Thread: Where does the standard output go the following program

Here is the input file for page.c

[cdalten@localhost oakland]$ more tri.c

Code:

#include <stdio.h>

int main(void)
{
  printf("What's going on here??!\n"); 
  return 0;
}

and here is page.c itself.

[cdalten@localhost oakland]$ more page.c

Code:

#include <stdio.h>
#include <stdlib.h>
#include <sys/wait.h>

#define PAGER "${PAGER:~more}"
int main(int argc, char *argv[])
{
  char line[BUFSIZ];
  FILE *fpin, *fpout;

  if(argc !=2) {
    fprintf(stderr, "not enough args\n");
    exit(1);
  }

  if((fpin = fopen(argv[1], "r")) == NULL) {
    fprintf(stderr, "fopen error\n");
    exit(1);
  }

  if ((fpout = popen("/bin/more", "w")) == NULL) {
    fprintf(stderr, "popen error\n");
    exit(1);
  }

  while (fgets(line, BUFSIZ, fpin) != NULL) {
    if (fputs(line, fpout) == EOF) {
      fprintf(stderr, "fputs error to pipe\n");
      exit(1);
    }
  }

  if(pclose(fpout) == -1) {
    fprintf(stderr, "pclose error\n");
    exit(1);
  }
  exit(0);
}

When I run it, I get...
[cdalten@localhost oakland]$ gcc -Wall page.c -o page
[cdalten@localhost oakland]$ ./page tri.c
#include <stdio.h>

int main(void)
{
printf("What's going on here??!\n");
return 0;
}
[cdalten@localhost oakland]$

The question is, does fputs() in page.c print the standard output in the parent or the child process?