C语言小游戏之井字棋

1、游戏菜单

2、实现游戏函数

2.1、初始化棋盘

2.2、打印棋盘

2.3、实现玩家下棋

2.3、实现电脑下棋

2.4、判断输赢

2.5、判断棋盘是否满

2.6、游戏函数

3、完整代码

3.1、game.h

3.2、game.c

3.3、main.c

在C学习的过程中，我们写了比如hellow world、斐波那契数列、九九乘法表等等很多的程序，今天为大家带来三子棋，也就是井字棋用C实现的教程

1、游戏菜单

首先我们来写出这个游戏的菜单如下：

void menu()
{printf("*************************************\n");printf("***** 1.paly ************ 0.exit ****\n");printf("*************************************\n");
}

让玩家知道选择1玩游戏，选择0是退出游戏。

在主函数中如下：

void test()
{int input = 0;//定义一个让玩家输入选择的变量do{menu();printf("请选择:>");scanf("%d", &input);switch (input){case 1 ://输入1时开始游戏game();break;case 0 ://输入0时退出游戏printf("退出游戏\n");break;default ://输入其他数时则选择错误printf("选择错误，请重新选择！\n");break;}} while (input);//若为0则判断条件为假退出循环}int main()
{test();
}

2、实现游戏函数

#include<stdio.h>
#include<stdlib.h>
#include<time.h>#define ROW 3
#define COL 3void InitBoard(char board[ROW][COL], int row, int col);//初始化棋盘
void DisplayBoard(char board[ROW][COL], int row, int col);//打印棋盘
void PlayerMove(char board[ROW][COL], int row, int col);//玩家下棋
void ComputerMove(char board[ROW][COL], int row, int col);//电脑下棋
char IsWin(char board[ROW][COL], int row, int col);//判断双方输赢
int IsFull(char board[ROW][COL], int row, int col);//判断棋盘是否满

为了方便以后修改将行列数定义成宏变量

2.1、初始化棋盘

在没有开始下棋时所有的格子都需要是空的

代码如下：

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] = ' ';}}
}

2.2、打印棋盘

每次玩家下棋时需要让玩家知道哪里有空位

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){printf("|");}}printf("\n");if (i < row - 1){for (j = 0; j < col; j++){printf("---");if (j < col - 1){printf("|");}}printf("\n");}}
}

首次打印出3X3的棋盘

2.3、实现玩家下棋

void PlayerMove(char board[ROW][COL], int row, int col)
{int x = 0;int y = 0;printf("玩家走:>\n");while (1){printf("请输入要下的坐标:>");scanf("%d%d", &x, &y);//判断坐标合法性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");}}}

每次下棋时输入要下位置的坐标，如果此处的为空则落子，否则让玩家重新输入坐标，直到输入正确位置

2.3、实现电脑下棋

玩家落完子后，电脑从剩下的空位置中随机选择一个落子（也可以实现一个比较智能的）

代码如下：

void ComputerMove(char board[ROW][COL], int row, int col)
{int x = 0;int y = 0;printf("电脑走:>\n");while (1){x = rand() % row;y = rand() % col;if (board[x][y] == ' '){board[x][y] = '#';break;}}}

为正确生成随机坐标

在tect函数中

加入

srand((unsigned int)time(NULL));

随机数种子

2.4、判断输赢

赢棋有几种方式：

1、三横

2、三竖

3、两个对角线

当其中有一个成立时，则返回成立时的三个元素之一，若为电脑子则为电脑赢，若为玩家子则为玩家赢。

若在棋盘满时没有3点中任何一个成立，则为平局

代码如下：

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

2.5、判断棋盘是否满

在判断输赢的函数中调用，遍历棋盘若其中没有空则为满，满则返回1，若不满则返回0

代码如下：

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;
}

2.6、游戏函数

开始时创建一个数组作为棋盘，然后初始化棋盘，玩家先下，后判断输赢再由电脑落子，再判断输赢，放入循环中直到棋盘满，或分出输赢

代码如下：

void game()
{//数组-存放走出的棋盘信息char board[ROW][COL] = { 0 };char ret = 0;//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);//打印棋盘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);//打印棋盘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！\n");}
}

3、完整代码

3.1、game.h

#include<stdio.h>
#include<stdlib.h>
#include<time.h>#define ROW 3
#define COL 3void 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);
char IsWin(char board[ROW][COL], int row, int col);
int IsFull(char board[ROW][COL], int row, int col);

3.2、game.c

#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++){int j = 0;for (j = 0; j < col; j++){printf(" %c ", board[i][j]);if (j < col - 1){printf("|");}}printf("\n");if (i < row - 1){for (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;int y = 0;printf("玩家走:>\n");while (1){printf("请输入要下的坐标:>");scanf("%d%d", &x, &y);//判断坐标合法性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;int y = 0;printf("电脑走:>\n");while (1){x = rand() % row;y = rand() % col;if (board[x][y] == ' '){board[x][y] = '#';break;}}}char IsWin(char board[ROW][COL], int row, int col)
{int i = 0;for (i = 0; i < row; i++){if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][0] != ' '){return board[i][0];}}for (i = 0; i < col; i++){if (board[0][i] == board[1][i] && board[1][i] == board[2][i] && board[0][i] != ' '){return board[0][i];}}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];}if (1 == IsFull(board, ROW, COL)){return 'Q';}return 'C';
}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;
}

3.3、main.c

#include"game.h"void menu()
{printf("*************************************\n");printf("***** 1.paly ************ 0.exit ****\n");printf("*************************************\n");
}void game()
{//数组-存放走出的棋盘信息char board[ROW][COL] = { 0 };char ret = 0;//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);//打印棋盘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);//打印棋盘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！\n");}
}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();
}

实现完成，下次为大家带来扫雷！