#include <stdio.h>

/**
 * nrpn - not quite rpn.
 */
int
main (int argc, char *argv[])
{
  char ch;
  int i;
  int done = 0;

  while (! done)
    {
      i = 0;
      if ((scanf (" +%n", &i) != EOF) && (i >= 1))
        {
          printf ("Ooh, I read a + sign.");
        }
      else if (scanf ("%d", &i))
        {
          printf ("Ooh, I read the number %d.\n", i);
        }
      else
        {
          ch = getchar();
          printf ("I don't know what to do with '%c'\n", ch);
        }
    } // while

  return 0;
} // main