Now that we have installed Noir, it's time to make our first hello world program!
Noir code can live anywhere on your computer. Lets create a Projects folder in the
Home to house our Noir programs.
For Linux, macOS, and PowerShell on Windows, enter this in your terminal:
$ mkdir ~/projects $ cd ~/projects
For Windwows CMD, enter this:
> mkdir "%USERPROFILE%\projects" > cd /d "%USERPROFILE%\projects"
Now that we are in the projects directory, enter the following command:
nargo new hello_world
We use the
new command to create a new Noir project. This project will be located in the
cd into the
hello_world folder and enter this:
$ nargo build
Now that the project is built, we need to create a proof of correct execution. Edit the file
Prover.toml with the following content:
x = "1" y = "2"
Now you can run the proof generation and verification commands:
$ nargo prove my_proof $ nargo verify my_proof true
Congratulations, you have now created and verified a proof for your very first Noir program!
In the next section, we will go into more detail on exactly what just happened.