Hello, World!
A "Hello, World!" program is generally a simple computer program which outputs (or displays) to the screen (often the console ) a message similar to "Hello, World!" while ignoring any user input. A small piece of code in most general-purpose programming languages , this program is used to illustrate a language's basic syntax . A "Hello, World!" program is often the first written by a student of a new programming language, but such a program can also be used as a sanity check to ensure that the computer software intended to compile or run source code is correctly installed, and that its operator understands how to use it. History "Hello, World!" program handwritten in the C language and signed by Brian Kernighan (1978) While small test programs have existed since the development of programmable computers , the tradition of using the phrase "Hello, World!" a...