#include <string.h>
#include <dos.h>
#include <stdio.h>

int main ()
  {
  char far *int21;
  char far *bufend;
  unsigned seg,ofs;

  printf ("REDIRSHW.EXE (C) 1992 David Woodhouse\n"
	"Shows redirections caught by REDIR.EXE\n");

  int21=(char far *)getvect(0x21);

  if (strcmp(int21-6,(char far *)"(C)DW"))
    {
    printf ("Error: REDIR.EXE not first in INT 21 chain.\n");
    exit (1);
    }
  else
    {
    seg=FP_SEG(int21);
    ofs=*(unsigned far *)(int21-10);
    bufend=(char far *)MK_FP(seg,*(int far *)(int21-8));
    int21=MK_FP(seg,ofs);

    while (int21<bufend)
      {
      int21+=printf("%Fs ",int21);
      int21+=printf("%Fs ",int21);
      int21+=printf("%Fs\n",int21);
      }
    }
  }