bit operation to check even

bit_op_to_check_even.c

/*
 ** 右移计算值为1的位的个数
 ** 接收一个无符号参数，避免右移歧义
 */
int
count_one_bits(unsigned value)
{
    int ones;
    for (ones = 0; value != 0; value = value >> 1) {
        printf("%d\n", value);
        if (value % 2 != 0) {
            ones+=1;
        }
    }
    return ones;
}