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

int main() {
  pid_t pid1, pid2, finished_pid;

  printf("parent started\n");

  pid1 = fork();
  if (pid1 < 0) {
    printf("fork failed\n");
  } else if (!pid1) { // child

    printf("this is child 1\n");
    sleep(1);
    printf("child 1 finished\n");

  } else { // parent
    pid2 = fork();
    if (pid2 < 0) {
      printf("fork failed\n");
    } else if (!pid2) { // child

      // asdfasdf

      printf("this is child 2\n");
      sleep(5);
      printf("child 2 finished\n");

    } else { // parent

      finished_pid = waitpid(pid2, NULL, 0); // reap child 2
      printf("reaped child 2 (pid %d)\n", finished_pid);

      finished_pid = waitpid(pid1, NULL, 0); // reap child 1
      printf("reaped child 1 (pid %d)\n", finished_pid);


      printf("parent finished\n");
      
    }
  }

  return 0;
}