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

#define ROW 3
#define COL 3

//初始化棋盤
void InitBoard(char board[ROW][COL], int row, int col);

//打印棋盤
void DisplayBoard(char board[ROW][COL], int row, int col);

//玩家走
void PlayerMove(char board[ROW][COL], int row, int col);

//電腦走
void ComputerMove(char board[ROW][COL], int row, int col);

//判斷輸贏 此時函數(shù)有返回值了 不能再用void了，返回值為字符要用char
char CheckWin(char board[ROW][COL], int row, int col);

#include"game.h"
void InitBoard(char board[ROW][COL], int row, int col)//將數(shù)組全部初始化為空格
{
 int i = 0;
 for (i = 0; i < row; i++)
 {
 int j = 0;
 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++)
 {
 int j = 0;
 for (j = 0; j < col; j++)
 {
 printf(" %c ", board[i][j]);
 if (j<col-1)//一行三個空格只打印兩個'| '即可
 printf("|");
 }
 printf("\n");
 if (i < row - 1)//一列三個空格也只需要打印兩排‘ --- '即可
 {
 for (j = 0; j < col; j++)
 {
 printf("---");
 if (j < col - 1)
 printf("|"); //同理一行三個空格只打印兩個' | '即可
 }
 printf("\n");
 }
 }
}

void PlayerMove(char board[ROW][COL], int row, int col)
{
 int x;//橫坐標
 int y;//縱坐標
 while (1)
 {
 printf("請輸入坐標->\n");
 scanf("%d%d", &x, &y);
 if (x > 0 && x <= row &&y > 0 && y <= col)//判斷坐標的合法性，橫縱坐標是否在1到3之間
 {
 if (board[x - 1][y - 1] != ' ')
 {
 printf("坐標被占用，請重新輸入\n");
 }
 else
 {
 board[x-1][y-1] = '*';
 break;//玩家落子后循環(huán)跳出
 } 
 }
 else
 {
 printf("坐標非法，請重新輸入\n");
 }
 }
}
void ComputerMove(char board[ROW][COL], int row, int col)
{
 printf("電腦走\n");
 while (1)
 {
 int x = rand() % row;//rand()為獲得隨機值得函數(shù)，獲取的隨機值模row即3就可以得到在0到2之間的一個隨機值
 int y = rand() % col;//縱坐標同理
 
 if (board[x][y] == ' ')
 {
 board[x][y] = '#';
 break;//電腦落子后跳出循環(huán)
 }
 }
}

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 CheckWin(char board[ROW][COL], int row, int col)//判斷贏得情況，返回值為字符
   //玩家贏返回值為 * //電腦贏時返回值為 # 
 //平局時返回值為 Q //仍可以下棋且為分勝負時返回值為 C
{
 int i = 0;
 for (i = 0; i < row; i++)//一行相同時
 {
 if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[0][i] != ' ')
 {
 return board[i][0];//返回值為board[i][0]不用考慮是返回 * 還是 #兩者都可以返回
 }
 
 }
 for (i = 0; i < col; i++)//一列相同時
 {
 if (board[0][i] == board[1][i] && board[1][i] == board[2][i] && board[0][i] != ' ')
 {
 return board[0][i];
 }
 }
 //對角線相同時的兩種情況
 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];
 }
 //棋盤全部下滿仍未分勝負的情況
 if (IsFull(board, row, col) == 1)//IsFull為判斷棋盤是否全滿時，當全滿時返回值為1，未滿時為0
 {
 return 'Q';
 }
 return 'C';//返回值為C游戲繼續(xù)
}

#include"game.h"

void menu()
{
 printf("**********************\n");
 printf("****** 1.PIAY ******\n");
 printf("****** 2.EXIT ******\n");
 printf("**********************\n");
}
void game()
{
 char ret;
 char board[ROW][COL];//數(shù)據(jù)是一個二維數(shù)組
 InitBoard(board, ROW, COL);//初始化棋盤，將棋盤全初始化為空格
 DisplayBoard(board, ROW, COL);
 while (1)
 {

 PlayerMove(board, ROW, COL);//棋手下棋
 ret = CheckWin(board, ROW, COL);
 if (ret != 'C')
 {
 break;
 }
 DisplayBoard(board, ROW, COL);//打印棋盤

 ComputerMove(board, ROW, COL);//電腦移動
 ret = CheckWin(board, ROW, COL);
 if (ret != 'C')
 {
 break;
 }
 DisplayBoard(board, ROW, COL);
 }
 if (ret == '*')
 {
 printf("玩家獲勝\n");
 }
 else if (ret == '#')
 {
 printf("電腦獲勝\n");
 }
 else if (ret == 'Q')
 {
 printf("未分勝負，平局\n");
 }
 DisplayBoard(board, ROW, COL);
}
int main()
{
 srand((unsigned int)time(NULL));//srand 函數(shù)和rand 函數(shù)配合使用可生成一個隨機值
 int input = 0;
 do
 {
 menu();//打印菜單
 printf("請輸入： 1->開始游戲 0->退出游戲\n");
 scanf("%d", &input);
 switch (input)
 {
 case 1:
 game();//三子棋游戲
 break;
 case 0:
 printf("退出游戲\n");
 break;
 default:
 printf("輸入錯誤，請重新輸入.\n");
 break;
 }
 } while (input);
 return 0;
}