用位运算来进制转换

所有的进制转换

http://jingyan.baidu.com/article/495ba84109665338b30ede98.html

 

              //方法二   用位运算来进制转换
#include<stdio.h>
int main( )
{
        intn;
        while(scanf("%d",&n)!=EOF)
        {
                inti,a[100]={0};
                for(i=0;n>>1||n==1;n>>=1,i++)
                {
                        if(n&1)
                           a[i]=1;
                   else
                           a[i]=0;
                }
                while(i>0)
                        printf("%d",a[--i]);
                printf("\n");
        }
        return 0;
}

 

来自<http://acm.hdu.edu.cn/discuss/problem/post/reply.php?postid=6991&messageid=1&deep=0>