#include <stdio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdlib.h>
int main (void){
        pid_t pid;
        pid_t mychild;
        pid_t parentid;
        int first=0,second=1;
        int third,num;
        printf("Enter The number for Fibonacci sequence:-");
        scanf("%d",&num);
        pid=fork();
        if (pid == 0){
                printf("\n The parent process id is: %d\n ",getppid());
                do{
                       printf("%d,",first);
                       third=first+second;
                       first=second;
                       second=third;
                }while(first <= num);
                printf("\n");
        }
        else if (pid > 0){
                mychild=wait (NULL);
                printf ("\nChild Process ID is : %d",mychild);
        }
return 0;
}