C语言实现三子棋小游戏

我会带着你远行 2022-05-21 05:57 262阅读 0赞

## 首先，我们要知道写三子棋游戏的思路： ##

菜单——选择先行——打印棋盘——玩家走（或电脑走）——判断输赢——结束

当我们有了思路，就只需要一步步按照思路来写函数代码就可以了。

这个游戏实际上最核心的代码是电脑走的，不管怎样，一定要让电脑聪明起来，我这个电脑也不是最聪明的，但也稍微聪明那么一点点。

接下来我们看下代码：

#### 头文件： ####

#ifndef __GAME_H__
        #define __GAME_H__
    
        #define ROW 3
        #define COL 3
    
        #include <stdio.h>
        #include <string.h>
        #include <stdlib.h>
        #include <time.h>
    
        void InitBoard(char board[ROW][COL], int row, int col);
        void PrintBoard(char board[ROW][COL], int row, int col);
        void PlayerMove(char board[ROW][COL], int row, int col);
        void ComputerMove(char board[ROW][COL], int row, int col, int k);
        void ComputerMove1(char board[ROW][COL], int row, int col, int k);
        char IsWin(char board[ROW][COL], int row, int col);
    
        #endif // __GAME_H__

#### 打印菜单 ####

void menu()
    {
        printf("*********************************\n");
        printf("**** 1.play ****\n");
        printf("**** 0.exit ****\n");
        printf("*********************************\n");
    }

#### 选择菜单 ####

void test()
    {
        int input = 0;
        srand((unsigned int)time(NULL));
        do
        {
            menu();
            printf("请选择:\n");
            scanf("%d", &input);
            switch (input)
            {
            case 1:
                game();
                break;
            case 0:
                printf("退出游戏\n");
                break;
            default:
                printf("请重新选择：\n");
            }
        } while (input);
    }

#### 打印先行 ####

void first()
     {
         printf("*********************************\n");
         printf("**** 1.玩家先行 ****\n");
         printf("**** 0.电脑先行 ****\n");
         printf("*********************************\n");
     }

#### 选择先行 ####

void game()
     {
         int input = 0;
         first();
         printf("请选择:\n");
         scanf("%d", &input);
         switch (input)
         {
         case 1:
             PlayerFirst();
             break;
         case 0:
             ComputerFirst();
             break;
         default:
             printf("请重新选择：\n");
         }
     }

#### 打印棋盘 ####

棋盘中的数据需要用一个二维数组来保存，数组的每个元素初始化为空格。

void InitBoard(char board[ROW][COL], int row, int col)
    {
     memset(board, ' ', row*col * sizeof(board[0][0]));
    }

void PrintBoard(char board[ROW][COL], int row, int col)
    {
        for (int i = 0; i < row; i++)
        {
            for (int j = 0; j < col; j++)
            {
                if (j < col - 1)
                {
                    printf(" %c |", board[i][j]);
                }
                else
                {
                    printf(" %c\n", board[i][j]);
                }
            }
            if (i < row - 1)
            {
                for (int j = 0; j < col; j++)
                {
                    if (j < col - 1)
                    {
                        printf("---|");
                    }
                    else
                    {
                        printf("---\n");
                    }
                }
            }
        }
    }

如果需要打印更大的棋盘，只需在头文件中将ROW和COL改掉即可。  
![这里写图片描述][70]

#### 玩家下棋 ####

void PlayerMove(char board[ROW][COL], int row, int col)
    {
        int x = 0;
        int y = 0;
        while (1)
        {
            printf("玩家走:\n");
            printf("请输入坐标:\n");
            scanf("%d%d", &x, &y);
            if (x >= 1 && x <= row && y >= 1 && y <= col)
            {
                if (board[x-1][y-1] == ' ')
                {
                    board[x-1][y-1] = 'X';
                    break;
                }
                else
                {
                    printf("输入错误，请重新输入：\n");
                }
            }
            else
            {
                printf("输入非法，请重新输入：\n");
            }
        }
    }

玩家先行，如要判断一下输入的位置是否合法，还需要判断输入的位置是否已经下过棋了。

#### 电脑下棋 ####

void ComputerMove(char board[ROW][COL], int row, int col, int k)
    {
        int x = 0;
        int y = 0;
        printf("电脑走：\n");
        while (1)
        {
            if (board[1][1] == ' ')
            {
                board[1][1] = 'O';
                break;
            }
            for (int i = 0; i < row; i++)
            {
                for (int j = 0; j < col; j++)
                {
                    if (board[i][j] == ' ' && board[i][(j + 1) % 3] == board[i][(j + 2) % 3] && board[i][(j + 2) % 3] == 'O')
                    {
                        board[i][j] = 'O';
                        return;
                    }
                }
            }
            for (int j = 0; j < col; j++)
            {
                for (int i = 0; i < row; i++)
                {
                    if (board[i][j] == ' ' && board[(i + 1) % 3][j] == board[(i + 2) % 3][j] && board[(i + 2) % 3][j] == 'O')
                    {
                        board[i][j] = 'O';
                        return;
                    }
                }
            }
            for (int i = 0; i < row; i++)
            {
                for (int j = i; j <= i; j++)
                {
                    if (board[i][j] == ' ' && board[(i + 1) % 3][(j + 1) % 3] == board[(i + 2) % 3][(j + 2) % 3] && board[(i + 1) % 3][(j + 1) % 3] == 'O')
                    {
                        board[i][j] = 'O';
                        return;
                    }
                }
            }
            for (int i = 0; i < row; i++)
            {
                for (int j = col - 1 - i; j <= col - 1 - i; j++)
                {
                    if (board[i][j] == ' ' && board[(i + 1) % 3][(j + 2) % 3] == board[(i + 2) % 3][(j + 1) % 3] && board[(i + 1) % 3][(j + 2) % 3] == 'O')
                    {
                        board[i][j] = 'O';
                        return;
                    }
                }
            }
            for (int i = 0; i < row; i++)
            {
                for (int j = 0; j < col; j++)
                {
                    if ((board[i][j] == ' ') && (board[i][(j + 1) % 3] == board[i][(j + 2) % 3]) && (board[i][(j + 2) % 3] == 'X'))
                    {
                        board[i][j] = 'O';
                        return;
                    }
                }
            }
            for (int j = 0; j < col; j++)
            {
                for (int i = 0; i < row; i++)
                {
                    if (board[i][j] == ' ' && board[(i + 1) % 3][j] == board[(i + 2) % 3][j] && board[(i + 2) % 3][j] == 'X')
                    {
                        board[i][j] = 'O';
                        return;
                    }
                }
            }
            for (int i = 0; i < row; i++)
            {
                for (int j = i; j <= i; j++)
                {
                    if (board[i][j] == ' ' && board[(i + 1) % 3][(j + 1) % 3] == board[(i + 2) % 3][(j + 2) % 3] && board[(i + 1) % 3][(j + 1) % 3] == 'X')
                    {
                        board[i][j] = 'O';
                        return;
                    }
                }
            }
            for (int i = 0; i < row; i++)
            {
                for (int j = col - 1 - i; j <= col - 1 - i; j++)
                {
                    if (board[i][j] == ' ' && board[(i + 1) % 3][(j + 2) % 3] == board[(i + 2) % 3][(j + 1) % 3] && board[(i + 1) % 3][(j + 2) % 3] == 'X')
                    {
                        board[i][j] = 'O';
                        return;
                    }
                }
            }
            if (k == 2)
            {
                if (board[x][(y + 1) % 3] == ' ')
                {
                    board[x][(y + 1) % 3] = 'O';
                    break;
                }
                if (board[x][(y + 2) % 3] == ' ')
                {
                    board[x][(y + 2) % 3] = 'O';
                    break;
                }
                if (board[(x + 1) % 3][y] == ' ')
                {
                    board[(x + 1) % 3][y] = 'O';
                    break;
                }
                if (board[(x + 2) % 3][y] == ' ')
                {
                    board[(x + 2) % 3][y] = 'O';
                    break;
                }
            }
            while (1)
            {
                x = rand() % 3;
                y = rand() % 3;
                if (board[x][y] == ' ')
                {
                    board[x][y] = 'O';
                    return;
                }
            }
        }
    }

上述代码是核心。下面是我的电脑的思路：

![这里写图片描述][70 1]

#### 判断输赢 ####

char IsWin(char board[ROW][COL], int row, int col)
    {
        for (int i = 0; i < row; i++)
        {
            if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][0] == 'X')
            {
                return 'P';
            }
            if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][0] == 'O')
            {
                return 'C';
            }
        }
        for (int j = 0; j < col; j++)
        {
            if (board[0][j] == board[1][j] && board[1][j] == board[2][j] && board[0][j] == 'X')
            {
                return 'P';
            }
            if (board[0][j] == board[1][j] && board[1][j] == board[2][j] && board[0][j] == 'O')
            {
                return 'C';
            }
        }
        if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] == 'X')
        {
            return 'P';
        }
        if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] == 'X')
        {
            return 'P';
        }
    
        if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] == 'O')
        {
            return 'C';
        }
        if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] == 'O')
        {
            return 'C';
        }
        for (int i = 0; i < row; i++)
        {
            for (int j = 0; j < col; j++)
            {
                if (board[i][j] == ' ')
                    return 'J';
            }
        }
        return 'Y';
    }

如果玩家赢，返回字符P，电脑赢，返回字符C，平局，返回字符P，继续，则返回字符J；

##### 游戏主体 #####

#pragma warning(disable:4996)
    
    #include "game.h"
    
     void menu()
    {
        printf("*********************************\n");
        printf("**** 1.play ****\n");
        printf("**** 0.exit ****\n");
        printf("*********************************\n");
    }
    
     void first()
     {
         printf("*********************************\n");
         printf("**** 1.玩家先行 ****\n");
         printf("**** 0.电脑先行 ****\n");
         printf("*********************************\n");
     }
    
    
     void ComputerFirst()
     {
         char board[ROW][COL] = { 0 };
         char ret = 0;
         InitBoard(board, ROW, COL);
         PrintBoard(board, ROW, COL);
         int k = 0;
         do
         {
             k++;
             ComputerMove(board, ROW, COL,k);
             PrintBoard(board, ROW, COL);
             ret = IsWin(board, ROW, COL);
             if (ret == 'P')
             {
                 printf("玩家赢\n");
                 PrintBoard(board, ROW, COL);
                 break;
             }
             if (ret == 'C')
             {
                 printf("电脑赢\n");
                 PrintBoard(board, ROW, COL);
                 break;
             }
             if (ret == 'Y')
             {
                 printf("平局\n");
                 break;
             }
             PlayerMove(board, ROW, COL);
             PrintBoard(board, ROW, COL);
             ret = IsWin(board, ROW, COL);
             if (ret == 'P')
             {
                 printf("玩家赢\n");
                 PrintBoard(board, ROW, COL);
                 break;
             }
             if (ret == 'C')
             {
                 printf("电脑赢\n");
                 PrintBoard(board, ROW, COL);
                 break;
             }
             if (ret == 'Y')
             {
                 printf("平局\n");
                 break;
             }
         } while (ret == 'J');
     }
    
     void PlayerFirst()
     {
        char board[ROW][COL] = { 0 };
        char ret = 0;
        InitBoard(board, ROW, COL);
        PrintBoard(board, ROW, COL);
        int k = 0;
        do
        {
            k++;
            PlayerMove(board, ROW, COL);
            PrintBoard(board, ROW, COL);
            ret = IsWin(board, ROW, COL);
            if (ret == 'P')
            {
                printf("玩家赢\n");
                PrintBoard(board, ROW, COL);
                break;
            }
            if (ret == 'C')
            {
                printf("电脑赢\n");
                PrintBoard(board, ROW, COL);
                break;
            }
            if (ret == 'Y')
            {
                printf("平局\n");
                break;
            }
            ComputerMove(board, ROW, COL, k);
            PrintBoard(board, ROW, COL);
            ret = IsWin(board, ROW, COL);
            if (ret == 'P')
            {
                printf("玩家赢\n");
                PrintBoard(board, ROW, COL);
                break;
            }
            if (ret == 'C')
            {
                printf("电脑赢\n");
                PrintBoard(board, ROW, COL);
                break;
            }
            if (ret == 'Y')
            {
                printf("平局\n");
                break;
            }
        } while (ret=='J');
    }
    
     void game()
     {
         int input = 0;
         first();
         printf("请选择:\n");
         scanf("%d", &input);
         switch (input)
         {
         case 1:
             PlayerFirst();
             break;
         case 0:
             ComputerFirst();
             break;
         default:
             printf("请重新选择：\n");
         }
     }
    
    void test()
    {
        int input = 0;
        srand((unsigned int)time(NULL));
        do
        {
            menu();
            printf("请选择:\n");
            scanf("%d", &input);
            switch (input)
            {
            case 1:
                game();
                break;
            case 0:
                printf("退出游戏\n");
                break;
            default:
                printf("请重新选择：\n");
            }
        } while (input);
    }
    
    int main()
    {
        test();
        system("pause");
        return 0;
    }

#### 效果演示 ####

![这里写图片描述][70 2]

电脑会优先自己胜利

![这里写图片描述][70 3]

会堵人的电脑

![这里写图片描述][70 4]

平局

![这里写图片描述][70 5]

[70]: /images/20220521/771045fc9deb45debb519a796298221c.png
[70 1]: /images/20220521/f3802deda23942598751741bf31ad37a.png
[70 2]: /images/20220521/3ae8e1abc72041fa918b56d7c0525f64.png
[70 3]: /images/20220521/fdb2dc7f436c4d7a944b0c17a0689c4e.png
[70 4]: /images/20220521/826c3b7f352f41febbced045a74558e9.png
[70 5]: /images/20220521/a0e2cf73d1004e7c8cecf9657bdba610.png