写一个函数返回参数二进制中 1 的个数

#define _crt_secure_no_warnings 1
#include<stdio.h>
#include<string.h>
#include<stdlib.h>

int count_one_bits(unsigned int value) //不需要判断%2
{
	int count = 0;
	while (value != 0)
	{
		value = value & (value - 1);
		count++;
	}
	return count;
}

int count_one_bits(unsigned int value)  //一定要判断%2
{
	int count = 0;
	while (value != 0)
	{
		if (value % 2 == 1)
		{
			count++;
		}
		//value = value >> 1;
		value = value / 2;
	}
	return count;
}

int main()
{
	int value = 0;
	printf("input the number :");
	scanf("%d", &value);
	printf("one binary is : %d\n", count_one_bits(value));
	system("pause");
	return 0;
}