How do I compile a .c file on my Mac?
Just for the record in modern times,
1 - Just have updated Xcode on your machine as you normally do
2 - Open terminal and
$ xcode-select --install
it will perform a short install of a minute or two.
3 - Launch Xcode. "New" "Project" ... you have to choose "Command line tool"
Note - confusingly this is under the "macOS" tab.
Select "C" language on the next screen...
4- You'll be asked to save the project somewhere on your desktop. The name you give the project here is just the name of the folder that will hold the project. It does not have any importance in the actual software.
5 - You're golden! You can now enjoy c with Mac and Xcode.