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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int hitungNomorBit(int angka, int nomorBit);
  5. string intToBin(int angka);
  6.  
  7.  
  8. int main() {
  9. 	cout << "hitungNomorBit(13, 0): " << hitungNomorBit(13, 0) << endl;
  10. 	cout << "hitungNomorBit(13, 1): " << hitungNomorBit(13, 1) << endl;
  11. 	cout << "hitungNomorBit(13, 2): " << hitungNomorBit(13, 2) << endl;
  12. 	cout << "hitungNomorBit(128, 0): " << hitungNomorBit(128, 0) << endl;
  13. 	cout << "hitungNomorBit(128, 1): " << hitungNomorBit(128, 1) << endl;
  14. 	return 0;
  15. }
  16.  
  17. int hitungNomorBit(int angka, int nomorBit)
  18. {
  19. 	string bin {intToBin(angka)};
  20. 	int count {0};
  21.  
  22. 	if (nomorBit == 0 || nomorBit == 1)
  23. 	{
  24. 		for (char c: bin)
  25. 		{
  26. 			if (c - '0' == nomorBit)
  27. 			{
  28. 				count++;
  29. 			}
  30. 		}
  31. 		return count;
  32. 	}
  33. 	else
  34. 	{
  35. 		return -1; // -1 dipakai sebagai substitut dari null
  36. 	}
  37. }
  38.  
  39. string intToBin(int angka)
  40. {
  41. 	string out {};
  42. 	int sisa {0};
  43.  
  44. 	while (angka != 0)
  45. 	{
  46. 		sisa = angka % 2;
  47. 		angka /= 2;
  48. 		out.append(1, sisa + '0');
  49. 	}
  50.  
  51. 	return out;
  52. }
Success #stdin #stdout 0s 5308KB
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stdin
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Standard input is empty
stdout
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hitungNomorBit(13, 0): 1
hitungNomorBit(13, 1): 3
hitungNomorBit(13, 2): -1
hitungNomorBit(128, 0): 7
hitungNomorBit(128, 1): 1
https://ideone.com/UUsSMc
language:
C++ (gcc 8.3)
created:
7 days ago
visibility:
public

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