/*
 * How does my program know if <^D> was typed
 * on the keyboard?
 */

#include <stdio.h>

char buff[255];
char *end;

main ()
{
   printf ("Yes master?\n");
   while (1) {
      if ((end = fgets(buff, 255, stdin)) == 0) {
        printf ("end == %d\n", end);
        break;
      }
      printf ("end == %d\n", end);
   }
}