//Defining the class

class Hangman
{
    private:
        vector<string> dictionary;          //stores all the words
        vector<string> secretWord;          //stores the secret word
        vector<string> misses;              //keeps record of wrong guesses
        vector<string> displayVector;           //Stores "_"
        string originalWord;                //stores a copy of secret word to display at the 
end of game.
        bool gameOver = false;                      //Flag to check if the player lost or 
still in the game.
        int totalAttempts;
            
    public:                                 
    void selectRandWord();                      
};

//This is the function i am having problem in.

void Hangman::selectRandWord()
{
    secretWord.clear();

//word is a basic string that stores a random word. lets say "Hello World".

    string word;
    srand(time(NULL)); 
    int random = (rand() % dictionary.size())   1;

//I store a random word from vector to word.

    word = dictionary[random];
    transform(word.begin(), word.end(), word.begin(), ::tolower);           
    originalWord = word;
    for (int index = 0; index < word.length(); index  ) 
    { 

//This line has the error: [Error] invalid user-defined conversion from 'char' to 'std::vectorstd::basic_string<char >::value_type&& {aka std::basic_string&&}' [-fpermissive]

//What I am trying to do is take each character from word(for example: "H") and push it back into the vector string secretWord.

        secretWord.push_back(word[index]); 
    } 
}

CodePudding user response：

Your secretWord is now a vector<string> type, so it's a collection of possibly many words, I'm not sure if that's what you really intend to have judging by the name. If it indeed is ok and you want to store every single character from word as a separate string in secretWord, then you need to replace push_back call with emplace_back call as the other method actually does two things at a time: constructs a string from the char you pass to it and appends the string to the end of the container, like this

secretWord.emplace_back(word[index]); 

Mere push_back fails because it needs to be provided with an object of the type your vector stores, so you could also solve your problem by explicitly constructing a string from your char:

secretWord.push_back(string(word[index])); 

I suggest you give a read to these: emplace back reference and push back reference if you're interested in copy/move details.