mod utils; fn main() { let mut x:char = args[1][0]; x = tolower(x); match x { 'a'|'e'|'i'|'o'|'u' => { println!("{}", format!("{0:c} is a vowel", u32(x))); } 'y' => { println!("y is sometimes a vowel"); } _ => { println!("{}", format!("{0:c} is a consonant", u32(x))); } } }