How to use Xcode 6 debugging for single C file Xcode 6 has Run, build, pretty much everything in debug menu greyed out for a single C file that I open in Xcode. This is a prebuilt program. I wish to debug it, and make changes to the file, but it seems that it must be a project to use debug functionality. Is this true?

I am in university so I wish to have single files as they are submitted like that. If it is not possible to debug on Xcode, are there any better recommendations?

Thanks.
You need to have project in order to be able to debug in Xcode. Xcode has to know how to compile/link/build Your files. You can make it very quickly by creating Command line tool. Go to File -> New.. -> Project... ⌘⇧N. Choose OS X -> Application -> Command Line Tool. On the next screen choose language to be C. Then You'll have new project with main.c file where You can start coding and debugging.