A generation of hackers may have started with BASIC on Apple IIs, but getting a C compiler on a modern Mac is a 4GB XCode download
The size of Xcode annoys me too, since I never use it. So I've been using this GCC install on my Mac: https://github.com/kennethreitz/osx-gcc-installer
Couple hundred megabytes. It's still a lot larger than Orca/C was on my Apple IIgs (1 or 2 3.5" floppies?), but then again, compilers come with a lot of libraries these days.