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Nov 14th, 2019
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  1. #include<iostream>
  2.  
  3. using namespace std;
  4. int main()
  5. {
  6. setlocale(LC_ALL, "Russian");
  7. int a, b, c,res,i,n,m;
  8. res = 0;
  9. cout << "Введите число ";
  10. cin >> n;
  11.  
  12. for (i = 100; i <= 999; i++)
  13. {
  14. a = i / 100;
  15. b = (i % 100) / 10;
  16. c = i % 10;
  17. if (a + b + c == n);
  18. {
  19. res++;
  20. }
  21.  
  22.  
  23. }
  24. cout << "Колличество натуральных трёхзначных чисел" << res;
  25. }
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