C语言实现简易n子棋小游戏（代码含注解）

利用C语言简单实现一个n子棋小游戏，棋盘大小由自己定义

将源文件分为执行游戏的测试文件(test.c)和保存游戏运行逻辑的相关函数的文件(game.c)

头文件中声明符号和函数的定义(game.h)

游戏执行主要依靠二维数组实现，电脑走棋采用随机值的方法简易地实现而非采用高级的算法

头文件 game.h

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <string.h>
#include <math.h>
#include<stdlib.h>
#include<windows.h>
#include<time.h>
//符号的定义(定义几子棋)
#define ROW 3
#define COL 3//函数的定义
void InitBoard(char board[ROW][COL], int row, int col);//初始化棋盘
void PrintBoard(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);//判断游戏结果

源文件 test.c

#include "game.h"            //引用头文件
void game() {char ret;char board[ROW][COL];  //二维数组存储游戏数据，ROW、COL为行和列，在头文件game.h中定义InitBoard(board,ROW,COL);//初始化棋盘为空格PrintBoard(board, ROW, COL);//打印棋盘while (1) {printf("玩家走\n\n");PlayerMove(board, ROW, COL);  //玩家下棋Sleep(500);PrintBoard(board, ROW, COL);  //判断玩家是否赢得游戏ret=IsWin(board, ROW, COL);		//返回值为*代表玩家获胜、#代表电脑获胜、D代表平局、C代表未出结果，游戏继续if (ret != 'C') {break;}printf("电脑走\n\n");ComputerMove(board, ROW, COL);//玩家下棋Sleep(1300);PrintBoard(board, ROW, COL);//判断电脑是否赢得游戏ret = IsWin(board, ROW, COL);if (ret != 'C') {break;}}if (ret == '*') {printf("玩家获胜\n\n");}else if (ret =='#') {printf("电脑获胜\n\n");}else if (ret == 'D') {printf("平局\n\n");}PrintBoard(board, ROW, COL);//打印游戏结果}
void menu() {printf("***************************\n");printf("*****      1.play     *****\n");printf("*****      0.exit     *****\n");printf("***************************\n");}
int main() {int n;srand((unsigned int)time(NULL));//设置随机数种子do{menu();printf("请选择：\n");scanf("%d", &n);switch (n){case 1:game();break;case 0:printf("退出游戏\n");break;default:printf("选择错误，重新选择\n");break;}} while (n);return 0;
}

源文件 game.c

#include "game.h"                        //引用头文件
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] = ' ';}}
}
void PrintBoard(char board[ROW][COL], int row, int col) {          //打印棋盘for (int j = 0; j < col; j++) {printf(" ___");}printf(" \n");for (int i = 0; i < row; i++) {for (int j = 0; j < col; j++) {printf("| %c ",board[i][j]);}printf("|\n");if (i < row ) {for (int j = 0; j < col; j++) {printf("|___");}printf("|\n");}}printf("\n");
}
void PlayerMove(char board[ROW][COL], int row, int col) {while (1) {                            //若输入错误则一直循环int x, y;printf("请输入坐标：\n");scanf("%d %d", &x, &y);if (x <= row && x >= 1 && y <= col && y >= 1) {         //判断坐标是否合法if (board[x - 1][y - 1] == ' ')                     //玩家输入的坐标需要减1，因为数组从0开始，同时判断坐标是否被占用过{board[x - 1][y - 1] = '*';break;}else{printf("坐标被占用，请重新输入：\n");}}else{printf("坐标不合法，请重新输入：\n");}}
}
void ComputerMove(char board[ROW][COL], int row, int col) {while (1) {int x = rand() % row;  //生成合法的行坐标int y = rand() % col;  //生成合法的列坐标if (board[x][y]==' ') {board[x][y] = '#';break;}}
}char IsWin(char board[ROW][COL], int row, int col) {int x = 0;                   //计数器判断一行或一列是否遍历结束int sum1 = 0;                //判断*的数量int sum2 = 0;                //判断#的数量for (int i = 0; i < col; i++) {for (int j = 0; j < row; j++) {               //判断每行上是否有连续三个相等的符号if (board[i][j] == '*') {sum1 += 1;}if (board[i][j] == '#') {sum2 +=1;}x++;if(x==row){                                 //一行统计完时if (sum1 == row) {                        //一行全是*return '*';}else if (sum2 == row) {return '#';                         //一行全是#}else {                                  //一行中未分胜负则计数器清零统计下一行sum1 = 0;                         sum2 = 0;x = 0;}}}}for (int j = 0; j < row; j++) {for (int i = 0; i < col; i++) {                //行未分出胜负，则开始统计列if (board[i][j] == '*') {sum1 += 1;}if (board[i][j] == '#') {sum2 += 1;}x++;if (x == row) {                             //一列统计完时if (sum1 == row) {                        //一列全是*return '*';}else if (sum2 == row) {return '#';                         //一列连全是#}else {                                  //一列中未分胜负则计数器清零统计下一列sum1 = 0;sum2 = 0;x = 0;}}}}for (int i = 0; i < col; i++) {for (int j = 0; j < row; j++) {                 //行列都为分出胜负统计主对角线元素if (i == j) {if (board[i][j] == '*') {sum1 += 1;}else if (board[i][j] == '#') {sum2 += 1;}}}}if (sum1 == row) {return '*';                                     //主对角线上元素都为*}else if (sum2 == row) {return '#';                                     //主对角线上元素都为#}else {sum1 = 0;sum2 = 0;                                       //计数器清零统计副对角线}//查看副对角线上的元素，可以先复制一个横向翻转的临时棋盘board1，查看主对角线上的元素char board1[ROW][COL];for (int i = 0; i < row; i++) {for (int j = 0; j < col; j++) {board1[i][j] = board[i][col-j-1];}}//判断临时棋盘的主对角线元素for (int i = 0; i < col; i++) {for (int j = 0; j < row; j++) {                 if (i == j) {if (board1[i][j] == '*') {sum1 += 1;}else if (board1[i][j] == '#') {sum2 += 1;}}}}if (sum1 == row) {return '*';                                     //主对角线上元素都为*}else if (sum2 == row) {return '#';                                     //主对角线上元素都为#}else {sum1 = 0;sum2 = 0;                                       //计数器清零}//查看是否为平局，则是以上都判断完后，棋盘是否满了，满了则返回‘D’，不满则继续for (int i = 0; i < row; i++) {for (int j = 0; j < col; j++) {if (board[i][j] == ' ') {return 'C';                     //有地方是空的，游戏还未出结果}}}return 'D';                                 //棋盘满了且没分出胜负，则为平局
}

运行结果（以3子为例）：