/*************************************************************************

     > File Name: 08_NumOf1InBinary.c

     > Author: Juntaran

     > Mail: JuntaranMail@gmail.com

     > Created Time: 2016年08月29日 星期一 20时40分15秒

  ************************************************************************/

 #include <stdio.h>

 int NumberOf1_1(int n)

 {

     int count = ;

     int flag = ;

     while (flag < n)

     {

         if (n & flag)

             count ++;

         flag = flag << ;

     }

     return count;

 }

 int NumberOf1_2(int n)

 {

     int count = ;

     while (n)

     {

         ++ count;

         n = (n - ) & n;

     }

     return count;

 }

 int main()

 {

     int ret1 = ;

     int ret2 = ;

     int n = ;

     ret1 = NumberOf1_1(n);

     ret2 = NumberOf1_2(n);

     printf("ret1 is %d\n", ret1);

     printf("ret2 is %d\n", ret2);

 }