fn start_main() -> i64 {
    print("File: ");
    let name = read_line();
    let content: result<string> = read_text_file(name);
    if (content::ok) {
        print(content::value);
    } else {
        print("error: ");
        print(content::error::code);
        print("\n");
    }
    return 0;
}