Stage 2.8: Writing A Hello World Program

You can create a new file main.rs and put the code from the Rust Playground in it
or you can use cargo to create a new project with either cargo new hello-world or cargo init

cargo will automatically create a src/main.rs for you which already has a Hello, world! output in it.

If you chose cargo to create a basic project for you, all you have to do is to run: cargo run in a terminal and you should see the output: Hello, world!

If you created a main.rs without cargo, you have to use the Rust compiler rustc and run: rustc main.rs.
This will create a main.exe in the same directory. Now you have to execute this compiled file (./main.exe) and you will see the same output.

In a later lesson you will also learn how to split your code into multiple files.