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  1. #include "pch.h"
  2. #include <iostream>
  3. #include <math.h>
  4.  
  5. using namespace std;
  6.  
  7. int digital_root(int n)
  8. {	
  9. 	int length = 1;
  10. 	int divider = 1000000;
  11. 	int d = 10;
  12. 	int result = 0;
  13. 	while (d > 9)
  14. 	{
  15. 		d = n % divider;
  16. 		if (d != n)
  17. 		{
  18. 			length++;
  19. 		}
  20.  
  21. 		divider /= 10;
  22. 	}
  23. 	divider = pow(10, length - 1);
  24. 	d = 10;
  25.  
  26. 	int *arr = new int[length];
  27.  
  28. 	for (int i = 0; i < length; i++)
  29. 	{	
  30. 		arr[i] = floor(n / divider);
  31. 		result += arr[i];
  32. 		n %= divider;
  33. 		divider /= 10;
  34. 		cout << "ELEM" << i << "=" << arr[i] << endl;
  35. 	}
  36.  
  37. 	if (result < 10)
  38. 	{
  39. 		return result;
  40. 	}
  41. 	else
  42. 	{
  43. 		digital_root(result);
  44. 	}
  45.  
  46. 	cout << "Result\t" << result << endl;
  47. 	return result;
  48. }
  49.  
  50. int main()
  51. {	
  52. 	int n;
  53. 	int result;
  54. 	cin >> n;
  55. 	digital_root(n);
  56. 	cout << "Result\t" << result << endl;
  57.  
  58. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp:1:17: fatal error: pch.h: No such file or directory
 #include "pch.h"
                 ^
compilation terminated.
stdout 
Standard output is empty
https://ideone.com/OKWUbz
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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