Using realloc to resize a dynamic array

Question

I tried to extend my ful list of players.

When I use the realloc function, it save my player except the last. I mean that if I had 4 players in my array and I tried to extend my array to 7 I got a new array in size 7 and just 3 players.

This is part of the function:

void initializeListForTree(Player** players, int listSize)
{
    int formulaSize = bla bla bla.....
    players = (Player **)realloc(players, sizeof(Player *)*formulaSize);
    if (!players)
    {
        printf("memory allocation failed\n");
    }
}

Answer 1

More something like:

void initializeListForTree(Player*** players, int listSize)
{
int formulaSize = bla bla bla.....
void *p = realloc(*players, sizeof(Player *)*formulaSize);

  if (!p) {
      printf("memory allocation failed\n");
  }
  else {
    *players = p;
  }
}

and at the call site

Player **playerslist = NULL;   

initializeListForTree(&playerslist, 1);
 ...
initializeListForTree(&playerslist, 2);
 etc..

This, of course, only if your type is a pointer to a list of pointers.