Hello World

How people code “Hello World” varies depending on their age, job and experience:

Source: GNU

High School/Jr. High

 10 PRINT "HELLO WORLD"
 20 END

First year in College

 program Hello(input, output)
 begin
 writeln('Hello World')
 end.

Senior year in College

 (defun hello
 (print
 (cons 'Hello (list 'World))))
 Continue reading