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

int *x1[1], *x2[1], y[1], z[1];

void f(int **p) {
  **p = 2;
  *p  = y;
  **p = 3;
  p   = x2;
  *p  = z;
  **p = 4;
  // Fin de f
}

int main(void) {
  int **p, ***q, **r, *s, t;

  p   = x1;
  *p  = &t;
  **p = 1;
  q   = &p;
  r   = p;
  s   = *p;

  printf("%d %d %d %d %d %d \n", ***q, **p, **r, *s, *z, t);

  f(p);

  printf("%d %d %d %d %d %d \n", ***q, **p, **r, *s, *z, t);

  exit(EXIT_SUCCESS);
}