#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<time.h>

#define MAX_ROW  3
#define MAX_COL  3

//将棋盘初始化成' '
void init(char board[MAX_ROW][MAX_COL]) {
	for (int row = 0; row < MAX_ROW; row++) {
		for(int col = 0; col < MAX_COL; col++) {
			board[row][col] = ' ';
		}
	}
	//设计随机种子
	srand((unsigned int) time(0));
}
void printBoard(char board[MAX_ROW][MAX_COL]) {
	system("cls");
	for (int row = 0; row < MAX_ROW; row++) {
		printf("+---+---+---+\n");
		for (int col = 0; col < MAX_COL; col++) {
			printf("| %c ", board[row][col]);
		}
		printf("|");
		printf("\n");
	}
	printf("+---+---+---+\n");
}
void playerMove(char board[MAX_ROW][MAX_COL]) {
	printf("请玩家落子!");
	while (1) {
		printf("请输入落子的位置(row col):");
		int row = 0;
		int col = 0;
		scanf("%d %d", &row, &col);
		//输入后验证输入内容是否合法.
		if (row < 0 || row >= MAX_ROW || col < 0 || col >= MAX_COL) {
			printf("输入有误.请重新输入!\n");
			continue;
		}
		if (board[row][col] != ' ') {
			printf("当前位置已有棋子,请重新输入!\n");
			continue;
		}
		board[row][col] = 'x';
		break;
	}
}
void computerMove(char board[MAX_ROW][MAX_COL]) {
	printf("轮到电脑落子");
	while (1) {
		int row = rand() % MAX_ROW;
		int col = rand() % MAX_COL;
		if (board[row][col] != ' ') {
			continue;
		}
		board[row][col] = 'o';
		break;
	}
}
int isFull(char board[MAX_ROW][MAX_COL]) {
	for (int row = 0; row < MAX_ROW; row++) {
		for (int col = 0; col < MAX_COL; col++) {
			if (board[row][col] == ' ') {
				//棋盘没满
				return 0;
			}
		}
	}
	return 1;
}
int checkWinner(char board[MAX_ROW][MAX_COL]) {
	//检查所有行
	for (int row = 0; row < MAX_ROW; row++) {
		if (board[row][0] != ' ' && board[row][0] == board[row][1] && board[row][0] == board[row][2]) {
			return board[row][0];
		}
	}
	//检查所有列
	for (int col = 0; col < MAX_COL; col++) {
		if (board[0][col] != ' ' && board[0][col] == board[1][col] && board[0][col] == board[2][col]) {
			return board[0][col];
		}
	}
	//检查对角线
	if (board[0][0] == board[1][1] && board[0][0] == board[2][2] && board[0][0] != ' ') {
		return board[0][0];
	}
	if (board[0][2] == board[1][1] && board[0][2] == board[2][0] && board[0][2] != ' ') {
		return board[0][2];
	}
	if (isFull(board)) {
		return 'q';
	}
	return ' ';
}
int main() {
	char winner = ' ';
	//1.创建一个棋盘,并初始化.
	char board[MAX_ROW][MAX_COL] = { 0 };
	//2.init函数将棋盘每个格子初始化成' '.
	init(board);
	while (1) {
		//3.打印棋盘
		printBoard(board);
		//4.玩家落子
		playerMove(board);
		//5.判断胜负
		winner = checkWinner(board);
		if (winner != ' ') {
			//胜负已分
			break;
		}
		//6.电脑落子
		computerMove(board);
		//7.判断胜负
		winner = checkWinner(board);
		if (winner != ' ') {
			//胜负已分
			break;
		}
	}
	if (winner == 'x') {
		printf("恭喜你,你赢了!\n");
	}else if(winner=='o') {
		printf("你真菜连人工智障都玩不过\n");
	}else {
		printf("你和人工智障五五开\n");
	}
	return 0;
}