C语言实现三子棋

game.h

#define _CRT_SECURE_NO_WARNINGS 1
#ifndef __GAME_H__
#define __GAME_H__
#include<stdio.h>
#include<stdio.h>
#include<string.h>
#include<time.h>

#define ROWS 3
#define COLS 3
void init_board(char board[ROWS][COLS], int row, int col);
void display_board(char board[ROWS][COLS], int row, int col);
void com_board(char board[ROWS][COLS], int row, int col);
void player_board(char board[ROWS][COLS], int row, int col);

int winner(char board[ROWS][COLS], int row, int col);
int loser(char board[ROWS][COLS], int row, int col);
#endif

game.c

#define _CRT_SECURE_NO_WARNINGS 1
#include"game.h"
void init_board(char board[ROWS][COLS], int row, int col)//棋盘初始化
{
	memset(board, ' ', ROWS*COLS*sizeof(board[0][0]));
}
void display_board(char board[ROWS][COLS], int row, int col)//棋盘的打印展示
{
	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");//棋盘的设计
		}
	}
}
void player_board(char board[ROWS][COLS], int row, int col)//玩家下棋
{
	int x = 0;
	int y = 0;
flag1:
	printf("请输入坐标:");
	scanf("%d%d", &x, &y);
	x = x - 1;
	y = y - 1;
	if ((x >= 0) && (x <= 2) && (y >= 0) && (y <= 2))
	{
		if (board[x][y] == ' ')
		{
			board[x][y] = 'x';
		}
		else
		{
			printf("输入错误\n");
			goto flag1;
		}
	}
	else
	{
		goto flag1;
	}
	printf("\n");
}
void comp_board(char board[ROWS][COLS], int row, int col)//电脑下
{
	srand((unsigned int)time(NULL));
	while (1)
	{
		int x = rand() % 3;
		int y = rand() % 3;
		if (board[x][y] == ' ')
		{
			board[x][y] = 'o';
			break;
		}
	}
	printf("\n");
}
int winner(char board[ROWS][COLS], int row, int col)
{
	int i = 0;
	int j = 0;
	for (i = 0; i < row; i++)
	{
		if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][1] == 'x')//人的行判断
		{
			return 1;
		}

		if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][1] == 'o')//电脑的行判断
		{
			return 2;
		}
	}
	for (j = 0; j < col; j++)
	{


		if (board[0][j] == board[1][j] && board[1][j] == board[2][j] && board[1][j] == 'x')//人的列判断
		{
			return 1;
		}
		if (board[0][j] == board[1][j] && board[1][j] == board[2][j] && board[1][j] == 'o')//电脑的列判断
		{
			return 2;
		}
	}
	if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] == 'x')//人的斜判断
	{
		return 1;
	}
	if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] == 'x')//人的斜判断
	{
		return 1;
	}


	if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] == 'o')//电脑的斜判断
	{
		return 2;
	}
	if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] == 'o')//电脑的斜判断
	{
		return 2;
	}
	int C = is_full(board, ROWS, COLS);//判断是否满了
	if (C == 5)
	{
		return 3;
	}
}
int is_full(char board[ROWS][COLS], 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 4;
			}
		}
	}
	return 5;
}

game.c

#define _CRT_SECURE_NO_WARNINGS 1
#include"game.h"
void venu()
{
	printf("*****************************\n");
	printf("******1.play 0.exit**********\n");
	printf("*****************************\n");


}
game()
{

	char board[ROWS][COLS];
	init_board(board, ROWS, COLS);//棋盘初始化
	display_board(board, ROWS, COLS);//打印棋盘
	while (1)
	{
		player_board(board, ROWS, COLS);//玩家下棋
		display_board(board, ROWS, COLS);
		if (winner(board, ROWS, COLS) == 1)
		{
			printf("你赢了\n");
			break;
		}
		else if (winner(board, ROWS, COLS) == 3)
		{
			printf("平局\n");
			break;
		}
		comp_board(board, ROWS, COLS);//电脑下棋
		display_board(board, ROWS, COLS);
		if (winner(board, ROWS, COLS) == 2)
		{
			printf("电脑赢了\n");
			break;


		}
		else if (winner(board, ROWS, COLS) == 3)
		{
			printf("平局\n");
			break;
		}
	}
}
int main()
{
	int input = 0;
	venu();
	do
	{
		printf("请选择 ：\n");
		scanf("%d", &input);
		switch (input)
		{
		case 1:
			game();
			break;
		case 0:
			printf("退出\n");
			break;
		default:
			printf("输入错误");
			break;


		}
	} while (input);
	return 0;
}

下图为运行结果：