main()
{
   long int bin_no,no;
   int oct_no,oct_p,i,rem,pow2,pow8,inter_oct;
   clrscr();
   printf ("\nEnter the Binary number: -> ");
   scanf("%ld",&bin_no);
   no=bin_no;
   pow8=1;
   oct_no=0;
   while (no>0)
   {
      i=0;
      inter_oct=0;
      pow2=1;
      while (i<=2)
      {
         if (no==0)break;
         rem=no%10;
         inter_oct+=rem*pow2;
         i++;
         pow2*=2;
         no/=10;
      }
      oct_no+=inter_oct*pow8;
      pow8*=10;
   }
   printf ("\nOctal Equivalent for %ld = %d",bin_no,oct_no);
   getch();
}