/* cards.c - uses a structure that represents a playing card
   YOUR NAME(S), 8/22/2012 */

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

/* define the card structure and a nickname for it */
struct card {
    char suit;
    int face;
};
typedef struct card Card;

/* prototypes for functions that YOU WILL DEFINE BELOW main */
void printCard(Card c);
void printCards(Card cards[], int n);
int cmpCard(Card *c1, Card *c2);

/* define array and a utility function to simplify lookups */
char *faces[] = {"", "", "deuce", "three", "four", "five", "six",
    "seven", "eight", "nine", "ten", "jack", "queen", "king", "ace"};
char *suit(char s) {
    if (s == 'C') return "Clubs";
    if (s == 'D') return "Diamonds";
    if (s == 'H') return "Hearts";
    return "Spades";
}

/* DO NOT CHANGE main */
int main(void) {
    /* declare proper function pointer to pass to qsort */
    int (*cmpFunc)(const void *, const void *);

    /* create and initialize an array of 5 cards */
    Card cards[] = { {'S', 14}, {'H', 12}, {'C', 7},
                     {'D', 7}, {'S', 11} };

    /* test printCard by itself */
    printf("printing third card: ");
    printCard(cards[2]);

    /* test printCards now for first two cards, then whole array */
    printf("\nprinting first two cards:\n");
    printCards(cards, 2);
    printf("\nprinting all cards, unsorted:\n");
    printCards(cards, 5);

    /* depend on cmpCard to use qsort on array, then print again */
    cmpFunc = (void *)cmpCard;
    qsort(cards, 5, sizeof(Card), cmpFunc);
    printf("\nprinting all cards, sorted:\n");
    printCards(cards, 5);

    return 0;
}

/* COMPLETE THE FUNCTIONS BELOW */

/* prints c neatly, followed by a newline */
void printCard(Card c) {
    /* IMPLEMENT */
}

/* neatly prints first n cards on separate lines */
void printCards(Card cards[], int n) {
    /* IMPLEMENT */
}

/* returns value less than 0 if c1 face is less than c2 face,
   0 if faces of c1 and c2 are equal, or
   greater than 0 if c1 face is greater than c2 face.
   CAREFUL: both c1 and c2 are pointers. */
int cmpCard(Card *c1, Card *c2) {
    return 0;
    /* IMPLEMENT AND REPLACE THE RETURN STATEMENT ABOVE */
}