Guessing Game giving error of mismatched types

1

I am making the guessing game form the book and when I compare the secret_number and guess var it gives me mismatched types even though that's what the book says, the 2 types are a string and a integer. Any ideas?

2

Can you please paste the code you have written, and the exact output from the compiler?

The program from the book declares two guess variables. First, this guess which is a String:

        let mut guess = String::new();

        io::stdin()
            .read_line(&mut guess)
            .expect("Failed to read line");

But later on, it creates a new variable that is a u32 (a 32-bit unsigned integer):

        let guess: u32 = match guess.trim().parse() {
            Ok(num) => num,
            Err(_) => continue,
        };

When the comparison happens, guess refers to this most-recently declared variable, not the earlier one. (The earlier binding is “shadowed” by the later one, and is no longer visible.)

4 Likes
3

Yes, I fixed it I just didn't read the entire thing, I found it after a couple minutes, but thanks for the help anyway. :slight_smile: