Thread: using a pointer to an integer in a for loop

i have the following function.

Code:

void move_deck(int cards_in_play, Card deck[])
{
    int i, j;

    do
    {
        for ( i = 0, j = cards_in_play ; j < 52 ; i++, j++ )
        {
            deck[i] = deck[j];
        }
        for ( ; i < 52 ; i++ )
        {
            deck[i].in_play = true;
        }
    } while (deck[0].in_play);
    print_deck(deck);
}

as it stands it works fine however it would be useful to have cards_in_play as a pointer but if i use the pointer in the for loop i get the usual warning about integer being turned into a pointer without cast,

can i use a pointer as one of the controling paramaters of a for loop or do i have to assign the value its pointing at to another variable first