You were in a zombie apocalypse and you've managed to survive for 2 years,alone,because your parents died and became zombies

You were searching for food in an old convenience shop,when you suddednly hear some noises and you look around you a bit...confused?you saw nothing.. As you continue to search for food you continue to hear noises from behind you,so,you stand up straight again and look behind you and you see...A zombie?! He was hiding behind a counter,probably spying on you...

What do you do?take out your gun and shoot at him or...?