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  1. /*********************************************************************
  2. * Filename:   rot-13.h
  3. * Author:     Brad Conte (brad AT bradconte.com)
  4. * Copyright:
  5. * Disclaimer: This code is presented "as is" without any guarantees.
  6. * Details:    Defines the API for the corresponding ROT-13 implementation.
  7. *********************************************************************/
  8.  
  9. #ifndef ROT13_H
  10. #define ROT13_H
  11.  
  12. /*************************** HEADER FILES ***************************/
  13. #include <stddef.h>
  14.  
  15. /*********************** FUNCTION DECLARATIONS **********************/
  16. // Performs IN PLACE rotation of the input. Assumes input is NULL terminated.
  17. // Preserves each charcter's case. Ignores non alphabetic characters.
  18. void rot13(char str[]);
  19.  
  20. #endif   // ROT13_H
  21.