OTAC;SIN;UNUK

#include<iostream>
#include<stdio.h>
#include<time.h>
#include<stdlib.h>
#include<unistd.h>
#include<sys/shm.h>
#include<signal.h>
#include<sys/ipc.h>
#include<sys/wait.h>
#include<sys/types.h>
#include<unistd.h>
#include<pthread.h>

using namespace std;
void otac(int i)
{
    printf("ja sam otac \n");
}

void sin(int i)
{

    printf("ja sam sin \n");

}

void unuk(int i)
{
    printf("ja sam unuk \n");

}

int main()
{
    int i;
    switch (fork())
    {
        case -1: cout<<"greska tijeko stvaranja"<<endl;
            exit(0);

        case 0:
                otac(i);
                switch(fork())
                {
                    case -1: cout<<"greska!"<<endl;

                    case 0: sin(i);

                    switch(fork())
                    {
                    case 0: unuk(i);
                    case -1: break;
                    exit(0);
                    }
                    exit(0);
                    default: break;

                }

                exit(0);
        default:break;
    }
wait(NULL);
sleep(6);
}