Hello, world!

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A "Hello, world!" program is a trivial program which outputs a static string of text[note 1], usually

Hello, world!

This program is often the first one written in a new esoteric programming language, to demonstrate output. It is a popular problem.

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.

See also


  1. If the static string is not a variant of "Hello world", then the problem may be more often called a "Kolmogorov complexity" problem.

External resources