下面代码的执行结果是()()()。()string()email=”wanghan@qq.com”;()if(email.IndexOf(“@”)<=0||email.IndexOf(“@”)>email.IndexOf(“.com”))(){()MessageBox.Show(“Email()格式不正确!()”);()return;()}()MessageBox.Show(“()你的()Email()是()”+email);A.()没有任何结果()B.()弹出消息框()”()Email()格式不正确!()”()C.()弹出消息框()”()你的()Email()是()wanghan@qq.com”()D.()弹出消息框()”()Email()格式不正确()!()”()弹出消息框()”()你的()Email()是()wanghan@qq.com()”
举一反三
- 小鱼申请了一个QQ邮箱,用户名是xiaoyu,那么她的邮箱地址应该是()。 A: A[email protected] B: Bxiaoyu.qq.com C: C[email protected] D: D[email protected],com
- 写出下面PHP代码运行的输出结果____。$email="user@example.com";$len = strlen($email);$p = strpos($email, "@");echo substr($email, $p+1), "-", substr($email, 0, -($len-$p));
- 下面属于绝对地址的是() A: /email/default.asp B: www.exambase/email C: www.exam.com/default.asp D: http://www.ab E: com/default.a
- 按用户意愿分类,Email营销可以分为()。A.()许可Email营销和未经许可的Email营销B.()内部Email营销和外部Email营销C.()临时性的Email营销和长期Email营销D.()经营型Email营销和非经营型Email营销
- 查询student表中的所有非空email信息, 以下语句正确的是( ) A: Select email from student where email !=null B: Select email from student where email not is null C: Select email from student where email <> null D: Select email from student where email is not null