三子棋

• 三个文件(game.h;game.c;test.c)

game.h

#define ROW 3
#define COL 3
#include <stdio.h>

//头文件，才能使用time和srand
#include<stdlib.h>
#include <time.h>

//声明
void ClearBoard(char board[ROW][COL], int row, int col);
void DisplayBoard(char board[ROW][COL], int row, int col);
void PlayerMove(char board[ROW][COL], int row,int col );
void ComputerMove(char board[ROW][COL], int row, int col);
int IsFull(char board[ROW][COL], int row, int col);

// 1.玩家赢*
// 2.电脑赢0
// 3.平局Q
// 3.继续C
char IsWin(char board[ROW][COL], int row, int col);

game.c

#define _CRT_SECURE_NO_WARNINGS 1
#include "game.h"
void ClearBoard(char board[ROW][COL], int row, int col)
{
	int i, j;
	for (i = 0; i < row; i++)
	{
		for (j = 0; j < col; j++)
		{
			board[i][j] = ' ';
		}
	}
}   

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

void PlayerMove(char board[ROW][COL], int row, int col)
{
	int x, y;
	printf("请玩家落子：\n");
	while (1)
	{
		printf("请输入坐标：\n");
		printf("---行---列---\n");
		scanf("%d%d", &x, &y);
		//判断坐标合法性
		if (x - 1 >= 0 && x - 1 < row && y - 1 >= 0 && y - 1 < col)
		{
			//如果该坐标没有元素，则落子；如果改坐标有元素，则重新落子
			if (board[x - 1][y - 1] == ' ')
			{
				board[x - 1][y - 1] = '*';
				break;
			}
			else
			{
				printf("该位置已经有子，请重新输入！\n ");
			}
		}
		else
		{
			printf("该坐标错误，请重新输入！\n");
		}
	}
	
}

void ComputerMove(char board[ROW][COL], int row, int col)
{
	int x, y;
	printf("电脑走\n");
	
	while(1)
	{
		x = rand() % row;
		y = rand() % col;
		if (board[x][y] == ' ')
		{
			board[x][y] = '0';
			break;
		}
	} 

}

char IsWin(char board[ROW][COL], int row, int col)
{
	int i;
	//横三行
	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];
		}
	}
	//竖三列
	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[0][0] != ' ')
	{
		return board[0][0];
	}
	if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[0][2] != ' ')
	{
		return board[1][1];
	}
	if (1 == IsFull(board, ROW, COL))
	{
		return 'Q';
	}
	return 'C';
}

int IsFull(char board[ROW][COL], int row, int col)
{
	int i, j;
	for (i = 0; i < row; i++)
	{
		for (j = 0; j < col; j++)
		{
			if (board[i][j] == ' ')
			{
				return 0;
			}
		}
	}
	return 1;
} 

test.c

#define _CRT_SECURE_NO_WARNINGS 1
#include "game.h"

void game()
{
	//创建棋盘
	char board[ROW][COL] = { 0 };

	//初始化棋盘，使里面全部为空格
	ClearBoard(board, ROW, COL);

	//展示棋盘
	DisplayBoard(board, ROW, COL);

	//下棋
	char r;

	while (1)
	{
		//玩家下棋
		PlayerMove(board,ROW,COL);
		DisplayBoard(board, ROW, COL);
		//判断玩家是否赢
		IsWin(board, ROW, COL);
		r = IsWin(board, ROW, COL);
		if (r != 'C')
		{
			break;
		}
		
		//电脑下棋
		ComputerMove(board, ROW, COL);
		DisplayBoard(board, ROW, COL);
		//判断电脑是否赢
		r = IsWin(board, ROW, COL);
		IsWin(board, ROW, COL);
		if (r != 'C')
		{
			break;
		}
	}
	if (r == '*')
	{
		printf("玩家赢！\n");
	};
	if (r == '0')
	{
		printf("电脑赢\n");
	}
	if (r == 'Q')
	{
		printf("平局\n");
	}

}

void mean()
{
	printf("*********************************\n");
	printf("********* 1.PLAY 0 QUIT *********\n"); 
	printf("*********************************\n");
}

void test()
{
	int input = 0;
	srand((unsigned int)time(NULL));//srand（随机数生成器）
	do 
	{
		mean();
		printf("请选择>\n");
		scanf("%d", &input);
		switch (input)
		{
		case 1:
			printf("三子棋\n");
			game();
			break;
		case 0:
			printf("退出游戏\n");
			break;
		default:
			printf("选择错误，请重新选择！\n");
			break;
		}
	} while (input);
	

}

int main() 
{
	test();
	return 0;
}

总结

• 头文件里（gema.h）可以放一些项目里经常需要的头文件（#include<stdio.h>）只需要引用game.h就能全部引用.
• rand()函数是个伪随机函数，需要添加srand((unsigned int)time(NULL));日后在学。
• 逻辑很重要，需要简单拆分。
• 三个文件

game.h 存放声明
test.c 引用函数
game.c 编写函数

标签：实现,三子,C语言,int,col,board,row,COL,ROW
来源： https://blog.csdn.net/cyw887733/article/details/123139074