how to resolve the error of unable to write file?

Answer 1

[Walter Roberson]

If you are trying to save underneath the MATLAB installation directory then you have two options:

1. Save somewhere else; or
2. Downgrade your operating system to Windows 7. Windows 8 and later do not permit uses to write into the program directories.

If you are trying to save into one of your own directories, then you need to use File Explorer to change the Security Properties of the directory to permit you to write there.

[Zarwish Javaid]

thanks my problem is solved