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By: a guest on May 26th, 2012  |  syntax: C  |  size: 0.29 KB  |  hits: 16  |  expires: Never
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  1. #include <stdio.h>
  2. #include <ctype.h>
  3.  
  4. int main(int argc, char *argv[]) {
  5.     if (argc != 2)
  6.         return 1;
  7.     for ( ; *argv[1]; *argv[1]++)
  8.         putchar(isalpha(*argv[1]) ? tolower(*argv[1]) - 'a' > 13 ? *argv[1] - 13 : *argv[1] + 13 : *argv[1]);
  9.     putchar('\n');
  10.     return 0;
  11. }