Log System

#include <cstdlib>
#include <vector>
#include <iostream>
#include <fstream>
#include <string>
#include <stdio.h>
#include "functions.h"


using namespace std;

const int SIZE = 100;   // Always use MORE than required
string Usernames[SIZE]; // From the database
string Password[SIZE];  // From the database

int GetNameIndex(string query, int size)
{
    for (int i=0; i<size; i++) //Prevents the program from reading garbage
    {
        if (query == Usernames[i]) return i; //Return the index
    }
    return -1; //Error code
}
bool PasswordMatches(int index, string passwd)
{
    return (passwd == Password[index]);
}



int main(int argc, char** argv) {
    initUserCheck(); // Checks to make sure that a user is registered, if not creates a new one.

    //Starts the Login Process.
    //Read the database:

        const char *appdata = std::getenv ( "APPDATA" );
        std::string path = appdata;
        path += "\\myprogram\\files\\database.dtbf";
        std::ifstream fin ( path.c_str() );

    int i=0;

    while (!fin.eof()){
        fin >> Usernames[i] >> Password[i];
        i++; //This represents the number of lines we could extract from the database
    }

        //Begin VISUAL login
        RetryLogin:
    string usrname, passwd;
    printf("Username: ");
    cin >> usrname;

    int index = GetNameIndex(usrname, i); //Send the database size to this function.

    printf("Password: ");
    cin >> passwd;

    if (!PasswordMatches(index, passwd)){ // If Password+Username doesn't match.

            printf("Correct Username, incorrect Password.  Please try again.  \n");
            system("PAUSE");
            goto RetryLogin;
    }

    fin.close();
    printf("You have successfully logged in.\n\n");