- **Epistemic status:** #evergreen Often used as the starting point when first learning a programming language. A Hello World is a simple [[Computer Program]] which outputs or displays the message "Hello World". This in turn illustrates the programming language basic syntax. The tradition of using "Hello World" as a starting point was influenced by an example [[Computer Program]] in the 1978 book The C Programming Language. ``` main( ) { printf("hello, world"); } ``` --- ## References - _Hello World!_ (n.d.). Code.Org. Retrieved July 27, 2024, from <https://code.org/helloworld> - “Hello, World!” program. (2024). In _Wikipedia_. <https://en.wikipedia.org/w/index.php?title=%22Hello,_World!%22_program&oldid=1236544858> - Kernighan, B. W., & Ritchie, D. M. (with Internet Archive). (1978). _The C programming language_. Englewood Cliffs, N.J. : Prentice-Hall. <http://archive.org/details/cprogramminglang00kern> - _Programming Fundamentals/Hello World—Wikibooks, open books for an open world_. (n.d.). Retrieved July 27, 2024, from <https://en.wikibooks.org/wiki/Programming_Fundamentals/Hello_World> - _The History of “Hello, World.”_ (2015, April 21). HackerRank Blog. <https://www.hackerrank.com/blog/the-history-of-hello-world/> - _The History of Hello World: A Brief Overview—CodeInterview Blog_. (n.d.). Retrieved July 27, 2024, from <https://codeinterview.io/blog/the-history-of-hello-world-a-brief-overview/>