guess number

#include <iostream>
#include <vector>
#include <string>
#include <ctime>

#define LOW 0
#define HIGH 100

using namespace std;

class Player {
private:
    int low = LOW;
    int high = HIGH;
public:
    virtual int getGuess() = 0;
    void setLow(int ip) { low = ip; }
    void setHigh(int ip) { high = ip; }
    int getLow() { return low; }
    int getHigh() { return high; }
    void ShowRange() { cout << low << "~" << high << endl; }
    void Clear(){
        low = LOW;
        high = HIGH;
    }
};

class HumanPlayer :public Player {
public:
    int getGuess() {
        int temp;
        while (1) {
            //cout << "enter : ";
            cin >> temp;
            if (temp > getLow() && temp < getHigh()) {
                return temp;
            }
            else cout << "you guess out of range." << endl;
        }
    }
};

class ComputerPlayer :public Player {
public:
    int getGuess() {
        int temp = rand() % (getHigh() - getLow() - 1) + 1 + getLow();
        cout << "computer guess " << temp << endl;
        return temp;
    }
};

int checkForWin(int guess, int answer)
{
    if (answer == guess)
    {
        cout << "You're right! You win!" << endl;
        return 1;
    }
    else if (answer < guess) {
        cout << "Your guess is too high." << endl;
        return 0;
    }
    else {
        cout << "Your guess is too low." << endl;
        return -1;
    }
}

void play(Player &player1, Player &player2)
{
    srand(time(NULL));

    int answer = 0, guess = 0;
    answer = rand() % 99 + 1;
    int win = 0;

    while (1)
    {
        cout << "Player 1's turn to guess." << endl;
        guess = player1.getGuess();
        win = checkForWin(guess, answer);
        if (win == 1) {
            player1.Clear();
            player2.Clear();
            return;
        }
        else if (win == 0) {
            player1.setHigh(guess);
            player2.setHigh(guess);
        }
        else {
            player1.setLow(guess);
            player2.setLow(guess);
        }
        player1.ShowRange();

        cout << "Player 2's turn to guess." << endl;
        guess = player2.getGuess();
        win = checkForWin(guess, answer);
        if (win == 1) {
            player1.Clear();
            player2.Clear();
            return;
        }
        else if (win == 0) {
            player1.setHigh(guess);
            player2.setHigh(guess);
        }
        else {
            player1.setLow(guess);
            player2.setLow(guess);
        }
        player1.ShowRange();
    }
}

int main()
{
    HumanPlayer playerH1, playerH2;
    ComputerPlayer playerC1, playerC2;

    play(playerH1, playerH2);
    play(playerH1, playerC1);
    play(playerC1, playerC2);

    return 0;
}