C语言实现三子棋小游戏详解

在用C语言实现三子棋小游戏之前，我们应当了解三子棋的游戏规则：在九宫格棋盘上，哪一方三个棋子连成一线（一行或一列或对角线）即判定哪一方胜利。

以下为源代码：

1.首先打印出菜单。

void menu()
{
 printf("**********************************\n");
 printf("**********************************\n");
 printf("***** 0.play *************\n");
 printf("***** 1.exit *************\n");
 printf("**********************************\n");
} 
menu();
 do
 {
 printf("请输入要选的的选项: ");
 scanf("%d",&input);
 switch (input)
 {
 case 0:
 game();
 break; 
 case 1:
 printf("退出游戏");
 break;
 default:
 printf("请输入要选的选项:\n");
 break;
 }
 } while (input);

2.创建一个二维数组board用来储存三子棋的元素，并对其进行初始化。

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] = ' ';
 }
 }
}

3.打印九宫格棋盘。

void Displayboard(char board[ROW][COL], int row, int col) //打印棋盘
{
 int i;
 int j;
 for (i = 0; i < row; i++)
 {
 for (j = 0; j < col ; j++)
 {
 printf(" %c ", board[i][j]);
 if (j == col - 1)
 continue;
 printf("|");
 }
 printf("\n");
 if (i < row - 1)
 printf("-----------\n");
 }
}

4.使用Playermove和Computermove函数来对board数组进行更改，模拟玩家和电脑落子情况。

void Playermove(char board[ROW][COL]) //玩家输入坐标
{
 while (1)
 {
 int x = 0;
 int y = 0;
 printf("请玩家输入坐标");
 scanf_s("%d %d", &x, &y);
 if (x <= ROW && x >= 1 && y <= COL && y >= 1) //判断输入的坐标是否越界

 {
 if (board[x - 1][y - 1] == ' ') //输入的坐标必须为空才可以落子
 {
 board[x - 1][y - 1] = '*';
 break;
 }
 else
 printf("坐标被占用，请重新输入\n");
 }
 else
 printf("坐标有误，请重新输入\n");
 }
 }
 void Computermove(char board[ROW][COL]) //电脑输入坐标
{
 int x = 0;
 int y = 0;
 while (1)
 {
 x = rand() % 3; //使用rand函数生成随机数并取余得到电脑落子坐标
 y = rand() % 3;
 if (board[x][y] == ' ')
 {
 printf("电脑输入坐标%d %d\n", x+1, y+1);
 board[x][y] = '#';
 break;  //打印后跳出循环
 }
 }
}

5.玩家和电脑每落一次子，就要进行一次判断是否获胜，根据返回值来进行判断游戏结果。

int Iswin(char board[ROW][COL], int row, int col) //判断谁获胜
{
 int i;
 int j;
 //1为玩家获胜 0为电脑获胜 2为平局
 for (i = 0; i < row; i++)
 {
 if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][1] == '*') //判断同一行是否相等
 return 1; 
 else if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][1] == '#')
 return 0;
 }
 for (j = 0; j < col; j++)
 {
 if (board[0][j] == board[1][j] && board[1][j] == board[2][j] && board[1][j] == '*') //判断同一列是否相等
 return 1;
 else if (board[0][j] == board[1][j] && board[1][j] == board[2][j] && board[1][j] == '#')
 return 0;
 }
 if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] == '*') //判断左对角线是否相等
 return 1;
 else if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] == '#')
 return 0;
 if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] == '*') //判断右对角线是否相等
 return 1;
 else if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] == '#')
 return 0;
 if (Full(board, ROW, COL)) //判断是否平局
 return 2;
 return 3;  //返回3为继续进行游戏
}

6.函数声明，宏定义，函数的定义实现，测试。

#include
#include
#include
#include
#include"game.h"
# define _CRT_SECURE_NO_WARNINGS
#define ROW 3
#define COL 3

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]);
void Computer(char board[ROW][COL]);
int Iswin(char board[ROW][COL], int row, int col);
int Full(char board[ROW][COL], int row, int col);
void menu()
{
 printf("**********************************\n");
 printf("**********************************\n");
 printf("***** 0.play *************\n");
 printf("***** 1.exit *************\n");
 printf("**********************************\n");
}
void game()
{
 char board[ROW][COL] = { 0 };
 int ret;
 Initboard(board, ROW, COL); //用Initboard函数初始化数组，并用‘ '初始化数组
 printf("游戏开始\n");
 while (1)
 {
 Playermove(board); //玩家输入坐标
 Displayboard(board, ROW, COL);
 ret = Iswin(board, ROW, COL); //判断是否获胜
 if (ret == 1)
 {
 printf("玩家获胜");
 break;
 }
 else if (ret == 0)
 {
 printf("电脑获胜");
 break;
 }
 else if (ret == 2)
 {
 printf("平局");
 break;
 }
 printf("\n\n");
 Computer(board); //电脑输入坐标
 Displayboard(board, ROW, COL);
 ret = Iswin(board, ROW, COL); //判断是否获胜
 if (ret == 1)
 {
 printf("玩家获胜");
 break;
 }
 else if (ret == 0)
 {
 printf("电脑获胜");
 break;
 }
 else if (ret == 2)
 {
 printf("平局");
 break;
 }
 printf("\n\n");
 }
}
int main()
{
 int input = 0;
 srand((unsigned int)time(NULL));
 menu();
 do
 {
 printf("请输入要选的的选项: ");
 scanf("%d",&input);
 switch (input)
 {
 case 0:
 game();
 break; 
 case 1:
 printf("退出游戏");
 break;
 default:
 printf("请输入要选的选项:\n");
 break;
 }
 } while (input);
}
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) //打印棋盘
{
 int i;
 int j;
 for (i = 0; i < row; i++)
 {
 for (j = 0; j < col ; j++)
 {
 printf(" %c ", board[i][j]);
 if (j == col - 1)
 continue;
 printf("|");
 }
 printf("\n");
 if (i < row - 1)
 printf("-----------\n");
 }
}

void Playermove(char board[ROW][COL]) //玩家输入坐标
{
 while (1)
 {
 int x = 0;
 int y = 0;
 printf("请玩家输入坐标");
 scanf_s("%d %d", &x, &y);
 if (x <= ROW && x >= 1 && y <= COL && y >= 1)
 {
 if (board[x - 1][y - 1] == ' ')
 {
 board[x - 1][y - 1] = '*';
 break;
 }
 else
 printf("坐标被占用，请重新输入\n");
 }
 else
 printf("坐标有误，请重新输入\n");
 }
}

void Computer(char board[ROW][COL]) //电脑输入坐标
{
 int x = 0;
 int y = 0;
 while (1)
 {
 x = rand() % 3;
 y = rand() % 3;
 if (board[x][y] == ' ')
 {
 printf("电脑输入坐标%d %d\n", x+1, y+1);
 board[x][y] = '#';
 break;  //打印后跳出循环
 }
 }
}

int Iswin(char board[ROW][COL], int row, int col) //判断谁获胜
{
 int i;
 int j;
 //1为玩家获胜 0为电脑获胜 2为平局
 for (i = 0; i < row; i++)
 {
 if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][1] == '*') //判断同一行是否相等
 return 1; 
 else if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][1] == '#')
 return 0;
 }
 for (j = 0; j < col; j++)
 {
 if (board[0][j] == board[1][j] && board[1][j] == board[2][j] && board[1][j] == '*') //判断同一列是否相等
 return 1;
 else if (board[0][j] == board[1][j] && board[1][j] == board[2][j] && board[1][j] == '#')
 return 0;
 }
 if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] == '*') //判断左对角线是否相等
 return 1;
 else if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[1][1] == '#')
 return 0;
 if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] == '*') //判断右对角线是否相等
 return 1;
 else if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] == '#')
 return 0;
 if (Full(board, ROW, COL)) //判断是否平局
 return 2;
 return 3;  //返回3为继续进行游戏
}

int Full(char board[ROW][COL], int row, int col) //判断棋盘是否下满
{
 int i;
 int j;
 for (i = 0; i < row; i++)
 {
 for (j = 0; j < col; j++)
 {
 if (board[i][j] == ' ')
 return 0; //此时棋盘未满
 }
 }
 return 1; //此时棋盘已满
}

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