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Jul 21st, 2017
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  1. //#3
  2.  
  3. #include <stdio.h>
  4. #include <string.h>
  5.  
  6. int main()
  7. {
  8. int i;
  9. char filename[256], str[100];
  10. FILE *f;
  11.  
  12. //или вместо этих 2 строк
  13. //scanf("%s", filename);
  14. fgets(filename, 256, stdin);
  15. filename[strlen(filename) - 1] = '\0';
  16.  
  17. if ((f = fopen(filename, "r")) == NULL)
  18. return 0;
  19.  
  20. while (!feof(f))
  21. {
  22. fgets(str, 100, f);
  23. for (i = 1; i <= (int)strlen(str) - 2; i += 2)
  24. printf("%c%c", str[i], str[i - 1]);
  25. if (strlen(str) - 2 % 2 == 1)
  26. printf("%c", str[i + 1]);
  27. printf("\n");
  28. }
  29.  
  30. fclose(f);
  31.  
  32. return 0;
  33. }
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