c语言—三子棋

创建一个game.h头文件

#ifndef  __GAME_H__//声明开始结束
#define __GAME_H__//防止头文件重复调用
#include<string.h>
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
void Board(char board[][3], int i, int j);//创建一个棋盘
void ShowBoard(char board[][3], int row, int col);//将棋盘显示在输出区
void PlayerMove(char board[][3], int row, int col);//玩家行动
char IsWin(char board[][3], int row, int col);//判断胜利
void ComputerMove(char board[][3], int row, int col);//电脑行动
#endif//__GAME_H__

创建game.c
我们需要创建一个3*3的棋盘并用——，|隔开，形成类似下图所示区域

void Board(char board[][3], int i, int j)
{
	int m = 0,n = 0 ;
	for (m = 0; m <= i; m++)
	{
		for (n = 0; n <= j; n++)
		{
			board[m][n] = ' ';//清空函数
		
		}
	
	}
}
void ShowBoard(char board[][3], int row, int col)
{
	int i = 0;
	int j = 0;
	for (i = 0; i < row; i++)
	{
		for (j = 0; j < col; j++)
		{
			printf(" %c ", board[i][j]);
			if (j < col - 1)
			{
				printf("|");//先打印“ ”再打印 |
			}
		}
		printf("\n");

		if (i < row - 1)
		{
			for (j = 0; j < col; j++)
			{
				printf("---");
				if (j < col - 1)
				{
					printf("|");//
				}
			}
			printf("\n");
		}
	}
}

玩家行动时需要注意当前位置是否被占用

void PlayerMove(char board[][3], int row, int col)
{
	int x = 0;
	int y = 0;
	while (1)
	{
		printf("请输入1-3的坐标：");//X
		scanf("%d%d", &x, &y);//1,1
		if (x >= 1 && x <= 3 && y >= 1 && y <= 3)
		{
			if (board[x - 1][y - 1] == ' ')//空字符则输入X
			{
				board[x - 1][y - 1] = 'X';
				break;
			}
			else
			{
				printf("此位置已经被占用了\n");
			}
		}
		else
		{
			printf("坐标位置不合法\n");
		}
	}
}

电脑输入同理，随机输入需要加入随机种子srand((unsigned int)time(NULL));

void ComputerMove(char board[][3], int row, int col)
{

	int x = 0;
	int y = 0;
	printf("电脑移动\n");
	while (1)
	{
		x = rand() % row + 1;//3  [0-3)   [1-3]//随机数
		y = rand() % col + 1;
		if (board[x - 1][y - 1] == ' ')
		{
			board[x - 1][y - 1] = 'O';
			break;
		}
	}
}

判断是否胜利

static int IsFull(char board[][3], int row, int col)//判断棋盘是否为满
{
	int i = 0;
	for (i = 0; i < row; i++)
	{
		int j = 0;
		for (j = 0; j < col; j++)
		{
			if (board[i][j] == ' ')
			{
				return 0;//没有满
			}
		}
	}
	return 1;//满
}

char IsWin(char board[][3], 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] != ' ')//行相同
		{
			return board[i][0];
		}
		if (board[0][i] == board[1][i] && board[1][i] == board[2][i]
			&& board[0][i] != ' ')//列相同
		{
			return board[0][i];
		}
		if (board[0][0] == board[1][1] && board[1][1] == board[2][2]
			&& board[0][0] != ' ')//斜线相同
		{
			return board[0][0];
		}

		if (board[0][2] == board[1][1] && board[1][1] == board[2][0]
			&& board[0][0] != ' ')//斜线相同
		{
			return board[0][2];
		}

		//平局
		if (IsFull(board, row, col) == 1)//棋盘满且么满足上述条件
		{
			return 'Q';
		}
	}
	return ' ';//即没有赢，也没有平局
}

创建class.c

#define _CRT_SECURE_NO_WARNINGS 1
#include"game.h"
void game()
{
	char ret = 0;
	char board[3][3] = { 0 };
	Board(board, 3, 3);//定义棋盘
	ShowBoard(board, 3, 3);//初始化棋盘
	while (1)
	{
		PlayerMove(board, 3, 3);
		ret = IsWin(board, 3, 3);//判断结果赋值
		if (ret != ' ')
		{
			break;//玩家胜出或者平局
		}
		ShowBoard(board, 3, 3);打印棋盘

		ComputerMove(board, 3, 3);
		ret = IsWin(board, 3, 3);
		if (ret != ' ')
		{
			break;//电脑胜出或者平局
		}
		ShowBoard(board, 3, 3);
	}
	if (ret == 'Q')
	{
		printf("平局\n");
	}
	else if (ret == 'X')
	{
		printf("玩家胜出\n");
	}
	else if (ret == 'O')
	{
		printf("电脑胜出\n");
	}
	return 0;
}

int main()
{
	printf("***********************\n");
	printf("*********1.play********\n");
	printf("*********0.exit********\n");
	printf("***********************\n");
	
	int input = 0;
	srand((unsigned int)time(NULL));//随机数种子
	do//do循环可先执行一次
	{
		printf("请输入您的操作：\n");
		scanf("%d",&input);//从键盘接收字符
		switch(input)
		{
		case 1:
			printf("游戏开始\n");
			game();
			break;
		case 0:
			printf("游戏退出\n");
			break;
		default:
			printf("请输入正确的数字\n");
			break;
		}
	}while(input);
	printf("游戏退出\n");
	return 0;
}