python/C++课程/第十四课位运算训练精讲/p164_2.cpp

#include<iostream>
using namespace std;
int main()
{
	int n = 0, x;
	cin >> x;
	for (n = 0; x != 0; x &= x - 1)
		n++;
	cout << n;
	return 0;
}