[Xirdus]

Reminds me of one of my favorite joke programs.

  #include <stdio.h>

  #define SIX 1+5
  #define NINE 8+1
  
  int main() {
      printf("%d\n", SIX * NINE);
  }

[srean]

Didn't Linus #define THREE as something else in Linux source code.

Was that the 2-3-4 tree? Can't seem to find it now.

[Xirdus]

It was from some filesystem code. https://news.ycombinator.com/item?id=7296497

  unsigned three = 1;
  unsigned five = 5;
  unsigned seven = 7;

These actually get changed through pointers to consecutive powers of 3, 5 and 7 respectively. `three` is initialized to the 0th power of 3, but because only a single 1 is needed by the algorithm, `five` and `seven` are initialized to the 1st powers instead.

[srean]

Ah right. Thank you so much. At least I wasn't hallucinating.