#include <stdio.h>
#include <conio.h>
#include <dos.h>
#include <process.h>

int main(int argc, char *argv[])
{
   unsigned int t_delay, Data;
   int tenths_sec;

   clrscr();

   if(argc != 3)
   {
      printf("Incorrect number of args\n");
      exit(-1);
   }
   if(sscanf(argv[1],"%d", &tenths_sec)!=1)
   {
      printf("Time scanf failed.\n");
      exit(-2);
   }
   if (sscanf(argv[2],"%x", &Data) != 1)
   {
      printf("Parallel port scanf failed.\n");
      exit(-3);
   }
   t_delay = tenths_sec * 100;
   outportb(Data, 0x0a); /* operate the relay */
   delay(t_delay);
   outportb(Data, 0x00); /* release it */
   exit(0);
}