三子棋的实现

1.game.h头文件

#define ROW 3
#define COL 3
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
//初始化棋盘
void init(char board[ROW][COL],int row,int col);
//打印棋盘
void displayboard(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);

2.test.c源文件

#include"game.h"
void menu()
{
	printf("*********************\n");
	printf("***1.play   0.exit***\n");
	printf("*********************\n");
}

void game()
{
	char ret=0;
	char board[ROW][COL]={0};
	//初始化棋盘的函数
	init(board,ROW,COL);
	displayboard(board,ROW,COL);//打印棋盘
	//下棋
	while(1)
	{
		
	   playermove(board,ROW,COL);
       //判断输赢
        ret=iswin(board,ROW,COL);
		if(ret!='!')
		 {
		   break;
		 }	 
	   displayboard(board,ROW,COL);
	   computermove(board,ROW,COL);
       //判断输赢
	   ret=iswin(board,ROW,COL);
	   if(ret!='!')
		 {
		   break;
		 } 
	   displayboard(board,ROW,COL);	 	    
	}
	if(ret=='*')
	   {
		   printf("玩家赢\n");
		   displayboard(board,ROW,COL);
	   }
	   else if(ret=='#')
	   {
		   printf("电脑赢\n");
		   displayboard(board,ROW,COL);
	   }
	   else
	   {
		   printf("平局\n");
	   }  
	  
}
int main()
{	
	int i=0;
	srand((unsigned int)time(NULL));
	do
	{
		menu();//打印菜单
		printf("请输入：");
		scanf("%d",&i);
		switch(i)
		{
		case 1:
			game();
			break;
		case 0:
			printf("退出游戏\n");
			break;
		default:
			printf("输入错误，重新输入\n");
			break;
		}
	}while(i);
	return 0;
}

3.game.c源文件

#include"game.h"
void init(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]=' ';
		}
	}
}

void displayboard(char board[ROW][COL],int row,int col)
{
	int i=0;
	int j=0;
	for(i=0;i<row;i++)
	{
		//打印数据
		for(j=0;j<col;j++)
		{
			printf("%c ",board[i][j]);
			if(j<col-1)
				printf("|");
		}
		printf("\n");
		//打印分割行
		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=0;
	int y=0;
	printf("玩家下棋：");
	while(1)
	{
		scanf("%d %d",&x,&y);
		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，请重新选择位置\n");
		}
		else
			printf("坐标输入非法，请重新输入:\n");
	}	
}

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


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 iswin(char board[ROW][COL],int row,int col)
{
	int i=0;
	int j=0;
    //行
	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
		if(board[0][j]==board[1][j]&&board[1][j]==board[2][j]&&board[0][j]!=' ')
		{
			return board[1][j];
		}
		//对角线
		if(board[0][0]==board[1][1]&&board[1][1]==board[2][2]&&board[0][0]!=' ')
		{
			return board[1][1];
		}
		if(board[0][2]==board[1][1]&&board[1][1]==board[2][0]&&board[0][2]!=' ')
		{
			return board[1][1];
		}
	}
	//没人赢，平局
	if(is_full(board,row,col))
	{
		return '~';
	}
	//继续
	return '!';
}