【C语言】三子棋

创建一个头文件game.h：游戏代码的声明（函数声明、符号定义）

创建两个源文件game.c：游戏代码的实现

                            test.c：测试游戏的逻辑

game.h：

#pragma once//预处理指令，保证头文件只能被编译一次

//源文件需要的头文件可以写在game.h中，这样源文件只要包含了game.h就包含了这些头文件
#include 
#include 
#include 

//如果要修改ROW和COL的值，只需要修改#define这两行代码即可
#define ROW 3
#define COL 3

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

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

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

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

//判断输赢
char IsWin(char board[ROW][COL], int row, int col);

game.c：

#include "game.h"//game.h中包含了所需要的头文件

//初始化棋盘，令二维数组每个元素都是空格
void InitBoard(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] = ' ';
		}
	}
}

//打印棋盘的第一个版本
//void DispalyBoard(char board[ROW][COL], int row, int col)
//{
//	int i = 0;
//	for (i = 0; i < row; i++)
//	{
//		//打印数据
//		printf(" %c | %c | %c n", board[i][0], board[i][1], board[i][2]);
//		//打印分割信息
//		if(in");
	while (1)
	{
		printf("请输入坐标:>");
		scanf("%d %d", &x, &y);
		//坐标范围合法的判断
		if (x >= 1 && x <= row && y >= 1 && y <= col)
		{
			if (board[x - 1][y - 1] == ' ')
			{
				board[x - 1][y - 1] = '*';
				break;
			}
			else
			{
				printf("坐标被占用，不能下棋，请选择其他位置n");
			}
		}
		else
		{
			printf("坐标非法，请重新输入n");
		}
	}
}

//电脑下棋，在空格子随机下棋
void ComputerMove(char board[ROW][COL], int row, int col)
{
	printf("电脑下棋:>n");
	int x = 0;
	int y = 0;
	while (1)
	{
		x = rand() % row;//0~2
		y = rand() % col;//0~2
		if (board[x][y] == ' ')
		{
			board[x][y] = '#';
			break;
		}
	}
}

//判断棋盘是否被占满
int IsFull(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;//没被占满返回0
			}
		}
	}
	return 1;//被占满返回1
}

//判断输赢
//玩家赢 - '*'
//电脑赢 - '#'
//平局 - 'Q'
//继续 - 'C'
char IsWin(char board[ROW][COL], int row, int col)
{
	//行
	int i = 0;
	for (i = 0; i < row; i++)
	{
		if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][1] != ' ')
		{
			return board[i][1];
		}
	}
	//列
	int j = 0;
	for (j = 0; j < col; j++)
	{
		if (board[0][j] == board[1][j] && board[1][j] == board[2][j] && board[1][j] != ' ')
		{
			return board[1][j];
		}
	}
	//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 (IsFull(board, row, col))
	{
		return 'Q';
	}
	//游戏继续
	return 'C';
}

test.c：

#include "game.h"

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

//游戏
void game()
{
	char ret = 0;
	char board[ROW][COL] = {0};
	InitBoard(board, ROW, COL);
	DispalyBoard(board, ROW, COL);
	//下棋
	while(1)
	{
		PlayerMove(board, ROW, COL);
		//判断输赢
		ret = IsWin(board, ROW, COL);
		if (ret != 'C')
		{
			break;
		}
		DispalyBoard(board, ROW, COL);
		ComputerMove(board, ROW, COL);
		//判断输赢
		ret = IsWin(board, ROW, COL);
		if (ret != 'C')
		{
			break;
		}
		DispalyBoard(board, ROW, COL);
	}
	if (ret == '*')
	{
		printf("玩家赢n");
	}
	else if (ret == '#')
	{
		printf("电脑赢n");
	}
	else
	{
		printf("平局n");
	}
	DispalyBoard(board, ROW, COL);
}

int main()
{
	srand((unsigned int)time(NULL));//设置随机数种子
	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);
	return 0;
}