井字棋是黑白棋的一种。井字棋是一种民间传统游戏，又叫九宫棋、圈圈叉叉、一条龙、三子旗等。将正方形对角线连起来，相对两边依次摆上三个双方棋子，只要将自己的三个棋子走成一条线，对方就算输了。但是，有很多时候会出现和棋的情况。我们学习了c语言，现在我们尝试自己用C语言写一个井字棋小游戏玩玩吧！

井字棋游戏规则：

小伙伴们可以自己去尝试一下

难度级别可以自己调：

棋盘格子的多少可以由自己来定

#define ROW 3 #define COL 3 //这里的行和列有自己来设定

源码如下：

（1）kt.c (文件名)

#include "game.h"void menu(){printf("***********************\n");printf("****1.play  0.exit*****\n");printf("***********************\n");}void game(){char ret = 0;char board[ROW][COL] = { 0 };InitBoard(board, ROW, COL);DisplayBoard(board, ROW, COL);while (1){PlayerMove(board, ROW, COL);DisplayBoard(board, ROW, COL);ret = IsWin(board, ROW, COL);if (ret != 'C'){break;}ComputerMove(board, ROW, COL);DisplayBoard(board, ROW, COL);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();return 0;}

（2）game.c (文件名)

#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);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;}}}int IsFull(char board[ROW][COL],int row,int col){ //返回1表示棋盘满了，返回0表示棋盘没有满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 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[1][i] != ' '){return board[1][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';}

（3）game.h(文件名)

#define ROW 3 //这里可以自己选择大小，来增加难度#define COL 3#include<stdio.h>#include<stdlib.h>#include<time.h>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], int row, int col);void ComputerMove(char board[ROW][COL], int row, int col);char IsWin(char board[ROW][COL], int row, int col);

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