What Hello World means?
A “Hello, world!” program is a computer program that outputs or displays “Hello, world!” to a user. Being a very simple program in most programming languages, it is often used to illustrate the basic syntax of a programming language for a working program, and as such is often the very first program people write.
Where do Hello World come from?
Brian Kernighan actually wrote the first “hello, world” program as part of the documentation for the BCPL programming language developed by Martin Richards. BCPL was used while C was being developed at Bell Labs a few years before the publication of Kernighan and Ritchie’s C book in 1972.
Why is Hello World so famous?
They are usually the first programs that new coders learn, because even those with little or no experience can execute Hello World both easily and correctly. Above all, Hello World is simple. That’s why it is so often used as a barometer of program success.