test.rs

fn main() {
    {
        let args: Vec<String> = std::env::args().collect();
        if args.len() < 2 {
            eprintln!("Usage: todo &lt;command&gt; [arguments]");
            return;
        }
        let command = &args[1];
        match command.as_str() {
            "add" => add_todo(),
            "list" => list_todos(),
            "remove" => remove_todo(),
            _ => eprintln!("Unknown command: {}", command),
        }
    }
}