Hello World in Rust

Create a new file in your project called main.rs and write the following

fn main() {
    println!("Hello, world!");
}

In terminal window (mac/linux) run

rustc main.rs
./main

For windows

> rustc main.rs
> .\main.exe

There we go! hello World!

As you notice. Rust requires compiling, before we can run the program. rustrc is the keyword for compiling.

After running rustrc, if you see your project dir, you can see there is main file besides our source code from before main.rs. It’s the executable file.