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Jun 21st, 2018
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  1. int rot13(int i)
  2. {
  3. if (i >= 'A' && i < 'N')
  4. {
  5. return i + ROT;
  6. }
  7. else if (i >= 'N' && i < 'Z')
  8. {
  9. return i - ROT;
  10. }
  11. else if (i >= 'a' && i < 'n')
  12. {
  13. return i + ROT;
  14. }
  15. else if (i >= 'n' && i < 'z')
  16. {
  17. return i - ROT;
  18. }
  19. else
  20. {
  21. return i;
  22. }
  23. }
  24.  
  25. void rotstr(char c[])
  26. {
  27. int length = strlen(c);
  28. int i;
  29. for (i = 0; i < length; i++);
  30. }
  31.  
  32. void test_cases(void)
  33. {
  34. checkit_int(rot13('a'), 'n');
  35. checkit_int(rot13('o'), 'b');
  36. checkit_int(rot13('A'), 'N');
  37.  
  38. }
  39.  
  40. int main(void)
  41. {
  42. char c[100];
  43. test_cases();
  44.  
  45. while (fgets(c, 100, stdin) != NULL)
  46. {
  47. rotstr(c);
  48. printf("%s", c);
  49. }
  50.  
  51. return 0;
  52. }
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