1.头文件部分
#ifndef _THREE_CHESSH
#define _THREE_CHESSH

#include<stdio.h>
#include<windows.h>
#include<string.h>
#include<time.h>
#pragma warning(disable:4996)

#define ROW 3
#define COL 3

void ShowUI();
void Game();
void ComputerMove(char board[ROW][COL], int row, int col);
void PlayerMove(char board[][COL], int row, int col);
void ShowBoard(char board[][COL], int row, int col);
char Judge(char board[][COL], int row, int col);

#endif

2.主函数部分
#include"Three_Chess.h"

int main()
{
int select = 0;
int quit = 0;
while (!quit)
{
ShowUI(); //打印游戏菜单
scanf("%d", &select); //用户进行选择
switch (select)
{
case 1: //进入游戏函数
Game();
break;
case 2: //退出游戏
quit = 1;
printf("ByeBye!\n");
break;
default:
printf("Please Enter Again!\n");
break;
}
}
system("pause");
return 0;
}

3.游戏函数部分
#define _CRT_SECURE_NO_WARNINGS 1
#include"THREE_CHESS.h"
void ShowUI()
{
printf("\n");
printf(" 1、GAME 2、EXIT \n");
printf("\n");
printf("Please Select:\n");
}
void ComputerMove(char board[][COL], int row, int col)
{
while (1)
{
int x = rand() % row;
int y = rand() % col;
if (board[x][y] == ' ') //判断此位置是否为空，如果为空就赋值'O'表示电脑走在此位置
{
board[x][y] = 'O';
break; //退出循环
}
}
}
void PlayerMove(char board[][COL], int row, int col)
{
int x, y;
while (1)
{
printf("Please enter position->x y:\n");
scanf("%d %d", &x, &y); //输入坐标
if (x >= 1 && x <= row && y >= 1 && y <= col)
{ //判断输入的坐标是否满足条件
if (board[x - 1][y - 1] == ' ') //用户输入的下标是从1开始的，而数组下标是从0开始的，所以这里要对x和y减1
{
board[x - 1][y - 1] = 'X'; //用户将X下入棋盘
break;
}
else
{
printf("Your place is taken,Try Again:\n");
}
}
else
{
printf("Enter error,Try Again:\n");
}
}
}
char Judge(char board[][COL], int row, int col)//判断函数
{
int i = 0;
int j = 0;
for (i = 0; i < row; i++)
{
if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][2] != ' ')
{
return board[i][0];
}
}
for (i = 0; i < col; i++)
{
if (board[0][i] == board[1][i] && board[1][i] == board[2][i] && board[2][i] != ' ')
{
return board[0][i];
}
}
if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[2][2] != ' ')
{
return board[0][0];
}
if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[2][0] != ' ')
{
return board[0][2];
}

for (i = 0; i < row; i++)//判断是否棋盘放满了
{for (j = 0; j < col; j++){if (board[i][j] == ' '){return 'N';           //继续游戏}}
}
//平局
return 'E';              

}
void ShowBoard(char board[][COL], int row, int col)
{
system("cls"); //清屏
printf(" 1 2 3\n");
printf("---------------\n");
int i = 0;
int j = 0;
for (i = 0; i < row; i++)
{
printf("%d |", i + 1);
for (j = 0; j < col; j++)
{
printf(" %c |", board[i][j]);
}
printf("\n---------------\n");
}
printf("\n");
}
void Game()
{
char board[ROW][COL]; //定义棋盘（用二维数组实现）
memset(board, ' ', sizeof(board)); //将棋盘中的元素变成空格
char result = 'N';
srand((unsigned long)time(NULL));
while (1)
{
ComputerMove(board, ROW, COL);
ShowBoard(board, ROW, COL);
result = Judge(board, ROW, COL);
if (result != 'N') //X玩家赢，O电脑赢，E平局，N继续
{
break;
}
PlayerMove(board, ROW, COL);
ShowBoard(board, ROW, COL);
result = Judge(board, ROW, COL);
if (result != 'N') //X玩家赢，O电脑赢，E平局，N继续
{
break;
}
}
switch (result)
{
case 'X':
printf("Congratulations!You Win!\n");
break;
case 'O':
printf("Damn!You Lose！\n");
break;
case 'E':
printf("Dogfall!\n");
break;
default:
break;
}
}