I'm getting “clang: error: no input files”

Question

I had a file which I deleted and replaced with another file, somewhere else, of the same name.

Despite cleaning, and trying this multiple times, I keep getting this

Answer 1

I had this error in monodevelop. I just went to edit>preferences and changed the default location of the program files. It was set to the monodevelop default they give you when you open a file and not the folder i changed it too. Likely, you need to adjust the settings of xcode, where you stored your files.