c语言实现谷歌笔试题：返回参数二进制中1的个数

#include <stdio.h>int count_one_bits(int num){int count = 0;while(num){count++;num = num&(num-1);}return count;}int main(){int num = -1;printf("count = %d\n", count_one_bits(num));return 0;}