简易三子棋游戏代码

设计思路：
代码大体分为菜单显示，玩家走棋，电脑走棋，判断输赢，显示棋盘这几个主要模块。
菜单显示：让玩家选择游戏或者退出
玩家走棋：让玩家输入棋盘坐标放棋。需判断位置是否合理。
电脑走棋：让电脑循环生成两个3以内的随机数，直至位置合理退出循环，确定坐标。
判断输赢：逐行逐列判断是否有三子连珠（排除全是初始值（空格）的情况），或是和局，或是继续下棋。
显示棋盘：双层循环输出棋盘上每行每列的值。
代码如下：

#include<stdio.h>
#include<string.h>
#include<time.h>
#include<Windows.h>

#pragma warning(disable:4996)

#define P_COLOR 'X'
#define C_COLOR 'O'

#define ROW 3
#define COL 3

#define NEXT 'N'
#define DRAW 'D'

void Menu()//菜单
{
    
    
	printf("#######################\n");
	printf("## 1. Play   2. Exit ##\n");
	printf("#######################\n");
	printf("请输入：\n ");
}

static void ShowBoard(char board[][COL], int row, int col)//显示棋盘
{
    
    
	printf("  | 1 | 2 | 3 |\n");
	printf("---------------\n");
	for (int i = 0; i < row; i++){
    
    
		printf("%d |", i + 1);
		for (int j = 0; j < col; j++){
    
    
			printf(" %c |", board[i][j]);
		}
		printf("\n---------------\n");
	}
}

static void PlayerMove(char board[][COL], int row, int col)//玩家走棋
{
    
    
	int x = 0;
	int y = 0;
	while (1){
    
    
		printf("请输入你的位置");
		scanf("%d %d", &x, &y);
		if (x < 1 || x > 3 || y < 1 || y > 3){
    
    
			printf("你输入的坐标有误！\n");
			continue;
		}
		else if (board[x - 1][y - 1] != ' '){
    
    
			printf("该位置已经被占用!\n");
			continue;
		}
		else{
    
    
			board[x - 1][y - 1] = P_COLOR;
			break;
		}
	}
}

static char Judge(char board[][COL], int row, int col)//判断当前棋局的情况
{
    
    
	for (int i = 0; i < row; i++){
    
    
		if (board[i][0] == board[i][1] && \
			board[i][1] == board[i][2] && \
			board[i][0] != ' '){
    
    
			return board[i][0];
		}
	}

	for (int j = 0; j < col; j++){
    
    
		if (board[0][j] == board[1][j] && \
			board[1][j] == board[2][j] && \
			board[0][j] != ' '){
    
    
			return board[0][j];
		}
	}

	if (board[0][0] == board[1][1] && \
		board[1][1] == board[2][2] && \
		board[0][0] != ' '){
    
    
		return board[1][1];
	}

	if (board[0][2] == board[1][1] && \
		board[1][1] == board[2][0] && \
		board[1][1] != ' '){
    
    
		return board[1][1];
	}

	for (int i = 0; i < row; i++){
    
    
		for (int j = 0; j < col; j++){
    
    
			if (board[i][j] == ' '){
    
    
				return NEXT;
			}
		}
	}

	return DRAW;
}

static void ComputerMove(char board[][COL], int row, int col)//电脑随机走棋
{
    
    
	while (1){
    
    
		int x = rand() % row;
		int y = rand() % col;
		if (board[x][y] == ' '){
    
    
			board[x][y] = C_COLOR;
			break;
		}
	}
}

void Game()
{
    
    
	srand((unsigned long)time(NULL));//随机数种子
	char board[ROW][COL];
	memset(board, ' ', sizeof(board));
	char result = 'x';
	do{
    
    
		ShowBoard(board, ROW, COL);
		PlayerMove(board, ROW, COL);
		result = Judge(board, ROW, COL);
		if (result != NEXT){
    
    
			break;
		}
		ComputerMove(board, ROW, COL);
		result = Judge(board, ROW, COL);
		if (result != NEXT){
    
    
			break;
		}
	} while (1);

	if (P_COLOR == result){
    
    
		printf("你赢了!\n");
	}
	else if (C_COLOR == result){
    
    
		printf("你输了!\n");
	}
	else{
    
    
		printf("和棋!\n");
	}
	ShowBoard(board, ROW, COL);
}

int main()
{
    
    
	
	int n;
	int quit = 0;
	while (!quit)
	{
    
    
		Menu();
		scanf("%d",&n);
		switch (n)
		{
    
    
		case 1:
			Game(); 
			break;
		case 2:
			quit = 1; break;
		default:printf("输入有误！请重新输入！\n"); break;
		}
	}
	printf("ByeBye!\n");
	system("pause");
	return 0;
}