Concurrent programming language**: Designed to handle simultaneous computations (e.g., Erlang).
- **Mini-language**: Simplified languages aimed at education or niche tasks.

Other notable subclasses include:
- Dataflow programming language
- Reactive programming language
- Synchronous programming language
- Hybrid programming language

### Structure and Components
Each programming language consists of several core elements:
- **Syntax**: Rules defining valid code structure.
- **Semantics**: Meaning behind syntactic constructs.
- **Execution Model**: Defines how programs run (interpreted or compiled).
- **Type System**: Manages data classification and error prevention.
- **Standard Library**: Predefined functions and utilities included with the language.

### Relationship to Computers and Theory
Programming languages are integral parts of **computers**, which are general-purpose devices capable of executing logical and arithmetic operations. The study of these languages falls under **programming language theory**, a branch of computer science focused on designing, implementing, and analyzing languages.

### Community and Resources
There are extensive resources related to programming languages:
- Lists such as *list of programming languages* and *list of programming languages by type* help categorize and compare options.
- Online communities like Reddit’s r/ProgrammingLanguages and Stack Overflow tags provide platforms for discussion and troubleshooting.
- Academic databases and encyclopedias classify and document each major language and its evolution.

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## References

1. Nuovo soggettario
2. Freebase Data Dumps. 2013
3. BBC Things
4. YSO-Wikidata mapping project
5. BabelNet
6. Quora
7. [Source](https://www.abs.gov.au/AUSSTATS/abs@.nsf/DetailsPage/1297.02008?OpenDocument)
8. KBpedia
9. [Source](https://vocabs.ardc.edu.au/viewById/316)
10. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)