c语言实现三子棋

主菜单函数

#include "game.h"


void menu()
{
	printf("*********************************\n");
	printf("********      1. play    ********\n");
	printf("********      0. exit    ********\n");
	printf("*********************************\n");
}

void game()
{
	char ret = 0;
	//数据的存储需要一个3*3的二维数组
	char board[ROW][COL] = {0};
	init_board(board, ROW, COL);
	display_board(board, ROW, COL);
	//玩游戏
	while(1)
	{
		player_move(board, ROW, COL);
		display_board(board, ROW, COL);

		ret = is_win(board, ROW, COL);
		if (ret != 'C')
			break;

		computer_move(board, ROW, COL);
		display_board(board, ROW, COL);

		ret = is_win(board, ROW, COL);
		if (ret != 'C')
			break;

	}
	if (ret == '*')
	{
		printf("玩家赢\n");
	}
	else if (ret == '#')
	{
		printf("电脑赢\n");
	}
	else if(ret == 'Q')
	{
		printf("平局\n");
	}
	display_board(board, ROW, COL);

}

//玩家赢 - '*'
//电脑赢 - '#'
//平局了 - 'Q'
//游戏继续 - 'C'

int main()
{
	int input = 0;
	srand((unsigned int)time(NULL));

	do
	{
		menu();
		printf("请选择:>");
		scanf("%d", &input);
		switch (input)
		{
		case 1:
			game();
			break;
		case 0:
			printf("退出游戏\n");
			break;
		default:
			printf("选择错误，重新选择!\n");
			break;
		}
	} while (input);

	return 0;
}

游戏函数

#include "game.h"

void init_board(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] = ' ';//初始化棋盘
		}
	}
}

void display_board(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]);
			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 player_move(char board[ROW][COL], int row, int col)
{
	int x = 0;
	int y = 0;

	printf("玩家下棋:>\n");

	while (1)
	{
		printf("请输入要下棋的坐标:>");
		scanf("%d %d", &x, &y);
		//1.坐标的合法性
		//2.坐标是否被占用
		if (x >= 1 && x <= row && y >= 1 && y <= col)
		{
			if (board[x - 1][y - 1] == ' ')
			{
				board[x - 1][y - 1] = '*';
				break;
			}
			else
			{
				printf("该坐标被占用，请重新输入\n");
			}
		}
		else
		{
			printf("坐标非法，重新输入\n");
		}
	}
}

//
//电脑随机下棋
//
void computer_move(char board[ROW][COL], int row, int col)
{
	printf("电脑下棋:>\n");
	//0~32726
	//%3-->0~2
	while (1)
	{
		int x = rand() % row;
		int y = rand() % col;
		if (board[x][y] == ' ')
		{
			board[x][y] = '#';
			break;
		}
	}
}

//如果棋盘满了，返回1
//不满，返回0
static int is_full(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++)
		{
			if (' ' == board[i][j])
			{
				return 0;
			}
		}
	}

	return 1;
}

char is_win(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][1] == board[i][2] && board[i][0] != ' ')
		{
			return board[i][0];
		}
	}

	for (i = 0; i < col; i++)
	{
		if (board[0][i] == board[1][i] && board[1][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];
	}

	//判断平局
	if (is_full(board, row, col) == 1)
	{
		return 'Q';
	}

	//继续
	return 'C';
}

头文件

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define ROW 3
#define COL 3

//初始化棋盘
void init_board(char board[ROW][COL], int row, int col);

//打印棋盘
void display_board(char board[ROW][COL], int row, int col);

//玩家下棋
void player_move(char board[ROW][COL], int row, int col);

//电脑下棋
void computer_move(char board[ROW][COL], int row, int col);

//判断游戏状态
char is_win(char board[ROW][COL], int row, int col);