func readAnswer(defaultAnswer string) string {
	answer, _ := stdin.ReadString('\n')
	answer = strings.TrimSuffix(answer, "\n")
	answer = strings.TrimSpace(answer)
	if answer == "" {
		answer = defaultAnswer
	}

	return answer
}
func readAnswer(defaultAnswer string) string {
	answer, _ := stdin.ReadString('\n')
	answer = strings.TrimSuffix(answer, "\n")
	answer = strings.TrimSpace(answer)
	if answer == "" {
		answer = defaultAnswer
	}

	return answer
}
// Read the user's answer from the input stream, trimming newline and providing a default.