下面代码的执行结果是 >>>x="HappyBirthdaytoyou!" >>>x*3 选项: A: 系统报错 B: Happy Birthday to you! C: "Happy Birthday to you!Happy Birthday to you!Happy Birthday to you!' D: Happy Birthday to you!Happy Birthday to you!Happy Birthday to you! 结果是 报错 发布时间:2024-04-14 01:23:35