Simple deck of cards example

deck.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <time.h>

/* Lookup array for card suits */
const char *card_suits[] = {
    "hearts",
    "diamonds",
    "spades",
    "clubs"
};

/* Lookup array for card numbers */
const char *card_numbers[] = {
    "ace",
    "two",
    "three",
    "four",
    "five",
    "six",
    "seven",
    "eight",
    "nine",
    "ten",
    "jack",
    "queen",
    "king",
};

/* Array of char[32], which will hold card labels */
char *card_labels[52][32];

/* Compare function that returns random negative/positive */
int random_compare(const void *A, const void *B)
{
    return rand() - INT_MAX / 2;
}

/* Initialize deck of cards */
void init_deck(int *deck_of_cards)
{
    int i;
    for (i = 0; i < 52; i++) {
        deck_of_cards[i] = i;
    }
    
    qsort(deck_of_cards, 52, sizeof(int), &random_compare);
}

/* Init card labels */
void init_labels()
{
    int a, b, i, l;
    char *ptr;
    
    i = 0;
    for (a = 0; a < 4; a++) {
        for (b = 0; b < 13; b++) {
            ptr = (char *)&card_labels[i];
            l = strlen(card_numbers[b]);
            
            strcpy(ptr, card_numbers[b]);
            ptr += l;
            strcpy(ptr, " of ");
            ptr += 4;
            strcpy(ptr, card_suits[a]);
            
            i++;
        }
    }
}

int main(void)
{
    int i;
    int card;
    
    /* Array that holds deck of cards */
    int deck[52];
    
    /* Init random number generator */
    srand(time(NULL));
    
    /* Init card labels */
    init_labels();
    
    /* Init deck of cards */
    init_deck((int *)&deck);
    
    /* "Draw" every card from deck */
    for (i = 0; i < 52; i++) {
        card = deck[i];
        printf("%s\n", (char *)card_labels[card]);
    }
    
    return 0;
}