设计总体思路
实现游戏可以一直玩，先打印棋盘，玩家和电脑下棋，最后分出胜负。
具体步骤
目录
一、打印游戏菜单界面
二、打印棋盘
三、玩家下棋
四、电脑下棋
五、判断输赢
一、打印游戏菜单界面
首先界面有选项选择，开始你的游戏，代码以及效果图如下：
void menu()//打印菜单{printf("******************\n");printf("******1.play******\n");printf("******0.exit******\n");printf("******************\n");}int main(){int input = 0;srand((unsigned int)time(NULL));//电脑随机产生数字do{menu();printf("请选择->\n");scanf("%d", &input);switch (input)//选择选项{case 1:game();break;case 0:printf("退出游戏\n");break;default:printf("输入错误，请重新输入\n");}} while (input);return 0;}
二、打印棋盘
创建并初始化数组，再打印棋盘，代码以及效果图如下：
//存放下棋数据char board[ROW][COL] = { 0 };//初始化棋盘为全空格InitBoard(board, ROW, COL);//初始化棋盘为空格void InitBoard(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++){board[i][j] = ' ';}}}//打印棋盘void DisplayBoard(char board[ROW][COL], int row, int col)//打印棋盘{//打印数据int i = 0;for (i = 0; i < row; i++){int j = 0;for (j = 0; j < col; j++){printf(" %c ",board[i][j]);//别忘记board[i][j]if (j < col - 1){printf("|");}}printf("\n");//打印分割行if (i < row-1)//记住 row-1{for (j = 0; j < col; j++){printf("---");if (j < col - 1){printf("|");}}printf("\n");}}}
三、玩家下棋
'*' 代表玩家下的棋子。
代码思路，第一步创建玩家下棋的函数player_move（）并输入坐标，代码图如下：
//玩家下棋void player_move(char board[ROW][COL], int row, int col){int x = 0;int y = 0;printf("玩家下棋\n");while (1){printf("请输入坐标：");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，请重新输入\n");}}else{printf("非法坐标，请重新输入\n");}}}
四、电脑下棋
'#' 代表电脑下的棋子。
代码思路，第一步创建电脑下棋的函数computer_move（）并输入坐标，代码图如下：
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() % 3;y = rand() % 3;if (board[x][y] == ' '){board[x][y] = '#';break;}}}
五、判断输赢
创建判断输赢的is_win()函数，while()循环实现玩家和电脑可以轮流下直到一方胜利，
如果有三个 '*' 符号连成一条线，代表玩家获胜，如果有三个 '#' 符号连成一条线，代表电脑获胜，或者平局。is_win（）函数中玩家赢返回'*'，电脑赢返回-'#'，平局返回'Q'，继续返回'C',
while (1)//玩家和电脑轮流下棋，直到一方胜利{ //玩家下棋player_move(board, ROW, COL);//打印棋盘DisplayBoard(board, ROW, COL);ret = is_win(board, ROW, COL);if (ret != 'C'){break;}//电脑下棋computer_move(board, ROW, COL);//打印棋盘DisplayBoard(board, ROW, COL);ret = is_win(board, ROW, COL);if (ret != 'C'){break;}}if (ret == '*'){printf("玩家获胜\n");}else if (ret == '#'){printf("电脑获胜\n");}else // (ret == 'Q'){printf("平局\n");}DisplayBoard(board, ROW, COL);}//判断输赢char is_win(char board[ROW][COL], int row, int col){//判断每一行是否都相等int i = 0;for (i = 0; i < col; i++){if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][1] != ' '){return board[i][1];}}//判断每一列是否都相等for (i = 0; i < col; i++){if (board[0][i] == board[1][i] && board[1][i] == board[2][i] && board[1][i] != ' '){return board[i][1];}}//判断对角线是否都相等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];}//判断平局if (is_full(board, row, col) == 1){return 'Q';}//继续return 'C';}
最后整理代码
#define _CRT_SECURE_NO_WARNINGS 1#include<stdio.h>#include<stdlib.h>#include<time.h>#define ROW 3#define COL 3//初始化棋盘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(char board[ROW][COL], int row, int col);//电脑下棋void computer_move(char board[ROW][COL], int row, int col);//判断输赢char is_win(char board[ROW][COL], int row, int col);//初始化棋盘为空格void InitBoard(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++){board[i][j] = ' ';}}}void DisplayBoard(char board[ROW][COL], int row, int col)//打印棋盘{//打印数据int i = 0;for (i = 0; i < row; i++){int j = 0;for (j = 0; j < col; j++){printf(" %c ", board[i][j]);//别忘记board[i][j]if (j < col - 1){printf("|");}}printf("\n");//打印分割行if (i < row - 1)//记住 row-1{for (j = 0; j < col; j++){printf("---");if (j < col - 1){printf("|");}}printf("\n");}}}void player_move(char board[ROW][COL], int row, int col){int x = 0;int y = 0;printf("玩家下棋\n");while (1){printf("请输入坐标：");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，请重新输入\n");}}else{printf("非法坐标，请重新输入\n");}}}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() % 3;y = rand() % 3;if (board[x][y] == ' '){board[x][y] = '#';break;}}}static int is_full(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++){if (board[i][j] == ' '){return 0;//没满}}}return 1;}//判断输赢char is_win(char board[ROW][COL], int row, int col){//判断每一行是否都相等int i = 0;for (i = 0; i < col; i++){if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][1] != ' '){return board[i][1];}}//判断每一列是否都相等for (i = 0; i < col; i++){if (board[0][i] == board[1][i] && board[1][i] == board[2][i] && board[1][i] != ' '){return board[i][1];}}//判断对角线是否都相等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];}//判断平局if (is_full(board, row, col) == 1){return 'Q';}//继续return 'C';}void menu(){printf("******************\n");printf("******1.play******\n");printf("******0.exit******\n");printf("******************\n");}void game(){int ret = 0;//存放下棋数据char board[ROW][COL] = { 0 };//初始化棋盘为全空格InitBoard(board, ROW, COL);//打印棋盘DisplayBoard(board, ROW, COL);//玩家赢返回'*'//电脑赢返回'#'//平局返回'Q'//继续返回'C'while (1){ //玩家下棋player_move(board, ROW, COL);//打印棋盘DisplayBoard(board, ROW, COL);ret = is_win(board, ROW, COL);if (ret != 'C'){break;}//电脑下棋computer_move(board, ROW, COL);//打印棋盘DisplayBoard(board, ROW, COL);ret = is_win(board, ROW, COL);if (ret != 'C'){break;}}if (ret == '*'){printf("玩家获胜\n");}else if (ret == '#'){printf("电脑获胜\n");}else // (ret == 'Q'){printf("平局\n");}DisplayBoard(board, ROW, COL);}int main(){int input = 0;srand((unsigned int)time(NULL));do{menu();printf("请选择->\n");scanf("%d", &input);switch (input){case 1:game();break;case 0:printf("退出游戏\n");break;default:printf("输入错误，请重新输入\n");}} while (input);return 0;}
运行效果图：
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