Panel Panic

//Hydreigon_Lord
//Panel Panic
/*
 IF YOU ARE GETTING AN ERROR:
 Exit Code 16: Make sure the contestant file exists and is accessible.
 Exit Code 17: Make sure the contestant file contains at least one contestant name.
 Exit Code 32 or 33: Make sure you are not entering the name of a read-only file when asked for an output filename.
 */

#include <iostream>
#include <fstream>
#include <string>
#include <ctime>
#include <cctype>
using namespace std;

const string FILENAME = "contestants.txt";

class Contestant
{
private:
    static int num;
    string name;
    int panel, rounds, totalRounds, wins;
    bool fallen;
public:
    Contestant() {num++; name = ""; panel = num; rounds = 0; totalRounds = 0; wins = 0; fallen = false;};
    void setName(string n) {name = n;}
    void fall() {fallen = true;}
    void round() {rounds++; totalRounds++;};
    void win() {wins++;};
    void reset() {fallen = false; rounds = 0;};
    string getName() const {return name;};
    int getPanel() const {return panel;};
    int getRounds() const {return rounds;};
    int getTotalRounds() const {return totalRounds;};
    int getWins() const {return wins;};
    bool hasFallen() const {return fallen;};
    operator string() const {return name + " (panel " + to_string(panel) + (fallen ? ", fallen" : "") + ")";};
};
int Contestant::num = 0;

//Canonical implementation of overloaded stream insertion from cppreference.com
std::ostream& operator<<(std::ostream& os, const Contestant& obj)
{
    os << (string)obj;
    return os;
}

int main()
{
    //Read the contestant list from the file
    //The file should contain one contestant per line (NO BLANK LINE AT THE END)
    fstream fin(FILENAME, ios::in);
    if (!fin)
    {
        cout << "Error reading file " << FILENAME << endl;
        exit(1 << 4);
    }
    string name, nameList = "";
    int numConts = 0;
    while (!fin.eof())
    {
        getline(fin, name);
        nameList += name + "\n"; //delimiter between contestant names
        numConts++;
    }
    fin.close();
    if (numConts == 0)
    {
        cout << "No contestants found in " << FILENAME << endl;
        exit((1 << 4) + 1);
    }
    cout << "Successfully read " << numConts << " contestants.\n";

    //Construct the contestant array
    Contestant* conts = new Contestant[numConts];
    int c = 0;
    name = "";
    for (int i = 0; i < nameList.length(); i++) //read the name list one character at a time
    {
        if (nameList[i] == '\n') //delimiter
        {
            conts[c].setName(name);
            name = "";
            c++;
        }
        else
            name += nameList[i];
    }

    //Get the output filenane from the user
    string outFileName;
    cout << "Enter the name of the output files (no extension): ";
    getline(cin, outFileName);
    string reportFile = outFileName + ".txt";
    string csvFile = outFileName + ".csv";
    fstream reportOut(reportFile, ios::out);
    reportOut << "*** Panel Panic Report ***\n\n\n";
    if (!reportOut)
    {
        cout << "Error writing to file " << reportFile << endl;
        exit(2 << 4);
    }
    fstream csvOut(csvFile, ios::out);
    csvOut << "Game #,";
    if (!csvOut)
    {
        cout << "Error writing to file " << csvFile << endl;
        exit((2 << 4) + 1);
    }
    cout << "Successfully opened files for writing.\n";
    for (int i = 0; i < numConts; i++)
        csvOut << conts[i].getName() << (i == numConts - 1 ? "\n" : ",");

    //Get the number of games to play
    string inStr;
    int numGames = 0;
    bool validIn;
    do
    {
        cout << "Enter the number of games to play: ";
        getline(cin, inStr);
        validIn = true;
        for (int i = 0; i < inStr.length(); i++)
            if (!isdigit(inStr[i]))
                validIn = false;
        if (validIn)
        {
            numGames = stoi(inStr);
            validIn = numGames > 0;
        }
        if (!validIn)
            cout << "Please enter a positive integer value.\n";
    }
    while (!validIn);
    cout << "Playing " << numGames << " game(s).\n";

    //Play the games
    srand(time(0));
    int* rolls = new int[numConts];
    for (int g = 1; g <= numGames; g++)
    {
        reportOut << "=== Game " << g << " ===\n\n";
        csvOut << g << ",";
        for (int i = 0; i < numConts; i++)
            conts[i].reset();
        int contsLeft = numConts;
        int round = 0;
        while (contsLeft > 1)
        {
            round++;
            if (round > 1) //clear the previous round's rolls
                for (int i = 0; i < numConts; i++)
                    rolls[i] = -1;
            reportOut << "--- Round " << round << " ---\n";
            //Everyone who has not yet fallen rolls a die
            for (int i = 0; i < numConts; i++)
                if (!conts[i].hasFallen())
                    rolls[i] = rand() % contsLeft; //this value is an index (not the actual roll)
            //Convert the roll indices to actual rolls
            for (int i = 0; i < numConts; i++)
            {
                if (!conts[i].hasFallen())
                {
                    int nextIndex = 0;
                    for (int j = 0; j < numConts; j++)
                    {
                        if (rolls[j] >= 0)
                        {
                            if (rolls[i] == nextIndex)
                            {
                                rolls[i] = conts[j].getPanel();
                                break;
                            }
                            else
                                nextIndex++;
                        }
                    }
                    reportOut << conts[i] << " rolls a " << rolls[i] << ".\n";
                }
            }
            //Make contestants fall according to the rolls
            reportOut << "---\n";
            for (int i = 0; i < numConts; i++)
            {
                for (int j = 0; j < numConts; j++)
                {
                    if (conts[i].getPanel() == rolls[j])
                    {
                        conts[i].fall();
                        reportOut << conts[i].getName() << " has fallen.\n";
                        contsLeft--;
                        break;
                    }
                }
                if (!conts[i].hasFallen())
                    conts[i].round();
            }
            reportOut << endl;
        }
        //Print the game results
        reportOut << "--- Game Results ---\n";
        if (contsLeft == 0)
            reportOut << "The game has ended in a draw.\n";
        else
        {
            for (int i = 0; i < numConts; i++)
            {
                if (!conts[i].hasFallen())
                {
                    conts[i].win();
                    reportOut << conts[i].getName() << " has won!\n";
                }
            }
        }
        reportOut << endl;
        for (int i = 0; i < numConts; i++)
            csvOut << conts[i].getRounds() << (i == numConts - 1 ? "\n" : ",");
        cout << "Completed game " << g << " of " << numGames << ".\n";
    }

    //Print the final statistics
    reportOut << "=== Final Statistics ===\n";
    for (int i = 0; i < numConts; i++)
        reportOut << conts[i].getName() << " won " << conts[i].getWins() << " game(s) and survived " << conts[i].getTotalRounds() << " round(s).\n";
    csvOut << "Total,";
    for (int i = 0; i < numConts; i++)
        csvOut << conts[i].getTotalRounds() << (i == numConts - 1 ? "" : ",");

    //Cleanup
    reportOut.close();
    csvOut.close();
    cout << "You can find the game report in " << reportFile << " and the table of individual rounds survived in " << csvFile << ".\n";
    delete[] conts;
    delete[] rolls;
    return 0;
}