Will I lose my apps from my iPhone if I sync to my recently formatted PC?

I had to reformat my hard drive, so I pretty much have nothing on it. Before that, I had my iPhone synced to my computer and all of the apps were available. I authorized the computer now, and when I went to sync it the message said if I do so, I everything that is on the iPhone will then be synced to computer (which is nothing). Is there a way to transfer my apps from my phone to my computer, or a way to sync it and not lose anything?