writing to stdin

[Daniel Gerardo Aliaga]

Is there any way for a process to write a string to its stdin, such that it 
can later be read again ?

For example, the following code does the job on SunOS:

#include <stdio.h>
#include <sys/termios.h>

main()
{
  static char msge[256] = "hello world";
  char   buf[256];
  int    i;

  printf("prompt> ");
  fflush(stdout);

  for (i=0; i<strlen(msge); i++)
     ioctl(0, TIOCSTI, &msge[i]);

  gets(buf);

  printf("input was: %s\n",buf);
}


But we would like to do the same on HPUX or generically on System V.

Thanks in advance.
 XXXXXXXXXXXXXXX       XXXXXXXXXXXXXXXXXX      Daniel G. Aliaga '91
          XXX         XXX     XXXXX            Brown University
        XXXXXXXXXXXXXXXXXX 
         XXXXXXXXXXXXXXXXX		 "Real men write self modifying code"