C语言实现三子棋

注：玩家输入和电脑输入不要写在一个函数之内，否则不容易判断玩家输入是否赢以及电脑输入是否赢。所以我们将分别写两个函数Playermove和Computermove。

//geme.h

#ifndef __GAME_H__
#define __GAME_H__

#define ROW 3
#define COL 3
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<time.h>

void menu();
void game(char arr[ROW][COL],int row,int col);
void Playermove(char arr[ROW][COL], int row, int col);
void Displaygame(char arr[ROW][COL], int row, int col);
char isWin(char arr[ROW][COL], int row ,int col);
int is_full(char arr[ROW][COL], int row, int col);
void Computermove(char arr[ROW][COL], int row, int col);

#endif //__GAME_H__

//test.c

#define _CRT_SECURE_NO_WARNINGS 1
//|---|---|---|
//|   |   |   |
//|---|---|---|
//|   |   |   |
//|---|---|---|
//|   |   |   |
//|---|---|---|
#include "game.h"
#define ROW 3
#define COL 3
int main()
{
	char arr[ROW][COL] = { 0 };
	int input = 0;
	srand((unsigned int )time(NULL));       //获取随机值，前提
	do
	{
		menu();      //打印菜单
		printf("玩游戏：1；退出游戏：0；>>\n");
		scanf("%d", &input);
		switch (input)
		{
		case 1:
			game(arr,ROW,COL);
			break;
		case 0:
			exit(1);       //退出系统
			break;
		default:
			printf("输入错误，请重新输入:>>\n");

		}
	} while (input);
	system("pause");
	return 0;
}

//game.c

#define _CRT_SECURE_NO_WARNINGS 1
#include "game.h"
void menu()
{
	printf("****************************************\n");
	printf("**********      1.  play      **********\n");
	printf("**********      0.  exit      **********\n");
	printf("****************************************\n");
}
int is_full(char arr[ROW][COL], int row, int col)     //判断平局
{
	int i = 0;
	int j = 0;
	for (i = 0; i < row; i++)
	{
		for (j = 0; j < col; j++)
		{
			if (arr[i][j] == ' ')         
			{
				return 0;                 
			}
		}
	}
	return 1;            
}
char isWin(char arr[ROW][COL], int row, int col)       //判断谁赢  
{
	int i = 0;
	int j = 0;
	for (i = 0; i < row; i++)
	{
		if (arr[i][0] == arr[i][1] && arr[i][1] == arr[i][2] && arr[i][2]!=' ')
		{
			return arr[i][0];
		}	
	}
	for (i = 0; i < col; i++)
	{
		if (arr[0][j] == arr[1][j] && arr[1][j] == arr[2][j] && arr[2][j]!=' ')
		{
			return arr[0][j];
		}
	}
    if ((arr[0][0] == arr[1][1]) && (arr[1][1] == arr[2][2]) && arr[2][2] != ' ')
	{
		return arr[0][0];
	}
	else if ((arr[0][2] == arr[1][1]) && (arr[1][1] == arr[2][0]) && arr[2][0] != ' ')
	{
		return arr[0][2];
	}
	else if (is_full(arr,ROW,COL) == 1)
	{
		return 'P';
	}
	else
	{
		return ' ';
	}
}
void Displaygame(char arr[ROW][COL], int row, int col)       //打印棋盘
{
	int i = 0;
	for (i = 0; i < row; i++)
	{
		int j = 0;
		printf("|---|---|---|\n");
		for (j = 0; j < col; j++)
		{
			printf("| %c ", arr[i][j]);
		}
		printf("|");
		printf("\n");
	}
	printf("|---|---|---|\n");
}
void  Playermove(char arr[ROW][COL], int row, int col)        //玩家走
{
	int x = 0;
	int y = 0;
	printf("玩家走:>>");
	scanf("%d%d", &x, &y);
	if ((x >= 1 && x <= row) && (y >= 1 && y <= col))       
	{
		while ((arr[x - 1][y - 1] != ' '))       
		{
			printf("该坐标已被占用请重新输入坐标！>>");
			scanf("%d%d", &x, &y);
			while ((x<1 || x>row) || (y<1 || y>col))        
			{
				printf("坐标非法\n");
				printf("请重新输入坐标！>>");
				scanf("%d%d", &x, &y);
			}
		}
		arr[x - 1][y - 1] = '0';
	}
	else                                
	{
		while ((x<1 || x>row) || (y<1 || y>col))
		{
			printf("坐标非法\n");
			printf("请重新输入坐标！>>");
			scanf("%d%d", &x, &y);
			while ((arr[x - 1][y - 1] != ' '))       
			{
				printf("该坐标已被占用请重新输入坐标！>>");
				scanf("%d%d", &x, &y);}
		}
		arr[x - 1][y - 1] = '0';
	}
	printf("\n");
}
void  Computermove(char arr[ROW][COL], int row, int col)                //电脑走
{
	printf("电脑走:>>\n");
	int a = rand() % 3;
	int b = rand() % 3;
	while (arr[a][b] != ' ')
	{
		a = rand() % 3;
		b = rand() % 3;
	}
	arr[a][b] = 'X';
}
void game(char arr[ROW][COL], int row, int col)
{
	memset(arr, ' ', row*col);         //memset对数组初始化
	Displaygame(arr, row, col);
	char res = 0;
	do
	{
		Playermove(arr, ROW, COL);
		Displaygame(arr, row, col);
	    res = isWin(arr, row, col);
		if (res != ' ')               //判断玩家输入，如果返回不为空格则跳出循环
		{
			break;
		}
		Computermove(arr, ROW, COL);
		Displaygame(arr, row, col);
		res = isWin(arr, row, col);      //在此判断电脑输入返回值
	} while (res == ' ');
		if (res == 'X')
		{
			printf("电脑赢\n");
		}
		else if (res == '0')
		{
			printf("玩家赢\n");
		}
		else if (res == 'P')
		{
			printf("平局\n");
		}
}