随机掷硬币的井字游戏

【问题标题】：Tic Tac Toe with Random coin flip随机掷硬币的井字游戏
【发布时间】：2018-11-05 04:06:35
【问题描述】：

课堂作业问题：我必须生成一个井字游戏，该游戏使用抛硬币来确定谁先走。我已经生成了大部分代码，但仍有一些我无法弄清楚的事情/错误。

  1. 我知道如何掷硬币。但是，我如何让程序选择谁先走。
  2. 获胜方格或游戏结束方格上没有 X 或 O。
  3. 没有平局的消息。

  4. 不输入任何值直接按回车没有消息。

    #include "pch.h"
#include <iostream>
#include <string>
#include <cstdlib>
#include <time.h>


using namespace std;

void Flip_Coin();
void Do_Exercise();
void Display_Board();
void Ask_Turn();
char Check_Winner();
void Computer_Player_Turn();

char Board[3][3] = { '1', '2', '3', '4', '5', '6', '7', '8', '9' };

int n = 0;

int main()
{
    srand(time(0));

    Do_Exercise();

    cin.get();

    return 0;
}

void Do_Exercise()
{
    Flip_Coin();
    while (true)
    {
        n++;
        Display_Board();
        Ask_Turn();
        if (Check_Winner() == 'X')
        {
            cout << "Human Wins!" << endl;
            break;
        }
        else if (Check_Winner() == 'O')
        {
            cout << "Computer Wins!" << endl;
            break;
        }
        else if (Check_Winner() == 'T' && n == 9)
        {

            cout << "It's a draw." << endl;
            break;
        }
        Computer_Player_Turn();
        if (Check_Winner() == 'X')
        {
            cout << "Human Wins!" << endl;
            break;
        }
        else if (Check_Winner() == 'O')
        {
            cout << "Computer Wins!" << endl;
            break;
        }
        else if (Check_Winner() == 'T' && n == 9)
        {

            cout << "It's a draw." << endl;
            break;
        }
    }
}

void Flip_Coin()
{
    int Flip;

    cout << "Welcome to Tic - Tac - toe.\n\n"
        << "Wait I am flipping a coin to see who goes first . . .\n\n";

    Flip = rand() % 2;

    if (Flip == 0)
    {
        cout << "Computer wins coin toss.\n\n";
    }
    else
    {
        cout << "Human wins coin toss.\n\n";
    }
    cout << "The board is laid out like this:\n\n";
}

void Display_Board()
{
    for (int Row = 0; Row < 3; Row++)
    {
        for (int Column = 0; Column < 3; Column++)
        {
            cout << Board[Row][Column] << "\t";
        }
        cout << "\n\n";
    }
}

void Ask_Turn()
{
    string input;

    while (true)
    {
        cout << "Enter the position to place your X: ";
        cin >> input;
        cout << endl;

        if (input != "")
        {
            char entered = input.c_str()[0]; // sets char character to act in place of string

            if (entered >= '1' && entered <= '9')
            {
                cout << "The human places a X-token at position: " << entered << "\n\n";
                cout << "Current board:\n\n";
                int entered_number = entered - '0'; // changes char to int form
                int index = entered_number - 1;

                int row = index / 3;
                int col = index % 3;

                char grid_position = Board[row][col];

                if (grid_position == 'X' || grid_position == 'O')
                {
                    cout << "That position is already taken. ";
                }
                else {
                    Board[row][col] = 'X';
                    break;
                }
            }
            else {
                cout << "You must entered in the the range of 1-9.\n";
            }
        }
        else {
            cout << "You must enter something!"; // doesnt work
        }
    }
}

char Check_Winner()
{
    //first player
    if (Board[0][0] == 'X' && Board[0][1] == 'X' && Board[0][2] == 'X')
        return 'X';
    if (Board[1][0] == 'X' && Board[1][1] == 'X' && Board[1][2] == 'X')
        return 'X';
    if (Board[2][0] == 'X' && Board[2][1] == 'X' && Board[2][2] == 'X')
        return 'X';

    if (Board[0][0] == 'X' && Board[1][0] == 'X' && Board[2][0] == 'X')
        return 'X';
    if (Board[0][1] == 'X' && Board[1][1] == 'X' && Board[2][1] == 'X')
        return 'X';
    if (Board[0][2] == 'X' && Board[1][2] == 'X' && Board[2][2] == 'X')
        return 'X';

    if (Board[0][0] == 'X' && Board[1][1] == 'X' && Board[2][2] == 'X')
        return 'X';
    if (Board[2][0] == 'X' && Board[1][1] == 'X' && Board[0][2] == 'X')
        return 'X';

    //second player
    if (Board[0][0] == 'O' && Board[0][1] == 'O' && Board[0][2] == 'O')
        return 'O';
    if (Board[1][0] == 'O' && Board[1][1] == 'O' && Board[1][2] == 'O')
        return 'O';
    if (Board[2][0] == 'O' && Board[2][1] == 'O' && Board[2][2] == 'O')
        return 'O';

    if (Board[0][0] == 'O' && Board[1][0] == 'O' && Board[2][0] == 'O')
        return 'O';
    if (Board[0][1] == 'O' && Board[1][1] == 'O' && Board[2][1] == 'O')
        return 'O';
    if (Board[0][2] == 'O' && Board[1][2] == 'O' && Board[2][2] == 'O')
        return 'O';

    if (Board[0][0] == 'O' && Board[1][1] == 'O' && Board[2][2] == 'O')
        return 'O';
    if (Board[2][0] == 'O' && Board[1][1] == 'O' && Board[0][2] == 'O')
        return 'O';

    return 'T';
}

void Computer_Player_Turn()
{
    while (true)
    {
        int computer_choice = (rand() % 9) + 1;

        int row = (computer_choice - 1) / 3;
        int col = (computer_choice - 1) % 3;

        char grid_position = Board[row][col];

        if (grid_position == 'X' || grid_position == 'O')
        {
            continue;
        }
        else {
            cout << "The Computer places a O-token at position: " << computer_choice << "\n\n";
            Board[row][col] = 'O';
            break;
        }
    }
}

【问题讨论】：

  • 1) 现在您已经硬编码为先调用Ask_Turn，然后再调用Computer_Player_Turn。不要以这种方式调用它们，而是先从硬币翻转调用它们，然后让两个函数相互调用。 3) 在有Check_Winner() == 'T' 的两行中将 n==9 更改为 n==8 4) 在 while 循环中请求输入，只要输入为空就在循环中。

标签： c++ tic-tac-toe


【解决方案1】：

这里是解决方案。

1) 现在您已经硬编码为先调用Ask_Turn，然后再调用Computer_Player_Turn。不要用这种方式调用它们，而是先从硬币翻转中调用它们，然后让两个函数在它们完成时相互调用。

2) 在检查获胜者之前致电Display_Board()。

3) 固定在这里。每 2 回合您只需将 n 加 1。

4) 在while循环中请求输入，只要输入为空就在循环中

因此，进行所有这些更改后，代码应该类似于下面的内容。

这里的代码我已经测试过了，https://onlinegdb.com/S1Qdcr63X

#include <iostream>
#include <string>
#include <cstdlib>
#include <time.h>


using namespace std;

void Flip_Coin();
void Do_Exercise();
void Display_Board();
void Ask_Turn();
char Check_Winner();
void Computer_Player_Turn();

char Board[3][3] = { '1', '2', '3', '4', '5', '6', '7', '8', '9' };

int n = 0;

void Computer_Player_Turn();
void Ask_Turn();

int main()
{
    srand(time(0));

    Do_Exercise();

    cin.get();

    return 0;
}

void Do_Exercise()
{
    Flip_Coin();
}

void Flip_Coin()
{
    int Flip;

    cout << "Welcome to Tic - Tac - toe.\n\n"
        << "Wait I am flipping a coin to see who goes first . . .\n\n";

    Flip = rand() % 2;

    if (Flip == 0)
    {
        cout << "Computer wins coin toss.\n\n";
        Computer_Player_Turn();
    }
    else
    {
        cout << "Human wins coin toss.\n\n";
        Ask_Turn();
    }
}

void Display_Board()
{
    for (int Row = 0; Row < 3; Row++)
    {
        for (int Column = 0; Column < 3; Column++)
        {
            cout << Board[Row][Column] << "\t";
        }
        cout << "\n\n";
    }
}


char Check_Winner()
{
    //first player
    if (Board[0][0] == 'X' && Board[0][1] == 'X' && Board[0][2] == 'X')
        return 'X';
    if (Board[1][0] == 'X' && Board[1][1] == 'X' && Board[1][2] == 'X')
        return 'X';
    if (Board[2][0] == 'X' && Board[2][1] == 'X' && Board[2][2] == 'X')
        return 'X';

    if (Board[0][0] == 'X' && Board[1][0] == 'X' && Board[2][0] == 'X')
        return 'X';
    if (Board[0][1] == 'X' && Board[1][1] == 'X' && Board[2][1] == 'X')
        return 'X';
    if (Board[0][2] == 'X' && Board[1][2] == 'X' && Board[2][2] == 'X')
        return 'X';

    if (Board[0][0] == 'X' && Board[1][1] == 'X' && Board[2][2] == 'X')
        return 'X';
    if (Board[2][0] == 'X' && Board[1][1] == 'X' && Board[0][2] == 'X')
        return 'X';

    //second player
    if (Board[0][0] == 'O' && Board[0][1] == 'O' && Board[0][2] == 'O')
        return 'O';
    if (Board[1][0] == 'O' && Board[1][1] == 'O' && Board[1][2] == 'O')
        return 'O';
    if (Board[2][0] == 'O' && Board[2][1] == 'O' && Board[2][2] == 'O')
        return 'O';

    if (Board[0][0] == 'O' && Board[1][0] == 'O' && Board[2][0] == 'O')
        return 'O';
    if (Board[0][1] == 'O' && Board[1][1] == 'O' && Board[2][1] == 'O')
        return 'O';
    if (Board[0][2] == 'O' && Board[1][2] == 'O' && Board[2][2] == 'O')
        return 'O';

    if (Board[0][0] == 'O' && Board[1][1] == 'O' && Board[2][2] == 'O')
        return 'O';
    if (Board[2][0] == 'O' && Board[1][1] == 'O' && Board[0][2] == 'O')
        return 'O';

    return 'T';
}

bool winner()
{
    if (Check_Winner() == 'X')
    {
        cout << "Human Wins!" << endl;
        return true;
    }
    else if (Check_Winner() == 'O')
    {
        cout << "Computer Wins!" << endl;
        return true;
    }
    else if (Check_Winner() == 'T' && n == 9)
    {

        cout << "It's a draw." << endl;
        return true;
    }
    return false;
}

void Ask_Turn()
{
    n++;

    string input = "";

    while (true)
    {
        do
        {
            cout << "Enter the position to place your X: ";
            cin >> input;
            cout << endl;
        }
        while(input == ""  || (input.c_str()[0] < '1' || input.c_str()[0] > '9'));


        char entered = input.c_str()[0]; // sets char character to act in place of string

        cout << "The human places a X-token at position: " << entered << "\n\n";
        cout << "Current board:\n\n";
        int entered_number = entered - '0'; // changes char to int form
        int index = entered_number - 1;

        int row = index / 3;
        int col = index % 3;

        char grid_position = Board[row][col];

        if (grid_position == 'X' || grid_position == 'O')
        {
            cout << "That position is already taken. ";
            n--;
            Ask_Turn();
        }
        else {
            Board[row][col] = 'X';
            break;
        }
    }


    Display_Board();

    if(winner())
        return;
    else
     Computer_Player_Turn();
}

void Computer_Player_Turn()
{
    n++;
    while (true)
    {
        int computer_choice = (rand() % 9) + 1;

        int row = (computer_choice - 1) / 3;
        int col = (computer_choice - 1) % 3;

        char grid_position = Board[row][col];

        if (grid_position == 'X' || grid_position == 'O')
        {
            continue;
        }
        else {
            cout << "The Computer places a O-token at position: " << computer_choice << "\n\n";
            Board[row][col] = 'O';
            break;
        }
    }

    Display_Board();

    if(winner())
        return;
    else
        Ask_Turn();
}

【讨论】：

  • 非常感谢。回答了我所有的问题。我刚刚摆脱了条件： if (input != "") and else (cout
  • @Fummy 我已经编辑了代码并从Ask_Turn 中删除了两个if 语句，因为do while 循环已经检查了这两个条件。
  • Tyty，但平局条件未返回 Xs 和 Os 的完整显示。将条件 (Check_Winner() == 'T' && n == 8) 更改回 n==9 解决了这个问题。您在检查获胜者之前调用 Display_Board() 的解决方案已经修复了这些错误。感谢您的帮助:)。
  • 啊，是的，对不起。那是因为n=1在第一步之前所以它应该以9结尾。
  • @Fummy，如果此解决方案对您有用，请接受此作为答案，以便将问题标记为已解决。
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