I wanted to know why the removal processes in threads have two pointers set to the next
As this example given
void
remove (celula *p)
{
celula *lixo;
lixo = p->prox;
p->prox = lixo->prox;
free (lixo);
}
Because there's always something like "p-> prox = junk-> prox;"? Could you please explain to me?
Write
p->prox = lixo->prox;
is the same as
p->prox = p->prox->prox;
You do this to remove the item from the middle.
Ex: imagine the list 4 5 6
The 4 is the p and the 5 is the lixo
The lixo->prox is the 6
When doing p->prox = lixo->prox I'm talking about 4->prox = 6 , so I can remove 5 now that list will not break.