Return: Quiz III in Rust

Quiz: What would this code produce if we were to copy-paste it in a code editor and run it?

fn get_greeting(name: &str) -> String {
	println!("Hey, {}", name);
}

fn main_function() {
	let greeting = get_greeting("Andy");
	println!("{}", greeting);
}

Important Note:

Do not use an actual code editor to get the answer! It would defy the whole purpose of the quiz!