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首先来梳理一下实现三子棋的代码分区：
为了使代码干净整洁，结构完整，可读性及可移植性增强，我们将整个代码分为三个板块，分别是game.h(用于存放代码需要的头文件及各个实现游戏功能的函数声明)，game.c(这里存放的是游戏实现过程中函数的定义)，test.c(这里主要是与用户的交互实现)
其次，就是实现游戏的具体逻辑：
①棋类游戏，首先需要一个棋盘，可以使用一些电脑键盘自带的分隔符以及空格来实现，实现代码如下：
//初始化棋盘 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] = ' '
; } } } //打印棋盘 void DisplayBoard(char board[ROW][COL], int row, int col) { int i
= 0; int j = 0; for (i = 0; i < row; i++) { //数据 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"); } }
②得到棋盘以后，就开始下棋功能的实现。这里玩家通过输入二维数组的坐标来实现玩家下棋，而电脑下棋通过使用随机函数来实现，下面是具体代码
//玩家下棋 void player_move(char board[ROW][COL], int row, int col) { printf(
"玩家下棋->\n"); int x = 0; int y = 0; while (1) { 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("输入坐标错误，重新输入！\n"); } } else { printf(
"坐标非法，重新输入！\n"); } } } //电脑下棋 void computer_move(char board[ROW][COL], int row,
int col) { int x = 0; int y = 0; printf("电脑下棋->\n"); while (1) { x = rand() %
ROW; y = rand() % COL; if (board[x][y] == ' ') { board[x][y] = '#'; break; } } }
③最后就是游戏赢家的判断，通过判断二维数组的行，列，对角线是否相等来判断输赢
//判断赢家 char is_win(char board[ROW][COL], int row, int col) { int i = 0; int j =
0; int P = 0; int C = 0; int win = 0; while (i <= row)//判断行 { while (j < (col -
1)) { if (board[i][j] == board[i][j + 1] && board[i][j] == '*') P++; if (board[i
][j] == board[i][j + 1] && board[i][j] == '#') C++; if (P == (row - 1)) return
'*'; else if (C == (row - 1)) return '#'; j++; } i++; } while (j <= row)//判断列 {
P= 0; C = 0; i = 0; while (i < (col - 1)) { if (board[i][j] == board[i + 1][j]
&& board[i][j] == '*') P++; if (board[i][j] == board[i + 1][j] && board[i][j] ==
'#') C++; if (P == (row - 1)) return '*'; else if (C == (row - 1)) return '#'; i
++; } j++; } P = 0; C = 0; for (i = 0; i < row; i++)//主对角线 { if (board[i][i] ==
board[i + 1][i + 1] && board[i][i] == '*') P++; if (board[i][i] == board[i + 1][
i+ 1] && board[i][i] == '#') C++; if (P == (row - 1)) return '*'; else if (C ==
(row - 1)) return '#'; } P = 0; C = 0; for (i = 0, j = (col - 1); i < row, j > 0
; i++, j--)//副对角线 { if (board[i][j] == board[i + 1][j - 1] && board[i][j] == '*'
) P++; if (board[i][j] == board[i + 1][j - 1] && board[i][j] == '#') C++; if (P
== (row - 1)) return '*'; else if (C == (row - 1)) return '#'; } //判断平局 if (1 ==
is_full(board, row, col)) { return 'Q'; } //继续 return 'C'; }
上面这些就是实现这样一个三子棋游戏最主要的代码逻辑，最后附上完整代码。注意是在源文件中还是头文件中哦！
game1.h
#include <stdio.h> #include <time.h> #include <stdlib.h> #define ROW 3 #define
COL 3 //初始化棋盘为空 void InitBoard(char board[ROW][COL], int row, int col); //打印棋盘
void DisplayBoard(char board[ROW][COL], int row, int col); //玩家下棋 void
player_move(int board[ROW][COL], int row, int col); //电脑下棋 void computer_move(
int board[ROW][COL], int row, int col); int is_full(char board[ROW][COL], int
row, int col); char is_win(char board[ROW][COL], int row, int col);
game.c
#include "game.h" //初始化棋盘 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] = ' '; } } } //打印棋盘 void DisplayBoard(char board[ROW][COL], int
row, int col) { int i = 0; int j = 0; for (i = 0; i < row; i++) { //数据 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"); } } //玩家下棋 void player_move(char
board[ROW][COL], int row, int col) { printf("玩家下棋->\n"); int x = 0; int y = 0;
while (1) { 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("输入坐标错误！\n"); } } else { printf("坐标非法，重新输入！\n"); } } } //电脑下棋 void
computer_move(char board[ROW][COL], int row, int col) { int x = 0; int y = 0;
printf("电脑下棋->\n"); while (1) { x = rand() % ROW; y = rand() % COL; if (board[x]
[y] == ' ') { board[x][y] = '#'; break; } } } //判断棋盘是否已满 int is_full(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;
} //判断赢家 char is_win(char board[ROW][COL], int row, int col) { int i = 0; int j
= 0; int P = 0; int C = 0; int win = 0; while (i <= row)//判断行 { while (j < (col
- 1)) { if (board[i][j] == board[i][j + 1] && board[i][j] == '*') P++; if (board
[i][j] == board[i][j + 1] && board[i][j] == '#') C++; if (P == (row - 1)) return
'*'; else if (C == (row - 1)) return '#'; j++; } i++; } while (j <= row)//判断列 {
P= 0; C = 0; i = 0; while (i < (col - 1)) { if (board[i][j] == board[i + 1][j]
&& board[i][j] == '*') P++; if (board[i][j] == board[i + 1][j] && board[i][j] ==
'#') C++; if (P == (row - 1)) return '*'; else if (C == (row - 1)) return '#'; i
++; } j++; } P = 0; C = 0; for (i = 0; i < row; i++)//主对角线 { if (board[i][i] ==
board[i + 1][i + 1] && board[i][i] == '*') P++; if (board[i][i] == board[i + 1][
i+ 1] && board[i][i] == '#') C++; if (P == (row - 1)) return '*'; else if (C ==
(row - 1)) return '#'; } P = 0; C = 0; for (i = 0, j = (col - 1); i < row, j > 0
; i++, j--)//副对角线 { if (board[i][j] == board[i + 1][j - 1] && board[i][j] == '*'
) P++; if (board[i][j] == board[i + 1][j - 1] && board[i][j] == '#') C++; if (P
== (row - 1)) return '*'; else if (C == (row - 1)) return '#'; } //判断平局 if (1 ==
is_full(board, row, col)) { return 'Q'; } //继续 return 'C'; }
test.c
#include <stdio.h> #include "game.h" void menu() { printf(
"***************************\n"); printf("********* 1.play ********\n"); printf(
"********* 0.exit ********\n"); printf("***************************\n"); } void
game() { char board[ROW][COL] = { 0 }; InitBoard(board, ROW, COL);//初始化棋盘
DisplayBoard(board, ROW, COL); char ret = 0; while (1) { player_move(board, ROW,
COL); DisplayBoard(board, ROW, COL); ret = is_win(board, ROW, COL); if (ret !=
'C') { break; } computer_move(board, ROW, COL); DisplayBoard(board, ROW, COL);
ret= is_win(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 2: printf("退出游戏\n"); break; default: printf("选择错误\n"); break; } } while (
input); } int main() { test(); return 0; }
对了，修改头文件中的宏定义可以实现N子棋哦！