/* p12.c */

#include <stdio.h>

main()
{
   unsigned char *buff;
   int  len = 0;
   int  iter = 0;

   buff = malloc(1024);
   if (buff == 0)
      exit(1);

   while ((len = fread(buff, 1, 1024, stdin)) != 0)
   {
      fwrite(buff, 1, len, stdout);
      fprintf(stderr, "%d %d \n", iter, len);
      iter += 1;
  }
}