运用C语言使用4*13的双下标数组deck来表示一副扑克牌，数组的一行对应一种花色，0行代表红桃（Heart），1行代表方块（Diamond），2行代表草花（Club），3行代表黑桃（Spade）。数组的一列对应一张牌的面值——第0到9列依次对应着Ace到Ten、第10到12列分别对应着Jack、Queen、King。要使用字符串数组suit和字符串数组face来分别存储表示花色名的四个字符串和表示牌面值的13个字符串。 任务1：实现洗牌，即随机将编号为1-52的每张牌随机放到deck数组中； 任务2：实现发牌，即将上述1-52张牌依次显示出来，比如Six of Club； 任务3：修改发牌程序，使其能够处理一手五张牌的扑克游戏，然后实现如下功能： （a） 判断这一手牌中是否含有对子； （b） 判断这一手牌中是否含有两个对子； （c） 判断这一手牌中是否含有三张同级的牌； （d） 判断这一手牌中是否含有四张同级的牌； （e） 判断这一手牌中是否有一个同花； （f） 判断这一手牌中是否有一个顺子； （g） 判断这一手牌中是否有一个同花顺； 任务4：利用上面开发的函数，编写一个能处理两手五张扑克牌的程序，该程序分别评价每一手牌，然后判断哪一手更好（从g->a级别依次降低）。

任务1：实现洗牌

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

char *suit[4] = {"Heart", "Diamond", "Club", "Spade"};
char *face[13] = {"Ace", "Two", "Three", "Four", "Five", "Six", "Seven",
                  "Eight", "Nine", "Ten", "Jack", "Queen", "King"};
int deck[4][13];

void shuffle(int deck[][13]);

int main(void)
{
    int i, j;

    // 初始化牌堆
    for (i = 0; i < 4; i++)
        for (j = 0; j < 13; j++)
            deck[i][j] = j;

    // 洗牌
    shuffle(deck);

    // 输出洗好的牌
    for (i = 0; i < 4; i++) {
        for (j = 0; j < 13; j++)
            printf("%s of %s\t", face[deck[i][j]], suit[i]);
        printf("\n");
    }

    return 0;
}

void shuffle(int deck[][13])
{
    int i, j, k, l;

    srand((unsigned) time(NULL));

    for (i = 0; i < 4; i++)
        for (j = 0; j < 13; j++) {
            k = rand() % 4;
            l = rand() % 13;
            int temp = deck[i][j];
            deck[i][j] = deck[k][l];
            deck[k][l] = temp;
        }
}

任务2：实现发牌

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

char *suit[4] = {"Heart", "Diamond", "Club", "Spade"};
char *face[13] = {"Ace", "Two", "Three", "Four", "Five", "Six", "Seven",
                  "Eight", "Nine", "Ten", "Jack", "Queen", "King"};
int deck[4][13];

void shuffle(int deck[][13]);

int main(void)
{
    int i, j, k;
    char *hand[5];

    // 初始化牌堆
    for (i = 0; i < 4; i++)
        for (j = 0; j < 13; j++)
            deck[i][j] = j;

    // 洗牌
    shuffle(deck);

    // 发牌
    for (i = 0; i < 5; i++) {
        k = i / 13;
        hand[i] = malloc(sizeof(char) * 20);
        sprintf(hand[i], "%s of %s", face[deck[k][i%13]], suit[k]);
        printf("%s\n", hand[i]);
    }

    // 释放内存
    for (i = 0; i < 5; i++)
        free(hand[i]);

    return 0;
}

void shuffle(int deck[][13])
{
    int i, j, k, l;

    srand((unsigned) time(NULL));

    for (i = 0; i < 4; i++)
        for (j = 0; j < 13; j++) {
            k = rand() % 4;
            l = rand() % 13;
            int temp = deck[i][j];
            deck[i][j] = deck[k][l];
            deck[k][l] = temp;
        }
}

任务3：修改发牌程序

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

char *suit[4] = {"Heart", "Diamond", "Club", "Spade"};
char *face[13] = {"Ace", "Two", "Three", "Four", "Five", "Six", "Seven",
                  "Eight", "Nine", "Ten", "Jack", "Queen", "King"};
int deck[4][13];

void shuffle(int deck[][13]);
int has_pair(char *hand[]);
int has_two_pairs(char *hand[]);
int has_three_of_a_kind(char *hand[]);
int has_four_of_a_kind(char *hand[]);
int has_flush(char *hand[]);
int has_straight(char *hand[]);
int has_straight_flush(char *hand[]);

int main(void)
{
    int i, j, k;
    char *hand[5];

    // 初始化牌堆
    for (i = 0; i < 4; i++)
        for (j = 0; j < 13; j++)
            deck[i][j] = j;

    // 洗牌
    shuffle(deck);

    // 发牌
    for (i = 0; i < 5; i++) {
        k = i / 13;
        hand[i] = malloc(sizeof(char) * 20);
        sprintf(hand[i], "%s of %s", face[deck[k][i%13]], suit[k]);
        printf("%s\n", hand[i]);
    }

    // 判断手牌
    if (has_straight_flush(hand))
        printf("Straight Flush\n");
    else if (has_four_of_a_kind(hand))
        printf("Four of a Kind\n");
    else if (has_full_house(hand))
        printf("Full House\n");
    else if (has_flush(hand))
        printf("Flush\n");
    else if (has_straight(hand))
        printf("Straight\n");
    else if (has_three_of_a_kind(hand))
        printf("Three of a Kind\n");
    else if (has_two_pairs(hand))
        printf("Two Pairs\n");
    else if (has_pair(hand))
        printf("Pair\n");
    else
        printf("High Card\n");

    // 释放内存
    for (i = 0; i < 5; i++)
        free(hand[i]);

    return 0;
}

void shuffle(int deck[][13])
{
    int i, j, k, l;

    srand((unsigned) time(NULL));

    for (i = 0; i < 4; i++)
        for (j = 0; j < 13; j++) {
            k = rand() % 4;
            l = rand() % 13;
            int temp = deck[i][j];
            deck[i][j] = deck[k][l];
            deck[k][l] = temp;
        }
}

int has_pair(char *hand[])
{
    int i, j;

    for (i = 0; i < 5; i++)
        for (j = i + 1; j < 5; j++)
            if (strcmp(hand[i], hand[j]) == 0)
                return 1;

    return 0;
}

int has_two_pairs(char *hand[])
{
    int i, j, count = 0;

    for (i = 0; i < 5; i++)
        for (j = i + 1; j < 5; j++)
            if (strcmp(hand[i], hand[j]) == 0)
                count++;

    return count == 2;
}

int has_three_of_a_kind(char *hand[])
{
    int i, j, k;

    for (i = 0; i < 5; i++) {
        k = 1;
        for (j = 0; j < 5; j++)
            if (i != j && strcmp(hand[i], hand[j]) == 0)
                k++;
        if (k == 3)
            return 1;
    }

    return 0;
}

int has_four_of_a_kind(char *hand[])
{
    int i, j, k;

    for (i = 0; i < 5; i++) {
        k = 1;
        for (j = 0; j < 5; j++)
            if (i != j && strcmp(hand[i], hand[j]) == 0)
                k++;
        if (k == 4)
            return 1;
    }

    return 0;
}

int has_flush(char *hand[])
{
    int i, j;

    for (i = 0; i < 5; i++)
        for (j = i + 1; j < 5; j++)
            if (strcmp(hand[i] + strlen(hand[i]) - strlen(suit[0]), hand[j] + strlen(hand[j]) - strlen(suit[0])) != 0)
                return 0;

    return 1;
}

int has_straight(char *hand[])
{
    int i, j, k;

    for (i = 0; i < 5; i++) {
        k = 1;
        for (j = 0; j < 5; j++)
            if (i != j && strcmp(hand[i] + strlen(hand[i]) - strlen(suit[0]), hand[j] + strlen(hand[j]) - strlen(suit[0])) == -1)
                k++;
        if (k == 5)
            return 1;
    }

    return 0;
}

int has_straight_flush(char *hand[])
{
    return has_flush(hand) && has_straight(hand);
}

任务4：处理两手五张扑克牌

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

char *suit[4] = {"Heart", "Diamond", "Club", "Spade"};
char *face[13] = {"Ace", "Two", "Three", "Four", "Five", "Six", "Seven",
                  "Eight", "Nine", "Ten", "Jack", "Queen", "King"};
int deck[4][13];

void shuffle(int deck[][13]);
int has_pair(char *hand[]);
int has_two_pairs(char *hand[]);
int has_three_of_a_kind(char *hand[]);
int has_four_of_a_kind(char *hand[]);
int has_flush(char *hand[]);
int has_straight(char *hand[]);
int has_straight_flush(char *hand[]);

int evaluate(char *hand[]);

int main(void)
{
    int i, j, k;
    char *hand1[5], *hand2[5];

    // 初始化牌堆
    for (i = 0; i < 4; i++)
        for (j = 0; j < 13; j++)
            deck[i][j] = j;

    // 洗牌
    shuffle(deck);

    // 发第一手牌
    printf("Hand 1:\n");
    for (i = 0; i < 5; i++) {
        k = i / 13;
        hand1[i] = malloc(sizeof(char) * 20);
        sprintf(hand1[i], "%s of %s", face[deck[k][i%13]], suit[k]);
        printf("%s\n", hand1[i]);
    }

    // 发第二手牌
    printf("\nHand 2:\n");
    for (i = 0; i < 5; i++) {
        k = (i+5) / 13;
        hand2[i] = malloc(sizeof(char) * 20);
        sprintf(hand2[i], "%s of %s", face[deck[k][(i+5)%13]], suit[k]);
        printf("%s\n", hand2[i]);
    }

    // 比较两手牌
    int score1 = evaluate(hand1);
    int score2 = evaluate(hand2);
    printf("\nHand 1 score: %d\n", score1);
    printf("Hand 2 score: %d\n", score2);
    if (score1 > score2)
        printf("Hand 1 wins!\n");
    else if (score1 < score2)
        printf("Hand 2 wins!\n");
    else
        printf("Tie!\n");

    // 释放内存
    for (i = 0; i < 5; i++) {
        free(hand1[i]);
        free(hand2[i]);
    }

    return 0;
}

void shuffle(int deck[][13])
{
    int i, j, k, l;

    srand((unsigned) time(NULL));

    for (i = 0; i < 4; i++)
        for (j = 0; j < 13; j++) {
            k = rand() % 4;
            l = rand() % 13;
            int temp = deck[i][j];
            deck[i][j] = deck[k][l];
            deck[k][l] = temp;
        }
}

int has_pair(char *hand[])
{
    int i, j;

    for (i = 0; i < 5; i++)
        for (j = i + 1; j < 5; j++)
            if (strcmp(hand[i], hand[j]) == 0)
                return 1;

    return 0;
}

int has_two_pairs(char *hand[])
{
    int i, j, count = 0;

    for (i = 0; i < 5; i++)
        for (j = i + 1; j < 5; j++)
            if (strcmp(hand[i], hand[j]) == 0)
                count++;

    return count == 2;
}

int has_three_of_a_kind(char *hand[])
{
    int i, j, k;

    for (i = 0; i < 5; i++) {
        k = 1;
        for (j = 0; j < 5; j++)
            if (i != j && strcmp(hand[i], hand[j]) == 0)
                k++;
        if (k == 3)
            return 1;
    }

    return 0;
}

int has_four_of_a_kind(char *hand[])
{
    int i, j, k;

    for (i = 0; i < 5; i++) {
        k = 1;
        for (j = 0; j < 5; j++)
            if (i != j && strcmp(hand[i], hand[j]) == 0)
                k++;
        if (k == 4)
            return 1;
    }

    return 0;
}

int has_flush(char *hand[])
{
    int i, j;

    for (i = 0; i < 5; i++)
        for (j = i + 1; j < 5; j++)
            if (strcmp(hand[i] + strlen(hand[i]) - strlen(suit[0]), hand[j] + strlen(hand[j]) - strlen(suit[0])) != 0)
                return 0;

    return 1;
}

int has_straight(char *hand[])
{
    int i, j, k;

    for (i = 0; i < 5; i++) {
        k = 1;
        for (j = 0; j < 5; j++)
            if (i != j && strcmp(hand[i] + strlen(hand[i]) - strlen(suit[0]), hand[j] + strlen(hand[j]) - strlen(suit[0])) == -1)
                k++;
        if (k == 5)
            return 1;
    }

    return 0;
}

int has_straight_flush(char *hand[])
{
    return has_flush(hand) && has_straight(hand);
}

int evaluate(char *hand[])
{
    if (has_straight_flush(hand))
        return 8;
    else if (has_four_of_a_kind(hand))
        return 7;
    else if (has_full_house(hand))
        return 6;
    else if (has_flush(hand))
        return 5;
    else if (has_straight(hand))
        return 4;
    else if (has_three_of_a_kind(hand))
        return 3;
    else if (has_two_pairs(hand))
        return 2;
    else if (has_pair(hand))
        return 1;
    else
        return 0;
}