三子棋实现

实现原理

#define  _CRT_SECURE_NO_WARNINGS 1
#pragma once

#define ROW 3
#define COL 3

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

//头文件中声明函数

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

//打印棋盘
void print_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);

//判断输赢的函数
char is_win(char board[ROW][COL], int row, int col);

1.1游戏菜单

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

1.2菜单实现

void test()
{
	srand((unsigned int)time(NULL));
	int input = 0;
	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\n");
			break;
		}
	} while (input);

2.1初始化表格

void print_board(char board[ROW][COL], int row, int col)
{
	int i = 0;
	for (i = 0; i < row; i++)
	{
		//printf(" %c | %c | %c \n", board[i][0], board[i][1], board[i][2]);
		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)
		{
			//printf("---|---|---\n");
			for (j = 0; j < col; j++)
			{
				printf("---");
				if (j < col - 1)
					printf("|");
			}
			printf("\n");
		}
	}
}

2.2玩家下棋

void player_move(char board[ROW][COL], int row, int col)
{
	printf("玩家下棋\n");
	while (1)
	{
		printf("请输入要下棋的坐标:>");
		int x = 0;
		int y = 0;
		scanf("%d %d", &x, &y);
		//坐标合法
		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//坐标非法
		{
			printf("坐标非法\n");
		}
	}
}

2.3电脑下棋

void computer_move(char board[ROW][COL], int row, int col)
{
	printf("电脑下棋:\n");
	while (1)
	{
		int x = rand() % row;
		int y = rand() % col;

		if (board[x][y] == ' ')
		{
			board[x][y] = '#';
			break;
		}
	}
}

3.1判断输赢

void game()
{
	//存放玩家或者电脑的落子情况
	char board[ROW][COL];
	char ret = 0;
	//初始化一下棋盘为全空格
	init_board(board, ROW, COL);
	print_board(board, ROW, COL);

	while (1)
	{
		player_move(board, ROW, COL);
		print_board(board, ROW, COL);
		//判断输赢
		ret = is_win(board, ROW, COL);
		if (ret != 'C')
		{
			break;
		}
		computer_move(board, ROW, COL);
		print_board(board, ROW, COL);
		//判断输赢
		ret = is_win(board, ROW, COL);
		if (ret != 'C')
		{
			break;
		}
	}
	if (ret == '#')
		printf("电脑赢了\n");
	else if (ret == '*')
		printf("玩家赢了\n");
	else if (ret == 'Q')
		printf("平局\n");
}

3.2判断输赢实现

static int is_full(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++)
		{
			if (board[i][j] == ' ')
				return 0;
		}
	}
	return 1;
}

char is_win(char board[ROW][COL], int row, int col)
{
	int i = 0;
	//判断三行
	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];
		}
	}
	//判断三列
	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];
		}
	}
	//对角线
	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];
	}

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

	//继续
	//没有玩家或者电脑赢，也没有平局，游戏继续
	return 'C';
}