Hello world is a small, simple program that is used to demonstrate the syntax of a programming language.
If you read my last post, I recommended ruby. That will be the programming language we'll be using to write our simple program. You can download ruby here for any platform:
Here is the entire “Hello World” program written in ruby:
puts “Hello World”
If you saved that snippet as
hello_world.rb (a ruby file), and ran it in your terminal(or command prompt on windows), it would look like this:
ruby hello_world.rb Hello World
the first line in the above snippet is running the program
hello_world.rb, and the second line is the output from the program, in this case, it is printing
I made a gif showing me writing this program from the start, I’m using vim as the text editor to write the ruby file, save it, then run it with the same commands I used above:
That’s it! First Program Written. We're all programmers now.
A bit about me
I've been learning about programming for at least a decade, and I probably won't stop. You can check out my intro post and some of the projects I've worked on:
And my last post "How to become a self-taught programmer":