#include <stdio.h>
int circle(int n,int d);
main()
{
 int num[]={232,27,851},scale[]={2,10,16};
 int i,j;

 for(i=0;i<sizeof(num)/sizeof(num[0]);i++)
  for(j=0;j<sizeof(scale)/sizeof(scale[0]);j++)
   if(circle(num[i],scale[j]))
    printf("%d(%d) is a circle number.\n",num[i],scale[j]);
   else
    printf("%d(%d) is not a circle number.\n",num[i],scale[j]);

 getch();
}

int circle(int n,int d)
{
 int m=n,s=0;

 while(m!=0)
 {
  s=s*d+m%d;              //这是什么意思？
  m=m/d;
 }

 return s==n;
}