Need help with deleting child´s parent and child subprocess

1. The problem statement, all variables and given/known data:
   I need to make an program that in a loop creates one parent and five children with fork(). The problem i'm trying to solve is how to delete the parent and child of the child�s process.

2. Relevant commands, code, scripts, algorithms:
   fork() and wait(), waitpid(). I�m using Mac OS X 10.6.8.

3. The attempts at a solution (include all code and scripts):

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

int main(void) {
    int status;
    pid_t pid[5];
    pid_t w;
    int i, j;
    pid[0] = fork();
    for (i = 0;i < 6;i++) {
        if (pid < 0) {
            printf("Error at level: %d\n", i);
        } else if (pid == 0) {
            printf("child created: %d\n", i);
        } else {
            printf("parent created: %d\n", i);
            if ((i + 1) < 6) {
                pid[i + 1] = fork();
                printf("fork level: %d\n", i);
                w = waitpid(pid[i + 1], &status, 0);
                printf("pid %d deleted \n", pid[i + 1]);
            } else {
                break;
            }
        }
        //pid[i + 1] = fork();
    }
    for (j = 0;j < 6;j++) {
        pid[j] = wait(&status);
        printf("process: %d terminated!\n", j);
    }
    
    return 0;
}

4. H�gskolan p� Gotland (Gotland University), Visby (Gotland), Sweden, Magnus Wessberg, and TPV714 (i was unable to post the url because i�ve not posted five times)