Hello World

Hello World is a simple program that, when run, displays: Hello World

A "Hello, World!" program is traditionally used to introduce novice programmers to a programming language.

"Hello, world!" is also traditionally used in a sanity test to make sure that a computer language is correctly installed, and that the operator understands how to use it.

"Hello, world!" is also used by computer hackers as a proof of concept that arbitrary code can be executed through an exploit where the system designers did not intend code to be executed.