Question

您好我尝试构建我的代码但它抛出一个异常，任何人都可以帮我解决它吗？以下是代码和输出。

谢谢

int main()
{
    char input;
    while (input!= 'g')
    {
        cout << "Welcome to my Scramble Word Game!" << endl << endl;
        cout << "a) Add Words into game database" << endl;
        cout << "b) Remove words" << endl;
        cout << "c) configure count down time" << endl;
        cout << "d) Start game" << endl;
        cout << "e) Select Game level" << endl;
        cout << "f) View score chart" << endl;
        cout << "g) Quit" << endl;
        cout << "Please enter an alphabet to select: ";
        cin >> input;
        cout << endl;

        switch(input)
        {
            case 'a': cout << "Please enter word not long than 16 characters" << endl;
                      write();
                      break;
            case 'b': cout << "Please enter word to remove" << endl;
                      cin >> delword;
                      removeWord(delword);
                      break;
            case 'c': cout << "c) configure count down time" << endl;
                      break;
            case 'd': cout << "Game Started" << endl;
                      startGame(sl);
                      break;
            case 'e': cout << "PLease select Game level" << endl;
                      cin >> sl;

                      break;
            case 'f': cout << "f) View score chart" << endl;
                      break;
            case 'g': cout << "g) Quit" << endl;
                      break;
            default: cout << "Invalid selection, please enter a alphabet"
                     << " from the entrees above.\n\n";
                     break;
        }
    }


    return 0;
}

void removeWord(string r)
{
    ifstream wordBase("Words Database.txt",ios::out);
    ofstream temp ("temp.txt");
    string line = "";
    while(getline(wordBase,line))
    {
        if(line != r)
            temp << line << endl;

    }

    temp.close();
    wordBase.close();
    remove("Words Database.txt");

    rename("temp.txt","Words Database.txt");


}

int write(void)
{
    ofstream outfile;
    string userInputOfWord;


    outfile.open("Words Database.txt" ,ios::app);
    cin.clear();
    cin >> userInputOfWord;
    outfile << userInputOfWord << endl;
    outfile.close();
    cout << "Word entered into database" << endl << endl;
    return 0;
}

void startGame(int sl)
{
    {
        int sl;
        string word;
        vector<string> levelList;
        srand(time(NULL));
        string guess;
        string words;
        vector<string> wordList;
        ifstream in ("Words Database.txt");

        while(in >> words)
        {
            wordList.push_back(words);
        }

        for(vector<string>::iterator it = wordList.begin(); it != wordList.end(); ++it)
        {
            cout << *it << ' ';

            switch(sl)
            {
                case 1 : if((*it).length() >= 2 && (*it).length() <= 7)
                         {
                             levelList.push_back(*it);
                         }

                         break;
                case 2 : if((*it).length() >= 8 && (*it).length() <= 15)
                         {
                             levelList.push_back(*it);
                         }
                         break;
                case 3 : if((*it).length() > 15)
                         {
                             levelList.push_back(*it);
                         }
                         break;

            }


        }


        string jumble = levelList.at(rand()% wordList.size());
        word = jumble;
        int length = jumble.size();
        for (int n=0;n<length;n++)
        {
            int index1 = (rand()%length);
            int index2 = (rand()%length);
            char temp = jumble[index1];
            jumble[index1]=jumble[index2];
            jumble[index2]=temp;
        }
        cout << "Scrambled word is "<< jumble << endl;
        cout << "Enter guess: ";
        cin >> guess;


        while (guess != word)
        {
            cout <<"Wrong attempt ... try again";
            cout << "\n\nYour guess: ";
            cin >> guess;
        }
        if (guess == word)
            cout << "\nYou are correct!\n";
        else
            cout << "\nThanks for playing.\n";
    }
}

欢迎来到我的争夺文字游戏！

a）在游戏数据库中添加单词 b）删除单词 c）配置倒计时 d）开始游戏 e）选择游戏关卡 f）查看得分图表 g）退出请输入字母表进行选择：d

游戏开始抛出'std :: out_of_range'实例后调用终止 what（）：vector :: _ M_range_check 苹果橙甜瓜lemondinosaur 跑完了;中止;实时：1s;用户：0ms; system：0ms

Answer 1

可能存在问题：

 switch(sl)

在此行之前，变量s1似乎没有在主要内容'e'之外的任何地方初始化。因此，在任何情况下（1,2,3），程序都不能push_back levelList的任何值。

此外，在main中初始化的sl无法正常使用，因为它在startGame中重新定义：

void startGame(int sl)
{
    {
        int sl;//should be removed

抛出'std :: out_of_range'的实例后调用C ++终止what（）：vector :: _ M_range_check

1 个答案: