#include <stdio.h>
#include <conio.h>
#include <iostream.h>

 main()
{
  int x,i,n,a[100];

   cout<<"Nhap vao so nguyen : ";
   cin>>x;
   cout<<"\n So "<<x<<" chuyen sang co so 2 la : ";
   n=0;
   while (x>0)
   {
     a[n]=x%2;
      x=x/2;
      n=n+1;
   }
   for (int i=n;i>=0;i--)
     cout<<a[i];
   getch();
}