I'm about to start pset3, but the terminal keeps disconnecting, and so I refresh the page. When it opens again, the CS50 Lab no longer has any of the files, and I can't see what the copy.c files does for example. Is this a glitch, or is there any way to fix this?
Like @Blauelf said, instead of using the lab, you could use the CS50 IDE (cs50.io), which is used on the other problems of this pset, and you could upload the files needed onto it from Whodunit files. However, unlike the lab, you need to change your directory using your terminal into the directory that includes the file you're trying to run using cd (e.g. cd Whodunit). The IDE only has a few other differences from the lab, including stylistic changes and the adding of a debugger.