Process/childrens

Hi, i want to create 3children processes from one "Father process" but when i test my code i see on the Shell that the "Father" create children1, children1 create children2 and children2 create children3, and i want is to create all the 3children from "Father" process, anyone can help?

Code:

---

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
#include <sys/types.h>

int main(){
       
        int filho1,filho2,filho3;

        filho1 = fork();
        if (filho1 == 0){
                printf("[%d] Sou o filho1!\n", getpid());
                printf("[%d] O meu pai é: %d\n", getpid(), getppid());
        }

        filho2 = fork();
        if (filho2 == 0){
                printf("[%d] Sou o filho2!\n", getpid());
                printf("[%d] O meu pai é: %d\n", getpid(), getppid());
        }

        filho3 = fork();
        if (filho3 == 0){
                printf("[%d] Sou o filho3!\n", getpid());
                printf("[%d] O meu pai é: %d\n", getpid(), getppid());
        }

        return 0;
}

---

Each child needs to stop when it reaches the end of it's if ( pid == 0 ) block.

How i can do a process that execute the shell command "ps u" every 2secs ? Its with "exec" functions? Anyone can show me how to do that?

if ( fork() == 0 ) execl()
Plus some manual reading, and maybe a board search, since this has been done before.

Perhaps even post on the linux board next time. fork() isn't supported on windows.