三子棋游戏

三子棋是一种民间传统游戏，又叫九宫棋、圈圈叉叉、一条龙等。将正方形对角线连起来，相对两边依次摆上三个双方棋子，只要将自己的三个棋子走成一条线，对方就算输了。
首先,我们设立框架如下:
1.构建并初始化棋盘;
2.打印棋盘;
3.玩家落子;
4.检测游戏是否结束;
5.电脑落子;
6.检测游戏是否结束;
并将这六项放入循环里;
具体代码如下:

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#define MAX_ROW 3
#define MAX_COL 3
char chess[MAX_ROW][MAX_COL];
int menu() {
	printf("------------------------\n");
	printf("-------1.开始游戏-------\n");
	printf("-------0.退出游戏-------\n");
	printf("------------------------\n");
	printf("请输入您的选择:");
	int i ;
	scanf("%d", &i);
	return i;
}
void init() {
		for (int row = 0; row < MAX_ROW; row++) {
			for (int col = 0; col < MAX_COL; col++) {
				chess[row][col] = ' ';
			}
		}
	}

void print() {
	for (int row = 0; row < MAX_ROW; ++row) {
		printf("| %c | %c | %c |\n", chess[row][0], chess[row][1], chess[row][2]);
		if (row < MAX_ROW-1) {
			printf("|---|---|---|\n");
		}
	}
}
void PlayerToDo() {
	while (1) {
		int row = 0;
		int col = 0;
		printf("请输入一组坐标:");
		scanf("%d %d", &row, &col);
		if (row >= MAX_ROW || col >= MAX_COL || col < 0 || row < 0) {
			printf("您的输入有误\n");
			continue;
		}
		if (chess[row][col] != ' ') {
			printf("您输入的坐标已经被占\n");
			continue;
		}
		chess[row][col] = 'x';
		break;
	}
}
 void ComputerToDo() {
	 while (1) {
		 int row = rand() % MAX_ROW;
		 int col = rand() % MAX_COL;
		 if (chess[row][col] != ' ') {
			 continue;
		 }
			 chess[row][col] = 'o';
			 break;
	 }
 }
 char IsFull() {
	 for (int row = 0; row < MAX_ROW; ++row) {
		 for (int col = 0; col < MAX_COL; ++col) {
			 if (chess[row][col] == ' ') {
				 return 0;
			 }
		 }
	 }
	 return 1;
 }
 char IsGameOver() {
	 for (int row = 0; row < MAX_ROW; ++row) {
		 if (chess[row][0] == chess[row][1] && chess[row][0] == chess[row][2]) {
			 return chess[row][0];
		 }
	 }
	 for (int col = 0; col < MAX_COL; ++col) {
		 if (chess[0][col] == chess[1][col] && chess[0][col] == chess[2][col]) {
			 return chess[0][col];
		 }
	 }
		 if (chess[0][0] == chess[1][1] && chess[0][0] == chess[2][2]) {
			 return chess[0][0];
		 }
		  if (chess[0][2] == chess[1][1] && chess[0][2] == chess[2][0]) {
			 return chess[0][2];	 
		 }	 
	 
	 if (IsFull()) {
		 return 'q';
	 }
	 return ' ';
 }
 void game() {
	 srand((unsigned int)time(0));
	 init();
	 char winner = '0';
	 while (1) {
		 system("cls");
		 print();
		 PlayerToDo();
		  winner = IsGameOver();
		 if (winner != ' ') {
			 system("cls");
			 print();
			 break;
		 }
		 ComputerToDo();
		 winner = IsGameOver();
		 if (winner != ' ') {
			 system("cls");
			 print();
			 break;
		 }
	 }
	 if (winner == 'x') {
		 printf("恭喜你,你赢了\n");
	 }
	 else if (winner == 'o') {
		 printf("挑战失败\n");
	 }
	 else if (winner == 'q') {
		 printf("和棋了\n");
	 }
	 else {
		 printf("出错了\n");
	 }
 }

int main() {
	while(1) {
		int choice = menu();
		if (choice == 1) {
			game();
		}
		else if (choice == 0) {
			printf("退出成功\n");
			break;
		}
		else {
			printf("您的输入有误\n");
		}
	}
	system("pause");
	return 0;
}