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Jun 19th, 2019
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  1. #include <iostream>
  2. #include <math.h>
  3. using namespace std;
  4.  
  5. int funx(int i, int n)
  6. {
  7. int k, factorial;
  8. k = 1;
  9. if (n == 0)
  10. factorial = 1;
  11. for (i = 1; i <= n; i++)
  12. k = k * i;
  13. factorial = k;
  14. return k;
  15. }
  16. int main()
  17. {
  18. setlocale(LC_ALL, "rus");
  19. int summ, i, m, n;
  20. summ = 1;
  21. i = 0;
  22. puts ("Введите начала диапоона m") ;
  23. cin >> m;
  24. puts("Введите конец диапазона n");
  25. cin >> n;
  26. for (i = m; i <= n; i++)
  27. {
  28. if (i % 2 == 0)
  29. {
  30. summ = summ + funx(i, n);
  31.  
  32. }
  33. }
  34. cout << summ<< endl;
  35. system("pause");
  36. return 0;
  37. }
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