A "Hello, world!" program is a trivial program which outputs a static string of text[note 1], usually
The program comes from the first example program in the classic K&R C manual. Note that the K&R version was in all lowercase and lacked an exclamation mark.
- Hello world program in esoteric languages, a list of hello world programs in different esoteric languages
- Hello, a joke language
- HQ9+, another joke language
- If the static string is not "Hello world", then the problem may be more often called "kolmogorov complexity" problem.