C语言编程实现三子棋

源码：

1.函数头：

#ifndef __GAME_H__
#define __GAME_H__

#include 
#include 
#include 
#include 

#define  ROW  3					//棋盘初始化大小
#define  COL  3

void init_board(char board[ROW][COL], int row, int col);		//棋盘初始化
void display_board(char board[ROW][COL], int row, int col);		//棋盘打印
void player_move(char board[ROW][COL], int row, int col);		
void computer_move(char board[ROW][COL], int row, int col);
char check_win(char board[ROW][COL], int row, int col);

#endif //__GAME_H__

2.主函数：

#include "game.h"

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

void game()			//游戏函数
{
	int ret = 0;
	char board[ROW][COL] = { 0 };			//棋盘数组
	srand((unsigned int)time(NULL));		

	init_board(board, ROW, COL);			
	
	while (1)					 //电脑先走，然后判断输赢，玩家走，接着判断输赢
	{
		computer_move(board, ROW, COL);
		if ((ret = check_win(board, ROW, COL)) != ' ')
		{
			break;
		}
		display_board(board, ROW, COL);
		player_move(board, ROW, COL);
		if ((ret = check_win(board, ROW, COL)) != ' ')
		{
			break;
		}
		display_board(board, ROW, COL);
	}
	if (ret == '*')
	{
		printf("you win!\n");
	}
	else if (ret == 'o')
	{
		printf("computer win!\n");
	}
	else if (ret == 'q')
	{
		printf("平局！");
	}
	display_board(board, ROW, COL);
}

int main()
{
	int input = 0;
	do
	{
		menu();
		scanf("%d", &input);
		switch (input)
		{
		case 0:
			break;
		case 1:
			game();
			break;
		default:
			printf("enter error! please enter again:\n");
			break;
		}
	}while(input);

	return 0;
}

3.游戏函数主体：

#include "game.h"

void init_board(char board[ROW][COL], int row, int col)
{
	memset(board, ' ', col*row*sizeof(char));
	//memset是以字节为单位，初始化内存块。当初始化一个字节单位的数组时，
	//可以用memset把每个数组单元初始化成任何你想要的值
}

void display_board(char board[ROW][COL], int row, int col)
{
	int i = 0;
	for (i = 0; i < row; i++)
	{
		printf(" %c | %c | %c \n", board[i][0], board[i][1], board[i][2]);
		if (i != 2)
		{
			printf("---|---|---\n");
		}
	}
}

void player_move(char board[ROW][COL], int row, int col)
{
	int a = 0;
	int b = 0;

	while (1)
	{
		printf("请输入坐标(a,b):\n");
		scanf("%d%d", &a, &b);
		a--;
		b--;
		if (((a >= 0) && (a <= 2)) &&
			((b >= 0) && (b <= 2)))
		{
			if (board[a][b] == ' ')
			{
				board[a][b] = '*';
				break;
			}
			else
			{
				printf("此处已落子！\n");
			}
		}
		else
		{
			printf("坐标错误！\n");
		}
	}
}

void computer_move(char board[ROW][COL], int row, int col)
{
	while (1)
	{
		int a = rand() % row;
		int b = rand() % col;
		if (board[a][b] == ' ')
		{
			board[a][b] = 'o';
			break;
		}
	}
}

static 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 check_win(char board[ROW][COL], int row, int col)
{
	int i = 0;
	for (i = 0; i