fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	char testchar = 0x01;
  6.  
  7. 	int bitsSet = 0;
  8. 	int bitNum = 0;
  9. 	int pos = 1;
  10.  
  11. 	for (unsigned char c = 0x80; c != 0x00; c = c >> 1)
  12. 	{
  13. 		if (c & testchar)
  14. 		{
  15.             bitsSet++;
  16.             bitNum = pos;
  17. 		}
  18.  
  19.         pos++;
  20. 	}
  21. 	cout << "Bits set [" << bitsSet << "] bitNum [" << bitNum << "]" << endl;
  22. 	return 0;
  23. }
Success #stdin #stdout 0.01s 5300KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Bits set [1] bitNum [8]
https://ideone.com/YCdsQ4
language:
C++14 (gcc 8.3)
created:
4 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!