Stuck with '\b'

I want to print 0 to 9 in an interval of 1 sec between each number AND the previous number must be overwritten.

i.e. The numbers should be printed at the same location on the screen. But this is not working. Here is my code:

Code:

#include <iostream>
#include <unistd.h>

using namespace std;

int main()
{
  int i = 0;
  for(i=0; i<10; i++)
    {
      cout << i;
      sleep(1);
      cout << '\b';
    }

  return 0;
}

What is the output?

The program is waiting for 10 secs and exits without any output.

try this:

cout << i << flush;

Thanks magos... It works.

this also works:

Code:

#include <iostream>
#include <unistd.h>

using namespace std;

int main()
{
  int i = 0;
  for(i=0; i<10; i++)
    {
      cout <<"\b \b"; //backspace, space, backspace
      cout << i;
      sleep(1);
    }

  return 0;
}