题解 | #求int型正整数在内存中存储时1的个数#

#include <cstdio>

int main()
{
    int n1;
    while (scanf("%d",&n1)!=-1)
    {
        int counter=0;
        while (n1)
        {
            if(n1%2==1) ++counter;
            n1=n1>>1;
        }
        printf("%d\n",counter);
    }
    
}