Deck of Cards

8a)

typedef struct
{
    char rank, suit;
}card_t;

int main(void)
{
    card_t deck[52];
    return 0;
}

8b)

void initDeck(card_t deck[])
{
    char suit[] = {'C', 'D', 'H', 'S'};
    char rank[] = {'2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K', 'A'};
    int i, j, k = 0;

    for(i = 0; i < 4; i++)
    {
        for(j = 0; j < 13; j++)
        {
            deck[k].rank = rank[j];
            deck[k].suit = suit[i];
            k++;
        }
    }
}

void printDeck(card_t deck[])
{
    int i = 0;

    while(i < 52)
    {
        printf("%c%c ", deck[i].suit, deck[i].rank);
        i++;

        if(i%12 == 0)
            printf("\n");
    }
}

8c)

void shuffleDeck(card_t deck[])
{
    int i;
    int rnum, temp;
    srand(time(NULL));

    for(i = 0; i < 52; i++)
    {
        rnum = rand()%52;

        /* Swap */
        temp = deck[i];
        deck[i] = deck[rnum];
        deck[rnum] = temp;
    }
}

8d)

int computePoints(card_t deck[])
{
    int i, points = 0;
    int suit[4] = {0}; //Order of C, D, H, S

    for(i = 0; i < 13; i++)
    {
        switch(deck[i].suit)
        {
            case 'C':
                suit[0]++;
                break;

            case 'D':
                suit[1]++;
                break;

            case 'H':
                suit[2]++;
                break;

            case 'S':
                suit[3]++;
                break;
        }
    }

    for(i = 0; i < 4; i++)
    {
        if(suit[i] == 0)
            points += 3;
        else if(suit[i] == 1)
            points += 2;
        else if(suit[i] == 2)
            points += 1;
    }

    return points;
}