Password

// Increasing Passwords.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <string>

using namespace std;

void waitLine()
{
    cin.clear();
    cin.ignore(255, '\n');
    cin.get();
}

//Logic for increasing a base 36 number
void incrChar(string &Password, int curChar)
{
    curChar--;
    if (Password[curChar] == 32)
    {
        Password[curChar] = char(65);
    }
    else if (((Password[curChar] > 64) && (Password[curChar] < 90)) || ((Password[curChar] > 47) && (Password[curChar] < 57)))
    {
        Password[curChar]++;
    }
    else if (Password[curChar] == 90)
    {
        Password[curChar] = 48;
    }
    else
    {
        Password[curChar] = 'A';
        incrChar(Password, curChar);
    }

}

//Check for alphebetisation and repeats
bool isValid(string Password)
{
    bool r = true;
    for (int i=0; i<36; i++)
    {
        if (!(Password[i]==char(32)))
        {
            for (int j=i+1; j<36; j++)
            {
                if (Password[i]>char(64))
                {
                    if (Password[j]<=Password[i] && Password[j]>64)
                    {
                        r = false;
                    }
                }
                else
                {
                    if (Password[j]<=Password[i] || Password[j]>64)
                    {
                        r = false;
                    }
                }
            }
        }
    }
    return r;
}

string nthPassword(int n)
{
    string Password = "                                    ";
    do
    {
        incrChar(Password, 36);
        if (isValid(Password))
        {
            n--;
        }
    } while (n>0);
    return Password;
}


int main()
{
    int n;
    cin >> n;
    cout << nthPassword(n);
    waitLine();
    return 0;
}