代码里面有一个小bug，看大家能不能发现

text.c

#define _CRT_SECURE_NO_WARNINGS 1

#include "game.h"

//三字棋游戏

#include <stdio.h>

void menu()

{

    printf("************************************\n");

    printf("******   1.Play      0.Exit   ******\n");

    printf("************************************\n");

}

void game()

{

    int ret = 0;

    char board[ROW][COL] = {0};//数组存放棋盘数据

    InitBoard(board, ROW, COL);//初始化棋盘

    DisplayBoard(board, ROW, COL);//显示棋盘

    while (1)

    {

        Playermove(board, ROW, COL);//玩家下棋

        //判断玩家是否能赢

        ret = Iswin(board, ROW, COL);

        if (ret != 'C')

        {

            break;

        }

        Computermove(board, ROW, COL);//电脑下棋

        //判断电脑是否能赢

        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");

    }

}

int test()

{

    int input = 0;

    srand((unsigned int)time(NULL));

    do

    {

        menu();

        printf("请选择:>");

        scanf("%d", &input);

        switch (input)

        {

        case 1:

                game();

                return 1;

                break;

        case 0:

                printf("退出游戏\n");

                return 0;

                break;

        default:

                printf("输入错误，请重新输入\n");

        }

    } while (input);

}


int main()

{

    if (1 == test())

        game();

    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++)
		{
			printf(" %c ", board[i][j]);//打印一行的数据
			if(j < col - 1)
			    printf("|");			
		}
		printf("\n");
		if (i < row - 1)
		{
			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;
	while (1)
	{
		printf("玩家走:>\n");
		printf("请输入坐标:>x y\n");
		scanf("%d%d", &x, &y);
		//判断坐标是否合理
		if (x < row + 2 && y < col + 2)
		{
			board[x - 1][y - 1] = '*';
			DisplayBoard(board, ROW, COL);
			break;
		}
		else
			printf("坐标错误，请重新输入");
	}
}
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] = '#';
			DisplayBoard(board, ROW, COL);
			break;
		}
		
	}
}
int Isfull(char board[ROW][COL],int row,int col)//返回表示棋盘满了，返回0表示没满
{
	int i = 0;
	int j = 0;
	for (i = 0; i < row; i++)
	{
		for (j = 0; j < col; j++)
		{
			if (board[i][j] == ' ')
			{
				return 0;
			}
		}
	}
	return 1;//满了
}
char Iswin(char board[ROW][COL], int row, int col)
{
	int i = 0;
	for (i = 0; i < row; i++)
	{
		if (board[i][0] == board[i][1] && board[i][0] == board[i][2] && board[i][0] != ' ')
			return board[i][0];
	}
	for (i = 0; i < row; i++)
	{
		if (board[0][i] == board[1][i] && board[0][i] == board[2][i] && board[0][i] != ' ')
			return board[0][i];
	}
	if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] != ' ')
		return board[1][1];
	if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] != ' ')
		return board[1][1];
	if (1 == Isfull(board, ROW, COL))
	{
		return 'Q';
	}
	return 'C';
}

game.h

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h> 
#include <stdlib.h> 
#include <time.h> 
#define ROW 3
#define COL 3
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);

char Iswin(char board[ROW][COL], int row, int col);