二进制与八进制之间的相互转换

八进制转二进制（中间借助十进制）

#include<stdio.h>

#include<math.h>

intmain()

{

    int n,now=0,i,remainder;

         scanf("%d",&n);

 

         //八进制转十进制

    for(i=0;;i++)

         {

                   remainder=n%10;

                   now=now+remainder*pow(8,i);

                   if(n/10==0)

                   {

                            //printf("%d\n",now);

                            break;

                   }

                   n=