猜 1-100 内的数字，范围逐渐缩小

void guessNumber()
{
    uniform_int_distribution<unsigned> creator1To100(1, 100);
    default_random_engine engin;

    auto answer    = creator1To100(engin);
    unsigned low   = 1;
    unsigned high  = 100;

    while (true){
        cout << "Guess a number:
";
        unsigned guess = 1;
        cin >> guess;
        
        if(guess == answer){
            cout << "Yeah, Binggo!!!!";
            return;
        }
        
        uniform_int_distribution<unsigned> lowBoundCreator(low, answer - 1);
        low = lowBoundCreator(engin);
        
        uniform_int_distribution<unsigned> highBoundCreator(answer + 1, high);
        high = highBoundCreator(engin);
        
        cout << "The number between the " << low << " and " << high << endl;
    }
}