写一个函数返回参数值为1的个数 。如15 00001111 有4个1

#include <stdio.h>

int count_one_bits(unsigned int value)
{
int count = 0;
while(value)
{
if( value%2 == 1)
count++;
value = value/2;
}
printf("%d\n",count);
return 0;
}

int main()
{
unsigned int n;
scanf("%d",&n);
count_one_bits(n);
return 0;
}

#include <stdio.h>

int count_one_bits(unsigned int value)
{
int count = 0;
while(value)
{
count ++;
value = value & (value - 1) ;
}
printf("%d\n",count);
return 0;
}

int main()
{
unsigned int n;
scanf("%d",&n);
count_one_bits(n);
return 0;
}