// Ex. 2
card* get_hand(void) {
card* hand = malloc(sizeof(card)*5);
assert(hand != NULL);
char cards[5][3];
puts("Please give me five cards, one at a time, separated by carriage return. E.g. 'TS' or '3H'");
for(int i = 0; i < 5; ++i) {
if((fgets(cards[i], 10, stdin)) == NULL) {
puts("Incomplete data!");
return NULL;
}
hand[i] = match_card(cards[i]);
}
return hand;
}
int main(int argc, char *argv[]){
char *ep;
u_long temp, trials;
struct state *gp;
struct state game;
/* structures to hold the stats */
struct stats b_before;
struct stats b_after;
struct stats b_both;
struct stats m_card, m_dice;
struct stats game_stats;
struct card deck[DECKS*CARDS*SUITS];
int i;
int card_index = 0;
float outcome;
int die_total;
gp = &game;
if (argc != 2)
usage();
temp = strtoul(argv[1], &ep, 10);
if (*argv[1] == '\0'|| *ep != '\0'){
fprintf(stderr, "%s - not a number\n", argv[1]);
usage();
}
if (argv[1][0] == '-'){
fprintf(stderr, "%s - no negative numbers\n", argv[1]);
usage();
}
if (( errno == ERANGE && temp == ULONG_MAX ) && (temp > 1)){
fprintf(stderr, "%s - value out of range\n", argv[1]);
usage();
}
trials = temp;
/* seed the random number generator */
srand(time(NULL));
/* initialize the deck */
init_deck(deck);
/* shuffle the cards */
shuffle(deck);
/* initialize the statistics structs */
init_stats(&b_before);
init_stats(&b_after);
init_stats(&b_both);
init_stats(&m_card);
init_stats(&m_dice);
init_stats(&game_stats);
/* run the simulations */
for (i = 0 ; i < trials ; i++){
/* initialize the game */
game.die_1 = rand()%6 + 1;
game.die_2 = rand()%6 + 1;
die_total = game.die_1 + game.die_2;
game.before_card = deck[card_index];
game.after_card = deck[card_index+1];
card_index+=2;
/* beat before */
if (die_total == 12)
outcome = 4.0;
else if ( die_total > game.before_card.value )
outcome = 1.0;
else if ( die_total < game.before_card.value )
outcome = -1.0;
else
outcome = 0.0;
inc_update_stats(&b_before, outcome, i+1);
inc_update_stats(&game_stats, outcome, i+1);
/* beat after */
if (die_total == 12)
outcome = 4.0;
else if ( die_total > game.after_card.value )
outcome = 1.0;
else if ( die_total < game.after_card.value )
outcome = -1.0;
else
outcome = 0.0;
inc_update_stats(&b_after, outcome, i+1);
inc_update_stats(&game_stats, outcome, i+1);
/* beat both */
if (die_total == 12)
outcome = 6.0;
else if ( (die_total > game.after_card.value) &&
(die_total > game.before_card.value) )
outcome = 3.0;
else if ( (die_total == game.after_card.value) &&
(die_total == game.before_card.value))
outcome = 0.0;
else
outcome = -1.0;
inc_update_stats(&b_both, outcome, i+1);
inc_update_stats(&game_stats, outcome, i+1);
/* match card */
outcome = match_card(gp);
inc_update_stats(&m_card, outcome, i+1);
inc_update_stats(&game_stats, outcome, i+1);
/* match dice */
outcome = match_dice(gp);
inc_update_stats(&m_dice, outcome, i+1);
inc_update_stats(&game_stats, outcome, i+1);
if(card_index > (DECKS*SUITS*CARDS - 52)){
card_index = 0;
shuffle(deck);
}
}
/* finalize the standard deviations */
b_before.stddev = sqrt(b_before.stddev/(trials-1));
b_after.stddev = sqrt(b_after.stddev/(trials-1));
b_both.stddev = sqrt(b_both.stddev/(trials-1));
m_card.stddev = sqrt(m_card.stddev/(trials-1));
m_dice.stddev = sqrt(m_dice.stddev/(trials-1));
game_stats.stddev = sqrt(game_stats.stddev/(trials-1));
/* Print the statistics of the each game's square */
printf("Beat Before:\n");
print_stats(&b_before);
printf("Beat After:\n");
print_stats(&b_after);
printf("Beat Both:\n");
print_stats(&b_both);
printf("Match Card:\n");
print_stats(&m_card);
printf("Match Dice:\n");
print_stats(&m_dice);
/* Print the game's overall EV */
printf("Game Statistics:\n");
print_stats(&game_stats);
return 0;
}