题解 | 求int型正整数在内存中存储时1的个数

#include <iostream>

using namespace std;

int main(){
    int n;
    cin>>n;
    int count = 0;
    while(n>0){
        if(n&1){
            count++;
        }
        n = n>>1;
    }
    cout<<count<<endl;
}