Guessing Game 01

#include <iostream>
#include <cstdlib>
#include <ctime>

using namespace std;

int genRandMax(int nMax)
// Generates an integer between 0 and nMax;
{
    return rand() % nMax;
}

int main()
{
    srand(time(0));

    bool bRunning = true;

    // Difficulty
    const int nEasyMax = 100;
    const int nMedMax = 500;
    const int nHardMax = 1000;

    while (bRunning)
    {
        int nRandNumber;

        int nPlayerDifficultyChoice;
        const int *nCurrentDifficulty;
        cout << "Please choose your difficulty \n1) Easy (0 - " << nEasyMax << ") \n2) Medium (0 - " << nMedMax << ") \n3) Hard (0 - " << nHardMax << ")" << endl;
        cin >> nPlayerDifficultyChoice;
        cout << endl;

        switch (nPlayerDifficultyChoice) {
            case(1): {
                nCurrentDifficulty = &nEasyMax;
                break;
            }
            case(2): {
                nCurrentDifficulty = &nMedMax;
                break;
            }
            case(3): {
                nCurrentDifficulty = &nHardMax;
                break;
            }
            default: {
                nCurrentDifficulty = &nEasyMax;
                break;
            }
        }

        nRandNumber = genRandMax(*nCurrentDifficulty);

        bool bWon = false;

        int nPlayerGuess = 0;

        while (!bWon)
        {
            //cout << "The number is " << nRandNumber << endl;

            cout << "Guess an integer between 0 and " << *nCurrentDifficulty << endl;
            cin >> nPlayerGuess;
            cout << endl;

            if (nPlayerGuess > nRandNumber) {
                cout << "Nope, too high" << endl;
            } else if (nPlayerGuess < nRandNumber) {
                cout << "Nope, too low" << endl;
            } else if (nPlayerGuess == nRandNumber) {
                cout << "You got it!" << endl;
                bWon = true;
            } else {
                cout << "Something went wrong :(" << endl;
                exit(-1);
            }
        }


        char sContinueResponse = 'Y';
        cout << "Would you like to play again? (Y/N)" << endl;
        cin >> sContinueResponse;
        cout << endl;

        if (toupper(sContinueResponse) == 'Y') {
            bRunning = true;
        } else if (toupper(sContinueResponse) == 'N') {
            bRunning = false;
        } else {
            exit(-2);
        }
    }

    return(0);
}