Meaning – The term hello, refers to the protocol used by a group of cooperating, trusting routers to allow them to discover minimal delay routes.
In the context of programming, the term hello may refer to the hello world program that coders usually write when they are starting off with a new programming language, in order to test out the basic syntax of the new language.
When the programmer executes a hello world program, the screen displays the message “hello world”, on the display. This indicates that the code is error-free.
Example of usage – “When he decided to study the new, recently launched programming language, the first thing he did after his beginner lesson, was to write a hello world program to see if he had understood the basic syntax. Fortunately for him, the output showed up and he could move on to the next lesson.”