Closed before chance to save

I was working on a program for a class and i hadn't saved it since i started working on it. The program I am using to make it froze and i had to close it out without saving. When I go back onto it and type ls -a, it shows the file i was working on with a .# before it. Is that a saved version of my file and if so how do i access it?
which compiler u use
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