Play Again?

void PlayAgain()
{
    string strRestartChoice;
    bool bValidEntry;

    do
    {
        cout << "Would you like to play again? (y/n):";

        cin >> strRestartChoice;

        if(strRestartChoice.at(0) == 89 || strRestartChoice.at(0) == 121)
        {
            bRestartGame = true;
            bValidEntry = true;
        } else if (strRestartChoice.at(0) == 78 || strRestartChoice.at(0) == 110) {
            bRestartGame = false;
            bValidEntry = true;
        } else {
            bValidEntry = false;
            cout << "Error. Invalid input\n";
        }

        getline(cin, strRestartChoice);

    } while (!bValidEntry);

}