It's my first rust project.

UpDown.rs

use std::io;
use std::io::Write;

fn guessingMachine(guessValue: u16) {
    loop {
        let mut valueOfGuessStr = String::new();
        print!("You Guess : ");
        io::stdout().flush();
        io::stdin()
            .read_line(&mut valueOfGuessStr)
            .expect("Something went wrong ( Input Guessing )");

        let valueToGuess: u16;

        match valueOfGuessStr.trim().parse::<u16>() {
            Ok(input) => {
                if guessValue == input {
                    println!("You Correct");
                    break;
                }
                else if guessValue < input {
                    println!("Down");
                }
                else {
                    println!("Up");
                }
            },
            Err(..) => println!("{} is not a number", valueOfGuessStr)
        }

    }
}

fn main() {
    print!("--Up Down----Input A value you guess : ");
    io::stdout().flush();
    let mut valueOfGuessStr = String::new();

    io::stdin()
        .read_line(&mut valueOfGuessStr)
        .expect("Something went wrong ( Input Int Value )");

    let valueToGuess: u16;

    match valueOfGuessStr.trim().parse::<u16>() {
        Ok(value) => {
            println!("GAME START. YOU GUESS");
            guessingMachine(value);
        },
        Err(..) => println!("{} is not a number", valueOfGuessStr)
    }

}