My brakes suddenly stopped working...o.0

This morning before going to work I parked my car after work came back and right when I started it I noticed the brakes had no pressure when I pressed them. I don't see any leaks on the ground besides my engine oil, also the brake fluid was full. From what I could see the brake lines didn't show any leaks but I wasn't able to inspect them 100%. So I came hear for advice before I make any decisions like always...

PS:Can a master cylinder just not work out the blue?

Disregard this post. I fixed my problem some how by bleeding the back drum brakes fixed it.

Disregard this post. I fixed my problem some how by bleeding the back drum brakes fixed it.
If that fixed it, then you had to have air in the brake system.

Yeah your right, but I have no clue how it happened. Because I went to work parked my car and when I came back my brakes had air in them. Strange at first but, I thought someone messed with my car when I was gone but I didn't want to sound to strange.

Have you inspected the rear brakes? Are they properly adjusted?

No I didn't, I've never adjusted rear brakes before but when I get pads for all 4 tires I can do that.

This is funny after hitting my starter so many times it now cranks up everytime lol

if it ain't broke don't fix it right