C :

#include <stdio.h>

int main() {
	int n;
	int a[10];
	scanf("%d", &n);
	int temp = n;
	int i = 0;
	int k = 0;
	while (temp > 0) {
		if (temp & 1) {
			a[k] = i;
			k++;
		}
		temp >>= 1;
		i++;
	}
	for (int y = k - 1; y >= 0; y--) {
		printf("%d ", a[y]);
	}
	return 0;
}

C++ :

#include <bits/stdc++.h>
using namespace std;
#define int long long

string tostring(int n) {
	string s;
	while (n) {
		int g = n & 1;
		s += g + '0';
		n >>= 1;
	}
//	reverse(s.begin(), s.end());
	return s;
}

signed main() {
	int n;
	cin >> n;
	string s = tostring(n);
	int l = s.size();
	for (int i = l - 1; i >= 0; i--) {
		if (s[i] == '1')
			cout << i << ' ';
	}
//	cout << s;
	return 0;
}