The alt code now lets one redefine the coordinates (which was
deliberately not obfuscated by the author for this purpose). A casual
look at the code would make one think it's not an alt code but it's a
fixed version that the author provided if a certain statement was not
true (see README.md file) so the only thing that is different is that
there is the #ifndef..#define..#endif of coordinates and the fix to
compile (missing a return value, possibly also fixed in the README.md
file, and an added #include <stdio.h> for putchar(3)).
The README.md file has been format fixed.
The alt code is what the author provided but fixed to compile (a value
was left off the 'return' in the code). This was added as alt code for
fun and to help one appreciate the obfuscation all the more.
The Makefile does allow one to build it by running 'make alt' but it is
not explained how to configure it like the original was (explained by
the author). This is left as an exercise to the readers.
Cody Boone Ferguson