Tac Tac Toe cin输入问题

Question

关于tic tac toe的问题我试图允许用户输入“0，0”(行/列)格式，否则将是无效的。错误是，如果我输入任何正确的网格号，它都会给出一个无效的错误。

“即-- '1,2‘

无效错误

无效错误

无效错误“

因此，如果用户输入的数字正确，则不会在任何网格中插入用户输入的内容。

所以这里是我的代码，任何建议/帮助都是值得感谢的。还请注意，我只是尝试验证和输入X和O，而不是真正检查用户是否平局/获胜

#include <iostream>
#include "Tictactoe.h"

using namespace std;

int main(){
char board[3][3]={{'.','.','.'},{'.','.','.'},{'.','.','.'}};
bool gameover(true);
int iPlayerTurn(1);

do {
    // Print board

cout << " -   0   1   2" << endl;
cout << "   +---+---+---+" << endl;

cout << " 0" << " | " << board[0][0] << " | " << board[0][1] << " | " << board[0][2] << " | " << endl;
cout << "   +---+---+---+" << endl;

cout << " 1" << " | " << board[1][0] << " | " << board[1][1] << " | " << board[1][2] << " | " << endl;
cout << "   +---+---+---+" << endl;

cout << " 2" << " | " << board[2][0] << " | " << board[2][1] << " | " << board[2][2] << " | " << endl;
cout << "   +---+---+---+" << endl;



char cPlayerMark;
    if (iPlayerTurn == 1) {
        cPlayerMark = 'X';
    } else {
        cPlayerMark = 'O';
    }
// check if move is valid

    std::cout << "Player" << iPlayerTurn << "'s move:" << std::endl;
    bool bValidMove;
    // Loop until we get a valid move
    do {
        char cNextMove;
        cin >> cNextMove;
        bValidMove = true;

        // Check for a valid move
        if (cNextMove == '0,0' && board[0][0] == '.') {
            board[0][0] = cPlayerMark;
        } else if (cNextMove == '0,1' && board[0][1] == '.') {
            board[0][1] = cPlayerMark;
        } else if (cNextMove == '0,2' && board[0][2] == '.') {
            board[0][2] = cPlayerMark;
        } else if (cNextMove == '1,0' && board[1][0] == '.') {
            board[1][0] = cPlayerMark;
        } else if (cNextMove == '1,1' && board[1][1] == '.') {
            board[1][1] = cPlayerMark;
        } else if (cNextMove == '1,2' && board[1][2] == '.') {
            board[1][2] = cPlayerMark;
        } else if (cNextMove == '2,0' && board[2][0] == '.') {
            board[2][0] = cPlayerMark;
        } else if (cNextMove == '2,1' && board[2][1] == '.') {
            board[2][1] = cPlayerMark;
        } else if (cNextMove == '2,2' && board[2][2] == '.') {
            board[2][2] = cPlayerMark;
        } else {
            cout << "Invalid Move. Try again." <<endl;
            bValidMove = false;
        }
    } while (!bValidMove);

}while (!gameover);
}

Answer 1

问题是您已经将cNextMove定义为字符而不是字符串。因此，无论用户输入多少个字符，它都只能包含一个字符。而这种比较永远是错误的。

如果你用gcc4.8编译你的代码，你实际上会得到如下的警告：

test.cpp:45:26: warning: multi-character character constant [-Wmultichar]
         if (cNextMove == '0,0' && board[0][0] == '.') {