fn get_count(str string) int {
	mut count := 0
	for r in 0 .. str.len {
		if str[r] == `a` || str[r] == `e` || str[r] == `i` || str[r] == `o` || str[r] == `u` {
			count++
		}
	}
	return count
}

fn main() {
	println(get_count('hello'))
}