阅读程序写结果 public class ControlDemo03 { public static void main(String[] args) { int score =5; System.out.println(); String sign = ""; switch (score) { case 10: sign = "A级"; case 9: sign = "B级"; case 8: sign = "C级"; break; case 7: case 6: sign = "D级"; break; case 5:sign = "F级"; case 4:sign = "G级"; case 3:sign = "H级"; case 2:sign = "I级"; case 1:sign = "J级"; case 0:sign = "K级";break; default: sign = "分数格式不正确!"; } System.out.println("您的分数等级为:" + sign); } }