[Doom C++] - Config manager

#include <iostream>
#include <windows.h>
#include <fstream>
#include <conio.h>

using namespace std;

bool noconfig = true;
bool nostart = false;

bool isFile (string file)
{
    return std::ifstream( (char*) &file[0] );
}

int strRename(string oldn, string newn)
{
    return rename( (char*) &oldn[0], (char*) &newn[0]);
}

bool isConfigSetup(string path)
{
    return isFile(path + "/gzdoom-" + getenv("USERNAME") + ".ini");
}

bool SetupConfig(string cPath)
{
    if(!isFile(cPath)) return 0;
    char* pName = getenv("USERNAME");
    string nPath = "Game/gzdoom-" + (string)pName + ".ini";
    strRename( cPath, nPath );
    return 1;
}


bool yesno()
{
    cout << "Y/n ?" << endl;
    bool waiting = true;
    bool yes = false;
    while (waiting)
    {
            getch();
            if(GetAsyncKeyState('Y') || GetAsyncKeyState('y'))
            {
                waiting = false;
                yes = true;
                break;
            }
            else if(GetAsyncKeyState('N') || GetAsyncKeyState('n'))
            {
                waiting = false;
                break;
            }
    }

    return yes;

}

bool checkConfigName(string name)
{
 if(isFile("Game/gzdoom-" + name + ".ini"))
    {
        cout << "Config found, reset to logged in user?" << endl;
        if(yesno())
        {
            if(!SetupConfig("Game/gzdoom-" + name + ".ini"))
            {
                cout << "Failed. " << endl;
                return 0;
            }
            cout << "Success!" << endl;
            return 1;
        }

    }
    else
    {
        cout << "Config by name: " << "Game/gzdoom-" << name << ".ini" << " not found." << endl;
        return 0;
    }
}

bool ManualConfig()
{
    string mPath;
    cout << "Please find your config in [Game/gzdoom-[name].ini]: ";
    cin >> mPath;

    return checkConfigName(mPath);
}

bool AskConfig()
{
        cout << "Would you like to manually enter a Config name" << endl;
        if(yesno() == true)
        {
            if (!ManualConfig())
            {
                return AskConfig();
            }
                cout << "Starting Reveil..." << endl;
                return 1;
        }
        else
        {
            if(noconfig)
            {
                cout << "A config wasnt found.. attempt to start?" << endl;
                if(!yesno())
                {
                    nostart=true;
                    return 0;
                }
            }

                cout << "Attempting to start with fresh config..." << endl;
                return 1;
        }


}

bool DetectConfig(string path)
{
    char* pName = getenv("USERNAME");
    cout << "Detected: " << pName << endl;
    cout << "Preparing config for " << pName << endl;
    string nPath;
    if(isFile( path + "/gzdoom-NAME.ini" ))
    {
        nPath = path + "/gzdoom-" + (string)pName + ".ini";
        strRename(path + "/gzdoom-NAME.ini", nPath );
        noconfig = false;
        return 1;
    }
    else if(!isConfigSetup("Game/"))
    {
        cout << "Config missing." << endl;
        AskConfig();
        return 1;
    }
}

int main()
{
    char* pName;
    cout << "Starting GZDoom with Reveil.. " << endl;
    cout << "Preparing config.. " << endl;

    if( DetectConfig("Game") )
    {
        if(!nostart) WinExec("Game/gzdoom.exe -file Game/ReveilBundle.pk3 -file jenesis.wad",SW_NORMAL);
    }
    return 0;
}