// Make me compile! Scroll down for hints :) fn main() { let x = 10; if x == 10 { println!("Ten!"); } else { println!("Not ten!"); } } // The compiler message is saying that Rust cannot infer the type that the // variable binding `x` has with what is given here. // What happens if you annotate line 4 with a type annotation? // What if you give x a value? // What if you do both? // What type should x be, anyway? // What if x is the same type as 10? What if it's a different type?