mirror of
https://github.com/notohh/rustlings.git
synced 2024-11-22 14:02:22 -05:00
47 lines
557 B
Rust
47 lines
557 B
Rust
// variables2.rs
|
|
// Make me compile! Scroll down for hints :)
|
|
|
|
fn main() {
|
|
let x;
|
|
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 5 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?
|