I am confused with the * and & operator in Rust, it seems to do the same thing with the code I have written.

fn main() {
    let mut testnum: u32 = 10;
    println!("{}", testnum);
    changeme(&mut testnum);
    println!("{}", testnum);
}

fn changeme(num: &mut u32) -> () {
    *num = 11;
    println!("{}", &num);
    println!("{}", *num);
    println!("{}", num);
}

output:

10
11
11
11
11

I am confused why '&num', '\*num', and 'num' prints the same value. Can someone explain why this happens?