三子棋（還可以通過改變宏實現五子棋或更多）

頭文件

chess.h

#ifndef _CHESS_H_
#define _CHESS_H_

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <Windows.h>
#include <math.h>
#include <time.h>


#define ROW 3
#define COL 3


void menu();
void InitBoard(char board[ROW][COL], int row, int col);
void DisplayBoard(char board[ROW][COL], int row, int col);
void ComputerMove(char board[ROW][COL], int row, int col);
void PlayerMove(char board[ROW][COL], int row, int col);
int IsFull(char board[ROW][COL], int row, int col);
char IsWin(char board[ROW][COL], int row, int col);
void game();





#endif // !_CHESS_H_所有變量聲明

頭文件及其各個函數聲明

函數定義

test.c

#include "chess.h"

void menu()
{
	printf("**********************************************\n");
	printf("***************  歡迎來到三子棋  *************\n");
	printf("**********************************************\n");
	printf("************      1. play    *****************\n");
	printf("************      0. exit    *****************\n");
	printf("**********************************************\n");
}

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[0][0],' ',row*col*sizeof(board[0][0]));
}

void DisplayBoard(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 < row - 1)
		{
			printf("---|---|---");
		}
	}*/

	int i = 0;
	for (i = 0; i < row; i++)
	{
		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 ComputerMove(char board[ROW][COL], int row, int col)
{
	int x = 0;
	int y = 0;
	printf("電腦走:-->\n\n");
	while (1)
	{
		x = rand() % row;
		y = rand() % col;
		if (board[x][y] == ' ')
		{
			board[x][y] = 'X';
			break;
		}
	}
}

void PlayerMove(char board[ROW][COL], int row, int col)
{
	int x = 0;
	int y = 0;
	printf("玩家走:-->\n\n");
	while (1)
	{
		printf("請輸入座標：-->\n");
		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] = '0';
				break;
			}
			else
			{
				printf("座標被佔用，請重新輸入:-->\n");
			}
		}
		else
		{
			printf("座標非法，請重新輸入:-->\n");
		}
	}
}

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[2][2] == board[1][1] && 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];
	}
	//說明沒有贏,判斷平局
	if (IsFull(board, row, col))// == 1
	{
		return 'Q';
	}
	return ' ';
}

void game()
{
	//printf("玩遊戲\n");
	char board[ROW][COL] = { 0 };
	char ret = 0;
	InitBoard(board, ROW, COL);//電腦
	DisplayBoard(board, ROW, COL);//玩家
	while (1)
	{
		ComputerMove(board, ROW, COL);//電腦移動
		ret = IsWin(board, ROW, COL);
		if (ret != ' ')
		{
			break;
		}
		DisplayBoard(board, ROW, COL);
		PlayerMove(board, ROW, COL);//玩家移動
		ret = IsWin(board, ROW, COL);
		if (ret != ' ')
		{
			break;
		}
		DisplayBoard(board, ROW, COL);
	}
	if (ret == 'X')
	{
		printf("電腦贏！\n\n");
	}
	else if (ret == '0')
	{
		printf("玩家贏！\n\n");
	}
	else if (ret == 'Q')
	{
		printf("平局！\n\n");
	}
	DisplayBoard(board, ROW, COL);
}

頭文件中的函數定義

主函數

chess.c

#include "chess.h"


int main()
{
	int input = 0;
	srand((unsigned int)time(NULL));
	do {
		menu();

		printf("請選擇：-->\n");
		scanf("%d", &input);

		switch (input)
		{
		case 1:
			game();
			break;

		case 0:
			printf("退出\n");
			break;

		default:
			printf("選擇錯誤，重新選擇\n");
			break;
		}
	} while (input);
	return 0;
}
//IsWin
//'X'  電腦
//'0'   玩家
//'Q'   平局
//' '   繼續

代碼的主體部分

程序截圖：