// Make me compile! Scroll down for hints :) fn main() { let x: i32 = 777; println!("Number {}", x); } // Oops! In this exercise, we have a variable binding that we've created on // line 4, and we're trying to use it on line 5, but we haven't given it a // value. We can't print out something that isn't there; try giving x a value! // This is an error that can cause bugs that's very easy to make in any // programming language -- thankfully the Rust compiler has caught this for us!