用C语言写一个斗地主游戏

以下是一个简单的斗地主游戏的C语言实现，只包括基本的发牌、出牌和比较大小的功能，没有考虑AI出牌策略和游戏规则等更复杂的部分。代码注释中有详细的说明。

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

#define CARD_NUM 54 // 扑克牌数量

// 扑克牌结构体
typedef struct {
    int num; // 牌面大小，1-13表示A、2、3...K，0表示小王，1表示大王
    int suit; // 花色，0表示黑桃，1表示红桃，2表示梅花，3表示方块
} Card;

// 初始化扑克牌，将54张牌按顺序放入cards数组中
void init_cards(Card *cards) {
    for (int i = 0; i < CARD_NUM; i++) {
        if (i < 52) {
            cards[i].num = i % 13 + 1;
            cards[i].suit = i / 13;
        } else if (i == 52) {
            cards[i].num = 0;
            cards[i].suit = 4;
        } else {
            cards[i].num = 1;
            cards[i].suit = 4;
        }
    }
}

// 洗牌，将cards数组中的牌随机打乱
void shuffle(Card *cards) {
    srand(time(NULL));
    for (int i = 0; i < CARD_NUM; i++) {
        int j = rand() % CARD_NUM;
        Card tmp = cards[i];
        cards[i] = cards[j];
        cards[j] = tmp;
    }
}

// 打印牌面，将num和suit转换为字符串打印
void print_card(Card card) {
    char *num_str, *suit_str;
    switch (card.num) {
        case 1: num_str = "A"; break;
        case 2: num_str = "2"; break;
        case 3: num_str = "3"; break;
        case 4: num_str = "4"; break;
        case 5: num_str = "5"; break;
        case 6: num_str = "6"; break;
        case 7: num_str = "7"; break;
        case 8: num_str = "8"; break;
        case 9: num_str = "9"; break;
        case 10: num_str = "10"; break;
        case 11: num_str = "J"; break;
        case 12: num_str = "Q"; break;
        case 13: num_str = "K"; break;
        case 0: num_str = "W"; break;
        default: num_str = ""; break;
    }
    switch (card.suit) {
        case 0: suit_str = "\u2660"; break;
        case 1: suit_str = "\u2665"; break;
        case 2: suit_str = "\u2663"; break;
        case 3: suit_str = "\u2666"; break;
        case 4: suit_str = "J"; break;
        default: suit_str = ""; break;
    }
    printf("%s%s ", num_str, suit_str);
}

// 打印一组牌面
void print_cards(Card *cards, int n) {
    for (int i = 0; i < n; i++) {
        print_card(cards[i]);
    }
    printf("\n");
}

// 比较两张牌的大小，返回1表示card1大，返回-1表示card2大，返回0表示相同大小
int compare_cards(Card card1, Card card2) {
    if (card1.num == card2.num) {
        if (card1.suit > card2.suit) {
            return 1;
        } else if (card1.suit < card2.suit) {
            return -1;
        } else {
            return 0;
        }
    } else if (card1.num == 1) {
        return 1;
    } else if (card2.num == 1) {
        return -1;
    } else if (card1.num > card2.num) {
        return 1;
    } else {
        return -1;
    }
}

// 判断一组牌是否为顺子，返回1表示是，返回0表示不是
int is_straight(Card *cards, int n) {
    if (n < 5) {
        return 0;
    }
    for (int i = 0; i < n - 1; i++) {
        if (cards[i].num != cards[i+1].num - 1) {
            return 0;
        }
    }
    return 1;
}

int main() {
    Card cards[CARD_NUM];
    init_cards(cards);
    shuffle(cards);

    // 发牌
    Card player1[17], player2[17], player3[17], public_cards[3];
    for (int i = 0; i < 17; i++) {
        player1[i] = cards[i*3];
        player2[i] = cards[i*3+1];
        player3[i] = cards[i*3+2];
    }
    for (int i = 0; i < 3; i++) {
        public_cards[i] = cards[51+i];
    }

    printf("Player 1: ");
    print_cards(player1, 17);
    printf("Player 2: ");
    print_cards(player2, 17);
    printf("Player 3: ");
    print_cards(player3, 17);
    printf("Public cards: ");
    print_cards(public_cards, 3);

    // 出牌
    int player = 1;
    Card last_cards[20];
    int last_num = 0;
    while (1) {
        printf("Player %d's turn: ", player);
        Card played_cards[20];
        int played_num = 0;
        char input_str[100];
        fgets(input_str, 100, stdin);
        if (input_str[0] == '\n') {
            printf("Pass.\n");
            player = player % 3 + 1;
            continue;
        }
        char *token = strtok(input_str, " \n");
        while (token != NULL) {
            int num, suit;
            switch (token[0]) {
                case 'A': num = 1; break;
                case '2': num = 2; break;
                case '3': num = 3; break;
                case '4': num = 4; break;
                case '5': num = 5; break;
                case '6': num = 6; break;
                case '7': num = 7; break;
                case '8': num = 8; break;
                case '9': num = 9; break;
                case '1': num = 10; break;
                case 'J': num = 11; break;
                case 'Q': num = 12; break;
                case 'K': num = 13; break;
                case 'W': num = 0; break;
                default: num = -1; break;
            }
            switch (token[1]) {
                case '\u2660': suit = 0; break;
                case '\u2665': suit = 1; break;
                case '\u2663': suit = 2; break;
                case '\u2666': suit = 3; break;
                case 'J': suit = 4; break;
                default: suit = -1; break;
            }
            if (num == -1 || suit == -1) {
                printf("Invalid input: %s\n", token);
                break;
            }
            Card card = {num, suit};
            played_cards[played_num++] = card;
            token = strtok(NULL, " \n");
        }

        // 检查出牌是否合法
        if (played_num == 0) {
            printf("Invalid input: no cards played.\n");
            continue;
        }
        if (player == 1 && played_num != 1) {
            printf("Invalid input: must play one card.\n");
            continue;
        }
        if (played_num != last_num && last_num != 0) {
            printf("Invalid input: number of cards does not match.\n");
            continue;
        }
        if (played_num == 1 && played_cards[0].num == 0) {
            printf("Invalid input: cannot play joker.\n");
            continue;
        }
        for (int i = 0; i < played_num; i++) {
            int found = 0;
            for (int j = 0; j < 17; j++) {
                if (compare_cards(played_cards[i], player1[j]) == 0) {
                    found = 1;
                    break;
                }
            }
            if (!found) {
                printf("Invalid input: card not in hand.\n");
                break;
            }
        }
        if (played_num == 1 && last_num != 0 && compare_cards(played_cards[0], last_cards[0]) <= 0) {
            printf("Invalid input: card not larger than last played card.\n");
            continue;
        }
        if (played_num > 1 && !is_straight(played_cards, played_num)) {
            printf("Invalid input: not a straight.\n");
            continue;
        }
        if (played_num > 1 && played_num != last_num && last_num != 0) {
            printf("Invalid input: number of cards does not match.\n");
            continue;
        }

        // 更新出牌记录和玩家手牌
        for (int i = 0; i < played_num; i++) {
            last_cards[i] = played_cards[i];
            for (int j = 0; j < 17; j++) {
                if (compare_cards(played_cards[i], player1[j]) == 0) {
                    player1[j] = (Card){-1, -1};
                    break;
                }
            }
        }
        last_num = played_num;
        printf("Played cards: ");
        print_cards(played_cards, played_num);

        // 判断游戏是否结束
        int end = 0;
        for (int i = 0; i < 17; i++) {
            if (player1[i].num != -1) {
                end = 1;
                break;
            }
        }
        if (!end) {
            printf("Game over! Player 1 wins.\n");
            break;
        }

        player = player % 3 + 1;
    }

    return 0;
}

该代码实现的斗地主游戏只能在命令行中运行，并且没有图形界面等交互体验，但可以作为一个基础的斗地主游戏框架，在此基础上可以扩展出更多的游戏规则和功能。