Why does my code become like this?why does it happen?

Yesterday i run the code,and it still keep running ,and i found the code become this below suddenly,why?Why does my code become like this?why does it happen?

MATLAB 5.0 MAT-file, Platform: PCWIN64, Created on: Sat Apr 06 06:44:09 2019    

However,the code is still running,do i need to stop the code ,and re-run the code again?or that is ok even if the code become this?

Answer 1

[Walter Roberson]

At some point you did a save() listing the .m file as the file name.

Your source code is probably gone, but you could look in the directory to see if you happen to have a .asv (autosave) file. On Mac or Linux look for a .m~ file .