C语言编写三子棋游戏，找不到哪儿错了

Question

问题遇到的现象和发生背景

C语言编写三子棋游戏
玩家或电脑获胜后游戏不会结束，一直到盘下满才会结束

问题相关代码，请勿粘贴截图

test.c

#define _CRT_SECURE_NO_WARNINGS 1
//三子棋游戏


#include"game.h"

void menu()
{
    printf("***************************\n");
    printf("**** 1. play   0. exit ****\n");
    printf("***************************\n");
}
//---|---|---
//   |   |   
//---|---|---
//   |   |   
//---|---|---
//   |   |   
//游戏的整个实现
void game()
{
    char ret = 0;
    //数组-存放走出的棋盘信息
    char board[ROW][COL] = { 0 };//全部是空格
    //初始化棋盘
    InitBoard(board,ROW,COL);
    //打印棋盘
    DisplayBoard(board,ROW,COL);
    //下棋
    while (1)
    {
        //玩家下棋
        PlayerMove(board,ROW,COL);
        DisplayBoard(board, ROW, COL);
        //判断玩家是否赢
        ret = IsWin(board, ROW, COL);
        if (ret != 'C')
            break;
        
        //电脑下棋
        ComputerMove(board, ROW, COL);
        DisplayBoard(board, ROW, COL);
        //判断电脑是否赢
        ret = IsWin(board, ROW, COL);
        if (ret != 'C')
            break;
    }
    if (ret == '*')
    {
        printf("玩家赢\n");
    }
    else if (ret == '#')
    {
        printf("电脑赢\n");
    }
    else
    {
        printf("平局\n");
    }
}
void test()
{
    int input = 0;
    srand((unsigned int)time(NULL));
    do
    {
        menu();
        printf("请选择:>");
        scanf("%d", &input);
        switch (input)
        {
        case 1:
            game();
            break;
        case 0:
            printf("退出游戏\n");
            break;
        default:
            printf("选择错误，请重新选择\n");
            break;
        }
    } while (input);
}
int main()
{
    test();
    return 0;
}

game.c

#define _CRT_SECURE_NO_WARNINGS 1
#include"game.h"
void InitBoard(char board[ROW][COL], int row, int col)
{
    int i = 0;
    int j = 0;
    for (i = 0; i < row; i++)
    {
        for (j = 0; j < col; j++)
        {
            board[i][j] = ' ';
        }
    }
}

void DisplayBoard(char board[ROW][COL], int row, int col)
{
    int i = 0;
    for (i=0;i<row;i++)
    {
        int j = 0;
        for (j = 0; j < col; j++)
        {
            //1. 打印一行的数据
            printf(" %c ", board[i][j]);
            if (j < col - 1)
                printf("|");
        }
        printf("\n");
        //2. 打印分隔行
        if (i < row - 1)
        {
            int j = 0;
            for (j = 0; j < col; j++)
            {
                printf("---");
                if(j<col-1)
                    printf("|");
            }
            printf("\n");
        }
        
    }
}
void PlayerMove(char board[ROW][COL], int row, int col)
{
    int x = 0;
    int y = 0;
    printf("玩家走：>\n");
    while (1)
    {
        printf("请输入要下的坐标：>");
        scanf("%d%d", &x, &y);
        //判断x,y坐标的合法性
        if (x >= 1 && x <= row && y >= 1 && y <= col)
        {
            if (board[x - 1][y - 1] == ' ')
            {
                board[x - 1][y - 1] = '*';
                break;
            }
            else
            {
                printf("该坐标被占用\n");
            }
        }
        else
        {
            printf("坐标非法，请输入坐标\n");
        }
    }
}

void ComputerMove(char board[ROW][COL], int row, int col)
{
    int x = 0;
    int y = 0;
    printf("电脑走：>\n");
    while (1)
    {
        x = rand() % row;
        y = rand() % col;
        if (board[x][y] == ' ')
        {
            board[x][y] = '#';
            break;
        }
    }

}

//返回1表示棋盘满了
//返回0表示棋盘没满
int IsFull(char board[ROW][COL], int row, int col)
{
    int i = 0;
    int j = 0;
    for (i = 0; i < row; i++)
    {
        for (j = 0; j < col; j++)
        {
            if (board[i][j] == ' ')
                return 0;//没满
        }
    }
    return 1;//满了
}
char IsWin(char board[ROW][COL], int row, int col)
{
    int i = 0;
    //横三行
    for (i = 0; i < row; i++)
    {
        if (board[i][0] == board[i][1] == board[i][2] && board[i][1] != ' ')
        {
            return board[i][1];
        }
    }
    //竖三列
    for (i = 0; i < col; i++)
    {
        if (board[0][i] == board[1][i] == board[2][i] && board[1][i] != ' ')
        {
            return board[1][i];
        }
    }
    //两个对角线
    if (board[0][0] == board[1][1] == board[2][2] && board[1][1] != ' ')
    {
        return board[1][1];
    }
    if (board[2][0] == board[1][1] == board[0][2] && board[1][1] != ' ')
    {
        return board[1][1];
    }
    //判断是否平局
    int ret = IsFull(board, ROW, COL);
    if (1 == ret)
    {
        return 'Q';
    }
    return 'C';
}

game.h

```c
#define _CRT_SECURE_NO_WARNINGS 1

#define ROW 3
#define COL 3


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

//声明
void InitBoard(char board[ROW][COL], int row, int col);
void DisplayBoard(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);

//告诉我们四种游戏的转态
//玩家赢 - '*'
//电脑赢 - '#'
//平局  -- 'Q'
//继续  -- 'C'
char IsWin(char board[ROW][COL], int row, int col);

Answer 1

不能这样连续比较board[i][0] == board[i][1] == board[i][2]
应该改成
if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][1] != ' ')

char IsWin(char board[ROW][COL], int row, int col)
{
    int i = 0;
    //横三行
    for (i = 0; i < row; i++)
    {
        if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][1] != ' ')
        {
            return board[i][1];
        }
    }
    //竖三列
    for (i = 0; i < col; i++)
    {
        if (board[0][i] == board[1][i] && board[1][i] == board[2][i] && board[1][i] != ' ')
        {
            return board[1][i];
        }
    }
    //两个对角线
    if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] != ' ')
    {
        return board[1][1];
    }
    if (board[2][0] == board[1][1] && board[1][1]  == board[0][2] && board[1][1] != ' ')
    {
        return board[1][1];
    }
    //判断是否平局
    int ret = IsFull(board, ROW, COL);
    if (1 == ret)
    {
        return 'Q';
    }
    return 'C';
}

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