class TicTacToe { private: int qipan[3][3]; TicTacToe *people1; TicTacToe *people2; public: TicTacToe() { *people1 = nullptr; for (int i = 0; i < 3; i++) { for (int j = 0; j < 3; j++) { qipan[i][j] = 0; } } } void print() { for (int i = 0; i < 3; i++) { cout << endl; for (int j = 0; j < 3; j++) { cout << qipan[i][j]; } } } }; int main() { TicTacToe t; t.print(); }这段代码中的指针如何初始化
时间: 2024-03-03 21:49:38 浏览: 15
可以将people1和people2指针初始化为nullptr,表示它们当前不指向任何对象。初始化方式如下:
```
TicTacToe() {
people1 = nullptr;
people2 = nullptr;
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
qipan[i][j] = 0;
}
}
}
```
注意,指针的初始化不能通过解引用空指针来实现,因为这是未定义行为。应该直接将指针初始化为nullptr,或者指向有效的对象。
相关问题
class TicTacToe { private: int qipan[3][3]; TicTacToe *people1; TicTacToe *people2; public: TicTacToe() { *people1 = nullptr; for (int i = 0; i < 3; i++) { for (int j = 0; j < 3; j++) { qipan[i][j] = 0; } } } void print() { for (int i = 0; i < 3; i++) { cout << endl; for (int j = 0; j < 3; j++) { cout << qipan[i][j]; } } } }; int main() { TicTacToe t; t.print(); }
这是一个简单的井字棋游戏的类模板,使用二维数组来存储棋盘,其中0表示空位,1表示玩家1放置的棋子,2表示玩家2放置的棋子。构造函数初始化棋盘为全0。print()函数用于输出棋盘到控制台。然而,这个类模板存在一个问题:people1和people2两个指针没有被初始化,应该将其初始化为nullptr或者其他有效的指针。
用java实现TICTACTOE游戏
好的,下面是一个简单的Java实现TicTacToe游戏的示例代码:
```java
import java.util.Scanner;
public class TicTacToe {
private char[][] board; // 存储游戏棋盘
private char currentPlayer; // 当前玩家
public TicTacToe() {
board = new char[3][3];
currentPlayer = 'X';
initializeBoard();
}
// 初始化游戏棋盘
private void initializeBoard() {
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
board[i][j] = '-';
}
}
}
// 打印游戏棋盘
public void printBoard() {
System.out.println("-------------");
for (int i = 0; i < 3; i++) {
System.out.print("| ");
for (int j = 0; j < 3; j++) {
System.out.print(board[i][j] + " | ");
}
System.out.println();
System.out.println("-------------");
}
}
// 切换玩家
public void switchPlayer() {
if (currentPlayer == 'X') {
currentPlayer = 'O';
} else {
currentPlayer = 'X';
}
}
// 检查是否有玩家获胜
public boolean checkWin() {
return (checkRows() || checkColumns() || checkDiagonals());
}
// 检查行是否有玩家获胜
private boolean checkRows() {
for (int i = 0; i < 3; i++) {
if (checkRowCol(board[i][0], board[i][1], board[i][2])) {
return true;
}
}
return false;
}
// 检查列是否有玩家获胜
private boolean checkColumns() {
for (int i = 0; i < 3; i++) {
if (checkRowCol(board[0][i], board[1][i], board[2][i])) {
return true;
}
}
return false;
}
// 检查对角线是否有玩家获胜
private boolean checkDiagonals() {
return (checkRowCol(board[0][0], board[1][1], board[2][2])
|| checkRowCol(board[0][2], board[1][1], board[2][0]));
}
// 检查一行或一列是否有玩家获胜
private boolean checkRowCol(char c1, char c2, char c3) {
return ((c1 != '-') && (c1 == c2) && (c2 == c3));
}
// 下棋
public void makeMove(int row, int col) {
board[row][col] = currentPlayer;
}
// 运行游戏
public void play() {
Scanner scanner = new Scanner(System.in);
System.out.println("Tic Tac Toe Game");
System.out.println("Player 1: X");
System.out.println("Player 2: O");
System.out.println("-------------");
printBoard();
while (!checkWin()) {
System.out.println("Player " + currentPlayer + ", enter your move (row[1-3] column[1-3]):");
int row = scanner.nextInt() - 1;
int col = scanner.nextInt() - 1;
if (row >= 0 && row < 3 && col >= 0 && col < 3 && board[row][col] == '-') {
makeMove(row, col);
printBoard();
switchPlayer();
} else {
System.out.println("Invalid move. Please try again.");
}
}
System.out.println("Player " + currentPlayer + " wins!");
scanner.close();
}
public static void main(String[] args) {
TicTacToe game = new TicTacToe();
game.play();
}
}
```
以上就是一个简单的Java实现TicTacToe游戏的示例代码。