c++小练习——编写三子棋游戏程序（修改宏定义N，可变成四子棋、五子棋、六子棋....)，代码如下：
//c++小练习——编写三子棋游戏程序 #include#include #include using namespace std; #define N 3//棋盘大小定义 void game(); void menu(); void initialize_board(char board[][N]); void print_board(char board[][N]); void player_play(char board[][N]); void computer_play(char board[][N]); int board_full(char board[][N]); char game_state(char board[][N]); int main() { int input = 0; srand((unsigned int)time(NULL)); do//菜单选择 { menu(); cout << "请选择(1/0)： "; cin >> input; switch (input) { case 1: cout << "开始游戏" << endl; game(); break; case 0: cout << "退出游戏" << endl; break; default: cout << "选择错误，请重新选择" << endl; } } while (input); return 0; } void game()//游戏程序 { char board[N][N]; initialize_board(board); print_board(board); while (1) { player_play(board); print_board(board); if(game_state(board) != 'N')//判断游戏是否继续 break; computer_play(board); print_board(board); if(game_state(board) != 'N') break; } switch (game_state(board))//判断游戏结果 { case 'X': cout << "玩家获胜" << endl; print_board(board); break; case 'O': cout << "电脑获胜" << endl; print_board(board); break; case 'M': cout << "双方平局" << endl; print_board(board); break; } } void menu()//菜单 { cout << "************************" << endl; cout << "******** 三子棋 ********" << endl; cout << "******** 1.play ********" << endl; cout << "******** 0.exit ********" << endl; cout << "************************" << endl; } void initialize_board(char board[][N])//初始化棋盘 { int i = 0, j = 0; for (i = 0;i < N;i++) for (j = 0;j < N;j++) board[i][j] = ' '; } void print_board(char board[][N])//打印棋盘 { int i = 0, j = 0; for (i = 0; i < N; i++) { for (j = 0;j < N;j++) if (j < N - 1) cout <<" "<< board[i][j] << " |"; else cout << board[i][j] << endl; if (i < N - 1) { for (j = 0;j < N;j++) if (j < N - 1) cout << "----"; else cout << "---"; cout << endl; } } } void player_play(char board[][N])//玩家方下棋 { int x = 0, y = 0; cout << "轮到玩家方" << endl; while (1) { cout << "请玩家方输入下棋坐标（x y): "; cin >> x >> y; if ((x >= 1 && x <= N) && (y >= 1 && y <= N)) { if (board[x - 1][y - 1] == ' ') { board[x - 1][y - 1] = 'X'; break; } else cout << "输入坐标已被占用，请重新输入" << endl; } else cout << "坐标输入错误，请重新输入" << endl; } } void computer_play(char board[][N])//电脑方下棋 { cout << "轮到电脑方" << endl; cout << "电脑方正在下棋....." << endl; while (1) { int x = rand()%N; int y = rand()%N; if (board[x][y] == ' ') { board[x][y] = 'O'; break; } } } int board_full(char board[][N])//判断棋盘满与否 { int i = 0; int j = 0; for (i = 0; i < N; i++) for (j = 0;j < N;j++) if (board[i][j] == ' ') return 1;//棋盘没满 return 0;//棋盘满了 } char game_state(char board[][N])//游戏状态判断（玩家赢了/电脑赢了/平局/游戏继续） { int i = 0, j = 0, count = 0; //判断获胜条件：行相等 for (i = 0; i < N; i++) { count = 0; for (j = 0;j < N;j++) { if ((board[i][0] == board[i][j]) && (board[i][0] != ' ')) count++; } if (count == N) return board[i][0]; } //判断获胜条件：列相等 for (i = 0; i < N; i++) { count = 0; for (j = 0;j < N;j++) { if ((board[0][i] == board[j][i]) && (board[0][i] != ' ')) count++; } if (count == N) return board[0][i]; } //判断获胜条件：左对角斜相等 count = 0; for (i = 0;i < N;i++) { if ((board[0][0] == board[i][i])&&(board[0][0]!=' ')) count++; } if (count == N) return board[0][0]; //判断获胜条件：右对角斜相等 count = 0; for (i = 0;i < N;i++) { if ((board[0][N - 1] == board[i][N - i - 1])&&(board[0][N-1] != ' ')) count++; } if (count == N) return board[0][N-1]; if (board_full(board)) return 'N'; else return 'M'; }//玩家赢了返回X；电脑赢了返回O；平局返回M；游戏继续返回N
程序执行结果：
