Facing problem in getting license for MATLAB

I am typing as it has instructed to do on MATLAB prompt but it is showing '0x0 empty char array', on entering.What to do now?

[Rik]

The content of your question seems unrelated to your title.

Have a read here and here. It will greatly improve your chances of getting an answer.

If your question does relate to licensing issues, you should probably contact Mathworks. Even if sometimes staff members look on this forum and post from time to time, the help on this forum is mostly provided by people who are doing this as a volunteer. You can contact Mathworks support directly with the 'Contact Us' button at the top of the page.