Naive algorithm to get the next words in a word ladder

getNextWordsForWord.cpp

vector<string> getNextWordsForWord(string word, vector<string> wordList) 
{
    vector<string> nextWords;

    for (size_t i = 0; i < wordList.size(); ++i)
    {
        int diff = getDiffCount(word, wordList[i]);
        
        if (diff == 1)
        {
            nextWords.push_back(wordList[i]);
        }
    }

    return nextWords;
}