6ab_orphan.c

#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<sys/types.h>
int main() {
pid_t my_pid, parent_pid, child_pid;
child_pid = fork();
if (child_pid < 0) {
printf("\nFork failed, exiting!!\n");
exit(1);
}
if (child_pid == 0) {
// This is the child process
printf("\n[CHILD] This is the child process.\n");
my_pid = getpid();
parent_pid = getppid();
printf("[CHILD] My pid is %d\n", my_pid);
printf("[CHILD] My parent's pid is %d\n", parent_pid);
printf("[CHILD] Sleeping for 10 seconds\n");
sleep(10);
printf("\n[CHILD] My parent has ended, so I am an orphan process, adopted by init process\n");
} else {
// This is the parent process part
printf("\n[PARENT] This is the parent process.\n");
my_pid = getpid();
parent_pid = getppid();
printf("[PARENT] My pid is %d\n", my_pid);
printf("[PARENT] My parent's pid is %d\n", parent_pid);
printf("[PARENT] Exiting\n");
exit(0);
}
return 0;
}