Unix System Calls - fork, getpid, getppid

// Unix system calls

// fork, getpid, getppid

#include<stdio.h>

#include<string.h>

#include<sys/types.h>

#include<unistd.h>

void main()

{

          pid_t pid;

          pid=fork();

         

          if(pid == -1)

                   printf("\n Error in creating process ");

          else if(pid == 0)

          {

                   printf("\nExecuting in child process");

                   printf("\n child process pid=%d ", getpid());

                   printf("\n parent process pid=%d ", getppid());

          }

          else

                   printf("\nExecuting in parent process, pid=%d \n", getppid());

}