题解 | #求int型正整数在内存中存储时1的个数#

//https://www.nowcoder.com/practice/440f16e490a0404786865e99c6ad91c9?tpId=37&tqId=21238&rp=1&ru=/exam/oj/ta&qru=/exam/oj/ta&sourceUrl=%2Fexam%2Foj%2Fta%3FtpId%3D37&difficulty=undefined&judgeStatus=undefined&tags=&title=

#include <iostream>
#include <bitset>

using namespace std;

int main() {
    int n = 0;

    while(cin >> n){
        bitset<32> bs(n);
        cout << bs.count();
    }
}