fn character_length(string: String) -> i64 {
    mut length = 0
    for _ in string.code_points() {
        length++
    }
    return length
}

fn main() {
    for string in [
            "Hello world!"
            "møøse"
            "𝔘𝔫𝔦𝔠𝔬𝔡𝔢"
            "J̲o̲s̲é̲"
        ] {
        println("\"{}\" {}", string, character_length(string))
    }
}