Three Card Poker Analysis

Here is the code created in the video.

#include 

#include 

#include 

#include 

#include 

#include 

using namespace std;



struct card {

	int r;

	int s;

};



void set_array(void);

int score(int p1, int p2, int p3);

void dealer(int p1, int p2, int p3, int psc, int event_array[]);



int score_array[22100];

card deck[52];



void main()

{

	int i, p1, p2, p3, sc, cat, pairplus_array[6], event_array[4],tot_ante_bonus[6];

	int ante_bonus_pay[] = { 0,0,0,1,4,5 };

	__int64 tot_event_array[6];

	string hand_name[] = { "Three singletons","Pair","Flush","Straight","Three of a kind","Straight flush" };

	string event_name[] = { "Player win","Dealer doesn't qualify","Tie","Dealer win","Player folds" };

	int index = 0;

	double ev = 0;

	for (i = 0; i < 6; i++)

	{

		tot_ante_bonus[i] = 0;

		pairplus_array[i] = 0;

		tot_event_array[i] = 0;

	}

	for (i = 0; i < 51; i++)

	{

		deck[i].r = (int)(i / 4);

		deck[i].s = i % 4;

	}

	set_array();

	for (p1 = 0; p1 <= 49; p1++)

	{

		for (p2 = p1 + 1; p2 <= 50; p2++)

		{

			for (p3 = p2 + 1; p3 <= 51; p3++)

			{

				sc = score_array[index];

				cat = (int)sc / 2197;

				pairplus_array[cat]++;

				dealer(p1, p2, p3, sc, event_array);

				ev = (2.0 * (double)event_array[0] + (double)event_array[1] - 2.0 * (double)event_array[3]) / 18424.0;

				ev += ante_bonus_pay[cat];

				if (ev < -1) // fold

				{

					tot_event_array[4] += 18424;

				}

				else

				{

					for (i = 0; i <= 3; i++)

						tot_event_array[i] += event_array[i];

					tot_ante_bonus[cat]++;

				}

				index++;

			}

		}

	}

	printf("Pairplus Analysis\n");

	for (i = 0; i < 6; i++)

		printf("%s\t%i\n", hand_name[i].c_str(), pairplus_array[i]);

	printf("\nAnte Analysis\n");

	for (i = 0; i <=4; i++)

		printf("%s\t%I64i\t%f\n", event_name[i].c_str(), tot_event_array[i],(double)tot_event_array[i]/22100.0/18424.0);

	double game_ev = (2.0 * (double)tot_event_array[0] + (double)tot_event_array[1] - 2.0 * (double)tot_event_array[3] - (double)tot_event_array[4]) / 22100.0 / 18424.0;

	printf("Game expected value w/o Ante Bonus=\t%f\n",game_ev );

	for (i = 0; i <= 5; i++)

		game_ev += ante_bonus_pay[i] * tot_ante_bonus[i] / 22100.0;

	printf("Game expected value w/ Ante Bonus=\t%f\n", game_ev);



}



void dealer(int p1, int p2, int p3, int psc, int event_array[])

{

	int d1, d2, d3, i,dsc;

	int index = 0;

	for (i = 0; i <= 3; i++)

		event_array[i] = 0;

	for (d1 = 0; d1 <= 49; d1++)

	{

		for (d2 = d1 + 1; d2 <= 50; d2++)

		{

			for (d3 = d2 + 1; d3 <= 51; d3++)

			{

				if ((d1 != p1) && (d1 != p2) && (d1 != p3) && (d2 != p1) && (d2 != p2) && (d2 != p3) && (d3 != p1) && (d3 != p2) && (d3 != p3))

				{

					dsc = score_array[index];

					if (dsc < 1703) // dealer does not qualify

						event_array[1]++;

					else if (psc>dsc)

						event_array[0]++;

					else if (psc < dsc)

						event_array[3]++;

					else

						event_array[2]++;

				}

				index++;

			}

		}

	}



}



void set_array(void)

{

	int p1, p2, p3,sc;

	int index = 0;

	for (p1 = 0; p1 <= 49; p1++)

	{

		for (p2 = p1 + 1; p2 <= 50; p2++)

		{

			for (p3 = p2 + 1; p3 <= 51; p3++)

			{

				sc = score(p1, p2, p3);

				score_array[index] = sc;

				index++;

			}

		}

	}

}



int score(int p1, int p2, int p3)

{

	int flush, straight;

	card hand[3];

	hand[0].r = (int)(p1 / 4);

	hand[1].r = (int)(p2 / 4);

	hand[2].r = (int)(p3 / 4);

	hand[0].s = p1 % 4;

	hand[1].s = p2 % 4;

	hand[2].s = p3 % 4;

	if ((hand[0].s == hand[1].s) && (hand[1].s == hand[2].s))

		flush = 169 * hand[2].r + 13 * hand[1].r + hand[0].r;

	else

		flush = 0;

	if ((hand[2].r - hand[1].r == 1) && (hand[1].r - hand[0].r == 1))

		straight = hand[2].r;

	else if ((hand[2].r == 12) && (hand[1].r == 1) && (hand[0].r == 0))

		straight = 1;

	else

		straight = 0;

	if ((straight > 0) && (flush > 0))

		return 2197 * 5 + straight;

	else if (hand[2].r == hand[0].r)

		return 2197 * 4 + hand[0].r;

	else if (straight > 0)

		return 2197 * 3 + straight;

	else if (flush > 0)

		return 2197 * 2 + flush;

	else if (hand[2].r == hand[1].r)

		return 2197 + 13 * hand[1].r + hand[0].r;

	else if (hand[0].r == hand[1].r)

		return 2197 + 13 * hand[1].r + hand[2].r;

	else

		return 169 * hand[2].r + 13 * hand[1].r + hand[0].r;	

}

Written by: Michael Shackleford