# 各函数代码的实现

## 初始化二维数组

``````void InitBoard(char Board[ROW][COL], int row, int col)
{
for (int i = 0; i < row; i++)
{
for (int j = 0; j < col; j++)
{
Board[i][j] = ' ';
}
}
}
``````

## 打印棋盘

``````void DisplayBoard(char Board[ROW][COL], int row, int col)
{
for (int i = 0; i < row; i++)
{
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");
}
}
``````

## 玩家下棋

``````void PlayMove(char Board[ROW][COL], int row, int col)
{

while (1)
{
int x = 0, y = 0;
printf("请输入坐标：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] = '#';
break;
}
else
printf("该位置已被占，请重新输入：n");
}
else
{
printf("输入错误，请重新输入：n");
}
}
}
``````

## 电脑下棋

``````void ComputerMove(char Board[ROW][COL], int row, int col)
{
int x = 0, y = 0;
while (1)
{
if (JudgeComputer(Board, ROW, COL))
{
for (int i = 0; i < row; i++)
{
if (Board[i][0] == Board[i][1] && Board[i][0] == '*' && Board[i][2] == ' ')
{
Board[i][2] = '*';
return;
}
else if (Board[i][0] == Board[i][2] && Board[i][0] == '*' && Board[i][1] == ' ')
{
Board[i][1] = '*';
return;
}
else if (Board[i][1] == Board[i][2] && Board[i][1] == '*' && Board[i][0] == ' ')
{
Board[i][0] = '*';
return;
}
}
for (int j = 0; j < col; j++)
{
if (Board[0][j] == Board[1][j] && Board[0][j] == '*' && Board[2][j] == ' ')
{
Board[2][j] = '*';
return;
}
else if (Board[0][j] == Board[2][j] && Board[0][j] == '*' && Board[1][j] == ' ')
{
Board[1][j] = '*';
return;
}
else if (Board[1][j] == Board[2][j] && Board[1][j] == '*' && Board[0][j] == ' ')
{
Board[0][j] = '*';
return;
}
}
if (Board[0][0] == Board[1][1] && Board[0][0] == '*' && Board[2][2] == ' ')
{
Board[2][2] = '*';
return;
}
else if (Board[0][0] == Board[2][2] && Board[0][0] == '*' && Board[1][1] == ' ')
{
Board[1][1] = '*';
return;
}
else if (Board[1][1] == Board[2][2] && Board[1][1] == '*' && Board[0][0] == ' ')
{
Board[0][0] = '*';
return;
}
else if (Board[0][2] == Board[1][1] && Board[0][2] == '*' && Board[2][0] == ' ')
{
Board[2][0] = '*';
return;
}
else if (Board[0][2] == Board[2][0] && Board[0][2] == '*' && Board[1][1] == ' ')
{
Board[1][1] = '*';
return;
}
else if (Board[2][0] == Board[1][1] && Board[2][0] == '*' && Board[0][2] == ' ')
{
Board[0][2] = '*';
return;
}
}
else if (JudgePlayer(Board, ROW, COL))
{
for (int i = 0; i < row; i++)
{
if (Board[i][0] == Board[i][1] && Board[i][0] == '#' && Board[i][2] == ' ')
{
Board[i][2] = '*';
return;
}
else if (Board[i][0] == Board[i][2] && Board[i][0] == '#' && Board[i][1] == ' ')
{
Board[i][1] = '*';
return;
}
else if (Board[i][1] == Board[i][2] && Board[i][1] == '#' && Board[i][0] == ' ')
{
Board[i][0] = '*';
return;
}
}
for (int j = 0; j < col; j++)
{
if (Board[0][j] == Board[1][j] && Board[0][j] == '#' && Board[2][j] == ' ')
{
Board[2][j] = '*';
return;
}
else if (Board[0][j] == Board[2][j] && Board[0][j] == '#' && Board[1][j] == ' ')
{
Board[1][j] = '*';
return;
}
else if (Board[1][j] == Board[2][j] && Board[1][j] == '#' && Board[0][j] == ' ')
{
Board[0][j] = '*';
return;
}
}
if (Board[0][0] == Board[1][1] && Board[0][0] == '#' && Board[2][2] == ' ')
{
Board[2][2] = '*';
return;
}
else if (Board[0][0] == Board[2][2] && Board[0][0] == '#' && Board[1][1] == ' ')
{
Board[1][1] = '*';
return;
}
else if (Board[1][1] == Board[2][2] && Board[1][1] == '#' && Board[0][0] == ' ')
{
Board[0][0] = '*';
return;
}
else if (Board[0][2] == Board[1][1] && Board[0][2] == '#' && Board[2][0] == ' ')
{
Board[2][0] = '*';
return;
}
else if (Board[0][2] == Board[2][0] && Board[0][2] == '#' && Board[1][1] == ' ')
{
Board[1][1] = '*';
return;
}
else if (Board[2][0] == Board[1][1] && Board[2][0] == '#' && Board[0][2] == ' ')
{
Board[0][2] = '*';
return;
}
}
else
{
if (Board[1][1] == ' ')
{
Board[1][1] = '*';
return;
}
else
{
x = rand() % row;
y = rand() % col;
if (Board[x][y] == ' ')
{
Board[x][y] = '*';
break;
}
}
}
}
}
``````

## 判断电脑是否有位置可以获胜

``````static int JudgeComputer(char Board[ROW][COL], int row, int col)
{
for (int i = 0; i < row; i++)
{
if (Board[i][0] == Board[i][1] && Board[i][0] == '*' && Board[i][2] == ' ')
return 1;
else if (Board[i][0] == Board[i][2] && Board[i][0] == '*' && Board[i][1] == ' ')
return 1;
else if (Board[i][1] == Board[i][2] && Board[i][1] == '*' && Board[i][0] == ' ')
return 1;
}
for (int j = 0; j < col; j++)
{
if (Board[0][j] == Board[1][j] && Board[0][j] == '*' && Board[2][j] == ' ')
return 1;
else if (Board[0][j] == Board[2][j] && Board[0][j] == '*' && Board[1][j] == ' ')
return 1;
else if (Board[1][j] == Board[2][j] && Board[1][j] == '*' && Board[0][j] == ' ')
return 1;
}
if (Board[0][0] == Board[1][1] && Board[0][0] == '*' && Board[2][2] == ' ')
return 1;
else if (Board[0][0] == Board[2][2] && Board[0][0] == '*' && Board[1][1] == ' ')
return 1;
else if (Board[1][1] == Board[2][2] && Board[1][1] == '*' && Board[0][0] == ' ')
return 1;
else if (Board[0][2] == Board[1][1] && Board[0][2] == '*' && Board[2][0] == ' ')
return 1;
else if (Board[0][2] == Board[2][0] && Board[0][2] == '*' && Board[1][1] == ' ')
return 1;
else if (Board[2][0] == Board[1][1] && Board[2][0] == '*' && Board[0][2] == ' ')
return 1;
else
return 0;
}
``````

## 判断玩家是否有位置获胜

``````static int JudgePlayer(char Board[ROW][COL], int row, int col)
{
for (int i = 0; i < row; i++)
{
if (Board[i][0] == Board[i][1] && Board[i][0] == '#' && Board[i][2] == ' ')
return 1;
else if (Board[i][0] == Board[i][2] && Board[i][0] == '#' && Board[i][1] == ' ')
return 1;
else if (Board[i][1] == Board[i][2] && Board[i][1] == '#' && Board[i][0] == ' ')
return 1;
}
for (int j = 0; j < col; j++)
{
if (Board[0][j] == Board[1][j] && Board[0][j] == '#' && Board[2][j] == ' ')
return 1;
else if (Board[0][j] == Board[2][j] && Board[0][j] == '#' && Board[1][j] == ' ')
return 1;
else if (Board[1][j] == Board[2][j] && Board[1][j] == '#' && Board[0][j] == ' ')
return 1;
}
if (Board[0][0] == Board[1][1] && Board[0][0] == '#' && Board[2][2] == ' ')
return 1;
else if (Board[0][0] == Board[2][2] && Board[0][0] == '#' && Board[1][1] == ' ')
return 1;
else if (Board[1][1] == Board[2][2] && Board[1][1] == '#' && Board[0][0] == ' ')
return 1;
else if (Board[0][2] == Board[1][1] && Board[0][2] == '#' && Board[2][0] == ' ')
return 1;
else if (Board[0][2] == Board[2][0] && Board[0][2] == '#' && Board[1][1] == ' ')
return 1;
else if (Board[2][0] == Board[1][1] && Board[2][0] == '#' && Board[0][2] == ' ')
return 1;
else
return 0;
}
``````

## 判断输赢

``````char IsWin(char Board[ROW][COL], int row, int col)
for (int i = 0; i < row; i++)
{
if (Board[i][0] == Board[i][1] && Board[i][2] == Board[i][1] && Board[i][1] != ' ')
{
return Board[i][0];
}
}
for (int j = 0; j < col; j++)
{
if (Board[0][j] == Board[1][j] && Board[1][j] == Board[2][j] && Board[j][1] !=  ' ')
{
return Board[0][j];
}
}
if (Board[0][0] == Board[1][1] && Board[2][2] == Board[1][1] && Board[2][2] != ' ')
return Board[0][0];
if (Board[0][2] == Board[1][1] && Board[2][0] == Board[1][1] && Board[1][1] != ' ')
return Board[1][1];

if (IsFull(Board, ROW, COL))
{
return 'o';
}
return 'C';
}
``````

## 判断和棋

``````static int IsFull(char Board[ROW][COL], int row, int col)
{
for (int i = 0; i < row; i++)
{
for (int j = 0; j < col; j++)
{
if (Board[i][j] == ' ')
return 0;
}
}
return 1;
}

``````

# 声明代码

``````void meun();
#define ROW 3
#define COL 3
//游戏主函数
void game();
//初始化二维数组
void InitBoard(char Board[ROW][COL], int row, int col);
//打印棋盘
void DisplayBoard(char Board[ROW][COL], int row, int col);
//玩家下棋
void PlayMove(char Board[ROW][COL], int row, int col);
//电脑下棋
void ComputerMove(char Board[ROW][COL], int row, int col);
//判断赢否
char IsWin(char Board[ROW][COL], int row, int col);
//判断棋盘满了吗
//int IsFull(char Board[ROW][COL], int row, int col);
//判断电脑下一部是否可以直接赢
//int JudgeComputer(char Board[ROW][COL], int row, int col);
//判断玩家下一步是否会赢
//int JudgePlayer(char Board[ROW][COL], int row, int col);
``````

# 测试代码

``````#include "game.h"

void game()
{
char ret = 0;
char Board[ROW][COL] = { 0 };
//初始化数组
InitBoard(Board, ROW, COL);
//打印棋盘
printf("棋盘如下：n");
DisplayBoard(Board, ROW, COL);
while (1)
{
//玩家下棋
printf("玩家落子：n");
PlayMove(Board, ROW, COL);
//每下一步打印一次棋盘
DisplayBoard(Board, ROW, COL);
//每下一步判断一次胜负
ret = IsWin(Board, ROW, COL);
if (ret != 'C')
{
break;
}
//电脑下棋
printf("电脑落子：n");
ComputerMove(Board, ROW, COL);
//每下一步打印一次棋盘
DisplayBoard(Board, ROW, COL);
ret = IsWin(Board, ROW, COL);
if (ret != 'C')
{
break;
}
}
if (ret == '#')
printf("玩家获胜n");
else if (ret == '*')
printf("电脑获胜n");
else if (ret == 'o')
printf("卧龙凤雏n");
}

void test()
{
int input = 0;
srand((size_t)time(NULL));
do
{
meun();
printf("请选择:>");
scanf("%d", &input);
switch (input)
{
case 1:
game();
break;
case 0:
printf("游戏结束n");
break;
default:
printf("输入错误，请重新输入：n");
break;
}
} while (input);
}
int main()
{
test();
return 0;
}
``````

THE END