rot13.c

   1 /*
   2  * Encrypts message using ROT13
   3  * Released to Public Domain
   4  *
   5  * This is part of Tiny Applications Collection
   6  *   -> http://tinyapps.sourceforge.net/
   7  */
   8
   9 #include <stdio.h>
  10 main(a){while(a=~getchar())putchar(~a-1/(~(a|32)/13*2-11)*13);}