Programming

int main(void)
{
    int n;

    for(n=0; n<10; n++)
    {
        pid_t pid=fork();
        if(pid < 0)
        {
            perror("Couldn't fork");
        }
        else if(pid > 0) // parent code
        {
            fprintf(stderr, "child %d = pid %d\n", n, pid);
        }
        else if(pid == 0) // child code
        {
            // Child will print different numbers depending on what child it is
            fprintf(stderr, "I am child %d\n", n);

            switch(n)
            {
            case 0:
                    fprintf(stderr, "Stuff only child 0 does\n");
                    break;
            case 1:
                    fprintf(stderr, "stuff only child 1 does\n");
                    break;
            default:
                    fprintf(stderr, "stuff any other child does\n");
                    break;
            }
            exit(0);
        }
    }

    for(n=0; n<10; n++)
    {
       pid_t pid;
       int status;
       wait(&status);
       fprintf(stderr, "pid %d returned %d\n", WEXITSTATUS(status));
    }
}

pid1=fork(); //first child has pid=0
if pid1>0 {
    pid2=fork(); // second child has pid=0
}

if first child {
 print hi1
}
if second child {
  print hi2
}