Let’s start by a classical hello world example! Open the project
directory in your favorite text editor and add the following code to
Above code is the simplest form of writing a hello world program in Clio, let’s break it down a little bit:
On the first line, we’ve defined a function named
main. Every runnable Clio program needs a
mainfunction and this function needs to be exported. If you don’t know what that means, don’t worry, you’ll learn about it soon.
On the second line, we call
"Hello world!"to it. This function prints the arguments passed to either to your terminal, or to the browser’s console.
Running this program should show
Hello world! in the console. Go on
and try it out by running
clio run in your project’s root folder.
Congrats on writing and running your first Clio program!