/*-------------------------------------------------------------------*/
/* testpipedup.c                                                     */
/* The pipe and dup system calls.                                    */
/*-------------------------------------------------------------------*/

#include <stdio.h>
#include <unistd.h>

int main(int argc, char *argv[])
{
   int piPipeFd[2];
   int iProducerPid;
   int iConsumerPid;
   int iPipeStatus;

   iPipeStatus = pipe(piPipeFd);

   iProducerPid = fork();  /* Fork a producer */

   if (iProducerPid == 0)
   {
      /* Producer */
      char pcBuffer[] = "somedata";
      close(piPipeFd[0]);
      close(1);
      dup(piPipeFd[1]);
      close(piPipeFd[1]);
      printf("%s", pcBuffer);
      fflush(stdout);
      _exit(0);
   }

   iConsumerPid = fork();  /* Fork a consumer. */

   if (iConsumerPid == 0)
   {
      /* Consumer */
      char pcBuffer[9];
      close(piPipeFd[1]);
      close(0);
      dup(piPipeFd[0]);
      close(piPipeFd[0]);
      scanf("%s", pcBuffer);
      printf("Consumed %s.\n", pcBuffer);
      fflush(stdout);
      _exit(0);
   }

   close(piPipeFd[0]);
   close(piPipeFd[1]);
   return 0;
}

/* Sample execution:

$ testpipedup
Consumed somedata.
$

*/