C++ 错误 : Invalid conversion from 'char' to 'const char*'

Question

我是 C++ 的新手，我创建了这个函数:

bool guessWord(string compWord)
{
    cout << "Guess a letter: ";
    string userLetter;
    cin >> userLetter;
    for (unsigned int x = 0; x < compWord.length(); x++)
    {
        string compLetter = compWord[x];
        if (compLetter == userLetter)
        {
            return true;
        }
    }
    return false;
}

但它返回以下错误:从'char'到'const char*'的无效转换[-fpermissive]。谁能帮我理解这是什么意思？

Answer 1

string compLetter = compWord[x];

compWord[x] 获取 char 而您试图将其分配给 string，这是错误的。但是，您的代码应该类似于

bool guessWord(string compWord)
{
    cout << "Guess a letter: ";
    char userLetter;
    cin >> userLetter;
    for (unsigned int x = 0; x < compWord.length(); x++)
    {
        char compLetter = compWord[x];
        if (compLetter == userLetter)
        {
            return true;
        }
    }
    return false;
}