main()
{
 int x,num,y;
 int bin[20];
 clrscr();
 printf("Enter the number");
 scanf("%d",&num);
 y=0;
 while(num>0)
 {
  x=num%2;
  bin[y]=x;
  num=num/2;
  y++;
 }
 y--;
 for(  ;y<=0;y--)
  printf("%d",bin[y]);

   getch();
}