OS Orphan Process C Program

Operating Systems Lab Manual / OS Orphan Process C Program

Program Name: Write a C program Orphan process in operating system.

Theory

A process whose parent process has crashes / finished /Completed execution / terminated and 
do not exists in the process table is called as Orphan process.

i.e

	First Terminated	Last Terminated
Zombie Process	Child process	Parent Process
Orphan Process	Parent Process	Child process

Program Code

#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
int main()
{
int pid = fork();
if (pid > 0) 
printf("Parent process-ID : %d\n\n", getpid());

else if (pid == 0) 
{
printf("\nParent -ID: %d \t Child process-ID: %d \n",getppid(), getpid());
sleep(10);
printf("\nParent -ID: %d \t Child process-ID: %d \n",getppid(), getpid());
}
else 
printf("Failed to create child process");
return 0;
}

Input:

Output:
Parent process-ID : 4483

Parent -ID: 4483 	 Child process-ID: 4484 
Parent -ID: 1 	 Child process-ID: 4484

Home Back