C语言实现三子棋

 主函数的实现：test.cpp

#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include"game.h"

//测试三子棋游戏
void menu() {
	printf("*********************************\n");
	printf("******* 1. play  0. exit  *******\n");
	printf("*********************************\n");
}
//游戏的整个实现
void game() {
	char ret = 0;
	//数组-存放走出的棋盘信息
	char board[ROW][COL] = { 0 }; //全部空格
	//初始化棋盘
	InitBoard(board,ROW,COL);
	//打印棋盘
	DisplayBoard(board,ROW,COL);
	//下棋
	while (1) 
	{
		//玩家下棋
		PlayerMove(board, ROW, COL);
		DisplayBoard(board, ROW, COL);
		//判断玩家是否赢
		ret = IsWin(board, ROW, COL);
		if (ret != 'C')
		{
			break;
		}
		//电脑下棋	
		ComputerMove(board,ROW,COL);
		DisplayBoard(board, ROW, COL);
		//判断电脑是否赢
		ret = IsWin(board,ROW,COL);
		if (ret != 'C')
		{
			break;
		}
	}
	if (ret == '*')
	{
		printf("玩家赢\n");
	}
	else if (ret == '#')
	{
		printf("电脑赢\n");
	}
	else {
		printf("平局");
	}
}
void test() {
	int input = 0;
	srand((unsigned int)time(NULL));
	do
	{
		menu();
		printf("请选择：>>");
		scanf("%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();
	return 0;
}

game.h：定义一些常量和函数

#pragma once
#define ROW 3
#define COL 3

#include<stdlib.h>
#include<time.h>

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);

//告诉我们四种游戏的状态
//玩家赢  '*'
//电脑赢  '#'
//平局    'Q'
//继续    'C'
char IsWin(char board[ROW][COL], int row, int col);

game.cpp：函数的实现

#define _CRT_SECURE_NO_WARNINGS 1
#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] = ' ';
		}
	}
}

void DisplayBoard(char board[ROW][COL], int row, int col) {
	int i = 0;
	for (i = 0; i < row; i++) {
		//1.打印一行的数据
		for (int j = 0; j < col; j++) {
			printf(" %c ", board[i][j]);
			if (j < col - 1) 
			   printf("|");
		}
		printf("\n");
		if (i < row - 1) {
			for (int 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, y = 0;
	printf("玩家走:>>\n");
	while (1) {
		printf("请输入要下的坐标:>>");
		scanf("%d%d", &x, &y);
		//判断x,y坐标的合法性
		if (x >= 1 && x <= row && y >= 1 && y <= col)
		{
			if (board[x - 1][y - 1] == ' ') {
				board[x - 1][y - 1] = '*';
				break;
			}
			else {
				printf("该坐标被占用\n");
			}
		}
		else {
			printf("坐标非法，请重新输入!\n");
		}

	}
	
}

void ComputerMove(char board[ROW][COL], int row, int col) 
{
	int x = 0, y = 0;
	printf("电脑走：>\n");
	while (1) {
		x = rand() % row;
		y = rand() % col;
		if (board[x][y] == ' ') {
			board[x][y] = '#';
			break;
		}
	}
}
//返回1表示棋盘满了，返回0表示棋盘没满
int IsFull(char board[ROW][COL], int row, int col) {
	int i = 0, j = 0;
	for (i = 0; i < row; i++) {
		for (j = 0; j < col; j++) {
			if (board[i][j] == ' ')
				return 0; //没满
		}
	}
	return 1;  //满了
}
char IsWin(char board[ROW][COL], int row, int col) {
	int i = 0;
	//横三行
	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];
		}
	}
	//竖三列
	for (i = 0; i < row; i++) {
		if (board[0][i] == board[1][i] && board[1][i] == board[2][i] && board[0][i] != ' ')
		{
			return board[1][i];
		}
	}
	//对角线判断
	if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] != ' ') {
		return board[1][1];
	}
	if (board[2][0] == board[1][1] && board[1][1] == board[0][2] && board[1][1] != ' ') {
		return board[1][1];
	}
	//判断平局
	if (1 == IsFull(board, ROW, COL)) {
		return 'Q';
	}
	return 'C';
}