Array in function

fn main(){
   let x = [1, 2, 3, 4,  5];
   let result = count_items(&x);
   println!("{}", result);
}

fn count_items(item: &[i32]) -> usize{
    item.len();
}

its not working

fn count_items(item: &[i32]) -> usize{
    item.len() // no `;` at the end
}

By the way, just continue on the previous thread where you ask the original question.