C语言：三子棋游戏

头文件：game.h:

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

void InitBoard(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);
char IsWin(char board[ROW][COL], int row, int col);
#endif//__GAME_H__

游戏实现模块 game.h：

#include<stdlib.h>
#include"game.h"
void InitBoard(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] = ' ';
	//	}
	//}
	memset(board,' ', row*col*sizeof(board[0][0]));//初始化棋盘
}
void DisplayBoard(char board[ROW][COL], int row, int col)
{
	int i = 0;
	for (i = 0; i < row; i++)
	{
		//打印一行
		/*printf(" %c | %c | %c \n", board[i][0], board[i][1], board[i][2]);
		if (i<row-1)
		printf("---|---|---\n");*/
		int j = 0;
		for(j = 0; j < col;j++)
		{
			printf(" %c ", board[i][j]);
			if (j < col - 1)
			printf("|");
		}
		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 = 0;
	int y = 0;
	printf("玩家走：>\n");
	while (1)
	{
		printf("请输入坐标（1-3）：>");
		scanf_s("%d%d", &x, &y);
		if (x >= 1 && x <= row&&y >= 1 && y <= col)
		{
			if (board[x-1][y-1] = ' ')
			{
				board[x-1][y-1] = 'X';
				break;
			}
			else
			{
				printf("坐标被占用。请重新输入！\n");
			}
		}

		else
		{
			printf("坐标非法,请重新输入！\n");
		}
	}
	
}
void ComputerMove(char board[ROW][COL], int row, int col)
{
	printf("电脑走:>\n");
	while (1)
	{
		int x = rand() % row;
		int y = rand() % col;
		if (board[x][y] == ' ')
		{
			board[x][y] = '0';
			break;
		}
	}
}
int IsFull(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;
	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];
		}
	}
	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];
		}
	}
	if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] != ' ')
	{
		return board[1][1];
	}
	if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] != ' ')
	{
		return board[1][1];
	}
	//平局
	if(IsFull(board,row,col))
	{
		return 'Q';
	}
	//继续
	return ' ';
}

测试模块test.c：

#include<stdlib.h>
#include "game.h"
void menu()
{
	printf("******************************\n");
	printf("**** 1.play     0.exit   *****\n");
	printf("******************************\n");
}
//玩家赢---‘X’
//电脑赢---'0'
//平局---'Q'
//继续---' '
void game()
{
	char board[ROW][COL] = { 0 };
	char ret = 0;
	InitBoard(board, ROW, COL);
	DisplayBoard(board, ROW, COL);
	while (1)
	{
		PlayerMove(board,ROW,COL);
		ret = IsWin(board,ROW,COL);
		if (ret != ' ')
		{
			break;
		}
		DisplayBoard(board, ROW, COL);
		ComputerMove(board, ROW, COL);
		ret = IsWin(board, ROW, COL);
		if (ret != ' ')
		{
			break;
		}
		DisplayBoard(board, ROW, COL);
	}

	DisplayBoard(board, ROW, COL);
	if (ret == 'X')
	{
		printf("玩家赢\n");
	}
	else if (ret == '0')
	{
		printf("电脑赢\n");
	}
	else if (ret == 'Q')
	{
		printf("平局\n");
	}
}


void test()
{
	int input = 0;
	srand((unsigned int)time(NULL));
	do
	{
		menu();
		printf("请选择：>");
		scanf_s("%d", &input);
		switch (input)
		{
		case 1:
			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();
	system("pause");
	return 0;
}