如何在C++猜词游戏中判定重复答案为错误并禁止重复得分？

我是编程新手，正在用C++开发一款猜词游戏。需求是：将玩家重复提交的答案判定为错误，且无法重复获得该单词的分数。我尝试过手动编写组合判断的方式，但因组合过多难以实现，附上当前代码及尝试的代码，寻求解决方案。

当前代码 #

#include <iostream>
#include <string>
using namespace std;
int main()
{

    int firstQPoint, secondQPoint, thirdQPoint, mane;
    char yourChoice, levelChoice, goBack;
    string yourFirstAnswer, yourSecondAnswer, yourThirdAnswer;

gameMenu:
    cout << "	 GUESS THE WORD GAME";
    cout << "	

 MADE BY GROUP FIVE";
    cout << "		

     1. PLAY | ENTER \"1\" TO PLAY ";
    cout << "		

     2. QUIT | ENTER \"2\" TO QUIT ";
    cout << "		

     3. RULES | ENTER \"3\" TO SEE THE RULES";
    cout << "		

     What Do You Want To Do : ";
    cin >> yourChoice;

    if (yourChoice == '1') {
        cout << "	 GUESS THE WORD GAME";
        cout << "	

 MADE BY GROUP FIVE";
    selectALevel:
        cout << "	

 OKAY, CHOOSE A LEVEL (1-3) : ";
        cin >> levelChoice;

        switch (levelChoice) {

        case ('1'):
            cout << "	 GUESS THE WORD GAME";
            cout << "	

 MADE BY GROUP FIVE";
            cout << "		

GIVE 3 BODY PARTS THAT STARTS WITH LETTER \"T\"";
            cout << "1 : ";
            cin >> yourFirstAnswer;
            if (yourFirstAnswer == "TOE", "TONGUE", "TOOTH") {
                cout << "

		NICE, YOU GOT A POINT!";
                firstQPoint = 1 + 0;
            }

            cout << "2 : ";
            cin >> yourSecondAnswer;
            if (yourSecondAnswer == "TOE", "TONGUE", "TOOTH") {
                cout << "

		NICE, YOU GOT A POINT!";
                secondQPoint = 1 + firstQPoint;
            }
            cout << "3 : ";
            cin >> yourThirdAnswer;
            if (yourThirdAnswer == "TOE", "TONGUE", "TOOTH") {
                cout << "

		NICE, YOU GOT A POINT!";
                thirdQPoint = 1 + secondQPoint;
            }

            break;
        case ('2'):
            break;
        case ('3'):
            break;
        default:
            goto selectALevel;
        }
    }

    else if (yourChoice == '3') {
        do {
            cout << "	 GUESS THE WORD RULES";
            cout << "		

1. ONLY USE UPPERCASE LETTERS";
            cout << "		

1. ONLY USE SINGULAR WORDS";
            cout << "		

 ENTER \"1\" TO GO BACK : ";
            cin >> goBack;
            if (goBack == '1') {
                goto gameMenu;
            }
        } while (goBack != '1');
    }

    else if (yourChoice == '2') {
        cout << "		

          Okay, Goodbye!";
    }
    return 0;
}

尝试的代码 #

#include <iostream>

using namespace std;
int main()
{

    int number, again;

    cout << "give 2 number";
    cin >> number;

    cout << "again :";
    cin >> again;

    if (number == 1 && again == 2) {
        cout << "correct";
        else if (number == 2 && again == 1)
        {
            cout << "correct";
        }
    }
}

内容的提问来源于stack exchange，提问作者John Carlo Nayan