接下来我们就要开始下棋了

tip:玩家为* 电脑为#

玩家先手

这里我们要考虑几个问题：

1. 输入的坐标并不是数组的下标

2. 输入坐标超过数组的界限怎么办

void player_move(char board[ROW][COL], int row, int col) {while (1){printf("请输入要下棋的坐标:>");int x = 0;int y = 0;scanf("%d %d", &x, &y);if (x >= 1 && x <= row && y >= 1 && y <= col)//在这里我们判断是否在数组内{if (board[x - 1][y - 1] == ' '){board[x - 1][y - 1] = '*';//判断该位置为空则可以下，否则位置错误重新输入break;}else{printf("坐标错误\n");}}else//如果不在数组内则位置错误，重新输入{printf("坐标错误\n");}}
}

判断棋盘是否满了

在对局中我们每次下棋都要判断棋盘是否满了

如果已经满了还未分出胜负，则为平局

void is_full(char board[ROW][COL], int row, int col) {int flag = 0;for (int i = 0; i < row; i++) {for (int j = 0; j < col; j++) {if (board[i][j] == ' ') {flag++;}}}if (flag == 0) {printf("平局\n");exit(0);}
}

电脑对局

在这里我们用随机数的方式实现电脑下棋

void computer_move(char board[ROW][COL], int row, int col) {printf("AI下棋：\n");while (1) {is_full(board, ROW, COL);int x = rand() % row;int y = rand() % col;//使用rand()函数//之前我们使用srand((unsigned int)time(NULL))//就是以时间来求随机数以求更随机if (board[x][y] == ' ') {board[x][y] = '#';break;}}
}

判断胜负

三子棋的规则是什么？

三个相同的棋在同行同列或者对角线上即为胜利

char is_win(char board[ROW][COL], int row, int col) {for (int 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 (int 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[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] != ' '){return board[1][1];}is_full(board, ROW, COL);
}

这里我们返回符合条件的*或者#，在game()函数中判断返回值，即可判断胜利

game()函数

使用一个循环，如果有一方胜利或者平局则打破循环结束游戏

void game() {char board[ROW][COL];char res = 0;Init(board, ROW, COL);print(board, ROW, COL);while (1) {player_move(board, ROW, COL);print(board, ROW, COL);is_win(board, ROW, COL);Sleep(1000);computer_move(board, ROW, COL);print(board, ROW, COL);is_win(board, ROW, COL);res= is_win(board, ROW, COL);if (res == '*') {printf("玩家胜！\n");break;}else if(res=='#') {printf("AI胜!\n");break;}}
}

总结

在写代码的过程中，遇到问题解决问题是提升最快的方式。

当你碰到不会的，不懂的，不要害怕，这正是你所能够进步的地方！

我是分模块写的，源码如下：

fun.c

#define _CRT_SECURE_NO_WARNINGS 1
#include "sanziqi.h"
void memu() {printf("********************************\n");printf("************* 1->开始 **********\n");printf("************* 0->退出 **********\n");printf("********************************\n");printf("->");
}void game() {char board[ROW][COL];char res = 0;Init(board, ROW, COL);print(board, ROW, COL);while (1) {player_move(board, ROW, COL);print(board, ROW, COL);is_win(board, ROW, COL);Sleep(1000);computer_move(board, ROW, COL);print(board, ROW, COL);is_win(board, ROW, COL);res= is_win(board, ROW, COL);if (res == '*') {printf("玩家胜！\n");break;}else if(res=='#') {printf("AI胜!\n");break;}}
}
void Init(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] = ' ';}}
}
void print(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");int x = 0;int y = 0;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("坐标错误\n");}}else{printf("坐标错误\n");}}}
void computer_move(char board[ROW][COL], int row, int col) {printf("AI下棋：\n");while (1) {is_full(board, ROW, COL);int x = rand() % row;int y = rand() % col;if (board[x][y] == ' ') {board[x][y] = '#';break;}}
}
char is_win(char board[ROW][COL], int row, int col) {for (int 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 (int 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[0][2] == board[1][1] && board[1][1] == board[2][0] && board[1][1] != ' '){return board[1][1];}is_full(board, ROW, COL);
}
void is_full(char board[ROW][COL], int row, int col) {int flag = 0;for (int i = 0; i < row; i++) {for (int j = 0; j < col; j++) {if (board[i][j] == ' ') {flag++;}}}if (flag == 0) {printf("平局\n");exit(0);}
}

main.c

#define _CRT_SECURE_NO_WARNINGS 1
#include "sanziqi.h"
int main() {memu();srand((unsigned int)time(NULL));int input;scanf("%d", &input);switch(input) {case 0:exit(0);break;case 1:game();break;default:printf("输入错误！");break;}}

sanziqi.h

#pragma once
#include
#include
#include
#include
#define ROW 3
#define COL 3
void memu();//菜单
void game();//进入游戏
void Init(char board[ROW][COL], int row, int col);//初始化
void print(char board[ROW][COL],int row,int col);//打印界面
void player_move(char board[ROW][COL], int row, int col);//玩家下棋
void computer_move(char board[ROW][COL], int row, int col);//AI下棋
char is_win(char board[ROW][COL], int row, int col);//判断胜利
void is_full(char board[ROW][COL], int row, int col);//判断是否填满，平局