Hello World
This is the source code of the traditional Hello World program.
println! is a macro that prints text to the
console.
A binary can be generated using the Rust compiler: rustc.
$ rustc hello.rs
rustc will produce a hello binary that can be executed.
$ ./hello
Hello World!
Activity
Click 'Run' above to see the expected output. Next, add a new
line with a second println! macro so that the output
shows:
Hello World!
I'm a Rustacean!