#include <unistd.h>
#include <stdio.h>


int main()
{

        pid_t pid, pid1, father;
        printf("i am in the main program \n\n");

        pid=fork();

        if(pid==0) /*i am the child*/
        {
                printf("\n------------------------------------------------");
                printf("\n i am the child since my pid is 0\n");
                pid1=getpid();
                father=getppid();
                printf("\ngetpid():=%d",pid1);
                printf("\nfork() returned my pid as:=%d", pid);
                printf("\ngetppid():=%d\n\n\n", father);
        }

        else /*am the father*/
        {
                printf("\n------------------------------------------------");
                printf("\nI am the father\n");
                pid1=getpid();
                father=getppid();
                printf("\ngetpid():=%d", pid1);
                printf("\nfork() returned my pid as:=%d",pid);
                printf("\ngetppid():=%d\n\n\n\n",father);

        }

}


/* OUTPUT



i am in the main program


------------------------------------------------
I am the father

getpid():=1030
fork() returned my pid as:=1031
getppid():=683




------------------------------------------------
I am the child since my pid is 0

getpid():=1031
fork() returned my pid as:=0
getppid():=1


*/