[Abica]

You need to go add:

  #include <stdio.h> 
  #include <string.h>

and then add int directly before the k on the first line of the donut.

[eps]

No, he does not. All he needs is:

  ./donut

:)

[woodall]

Using your suggestions, and compiler errors, I got this:

http://pastebin.com/Sg5RhUiJ

TBH, this is beautiful.

[zkarcher]

That did it. Thanks!