Daily Programming C++ 2

#include <iostream>
#include <fstream>
#include <algorithm>
#include <time.h>
#include <string>
#include <vector>

using namespace std;

/*
METHODS
*/
void createFile();
void readFile();
void getResults();
void printResults();
void getID();


/*
Variables
*/
const char possibleAnswers[] = "TFTFTFTF ";
const string answers = "TTFTFTFFTFTTFFFTTFTF";
vector <string> students;
vector <int> scores;

int main()
{
    createFile();
    readFile();
    getResults();
    printResults();
}


void createFile()
{

    ifstream file("scores.txt");



    if(file.good())
    {
    }
    else
    {
        ofstream file;
        file.open("scores.txt", ios::in | ios::app);

        string tAnswers;
        char numberOrLetter;

        int counter = 1;

        srand (time(NULL));

        for(int i = 0; i < 150; i++)
        {
            for (int i = 0; i < 8; i++)
            {
                numberOrLetter = rand() % 26 + 65;

                file << numberOrLetter;

                counter++;

            }


            file << " ";


            for(int i = 0; i < 20; i++)
            {
                tAnswers[i] = possibleAnswers[rand() % 9];
                file << tAnswers[i];
            }
            file << "\n";
        }



    }

}

void readFile()
{

    string line;
    ifstream file("scores.txt");


    if(file)
    {

        while(getline(file, line))
        {

            students.push_back(line);

        }
    }

}

void getResults()
{

    string found;
    string foundSubString;
    int score = 0;


    for(int i = 0; i < 150; i++)
    {
        found = students[i];

        foundSubString = found.substr (9,20);


        for(int x = 0; x < 20; x++)
        {

            if(foundSubString[x] == answers[x])
            {

                score += 2;

            }
            else if(found[x] != answers[x] && found[x] != ' ')
            {

                score -=1;

            } else if(found[x] = ' ') {

                //no score change
            }
        }


        scores.push_back(score);
        score = 0;
    }





}
void printResults()
{

    string student;
    string id;

    char grade;



    cout << "||--------------------------------------------------------------||" << endl;
    cout << "||---------------------------RESULTS----------------------------||" << endl;
    cout << "||                                                              ||" << endl;

    for(int i = 0; i < students.size(); i++)
    {

        student = students[i];
        id = student.substr(0, 8);

        if(scores[i] >= 35)
        {

            grade = 'A';

        }
        else if (scores[i] >= 30 && scores[i] < 35)
        {

            grade = 'B';

        }
        else if (scores[i] >= 25 && scores[i] < 30)
        {

            grade = 'C';

        }
        else if (scores[i] >= 20 && scores[i] < 25)
        {

            grade = 'D';

        }
        else if (scores[i] >= 15 && scores[i] < 20)
        {

            grade = 'E';

        }
        else
        {

            grade = 'F';

        }
        cout << "||\t Student ID: " << id << "\tScore: " << scores[i] << "\tGrade: " << grade << "\t||" <<endl;

    }

    cout << "||--------------------------------------------------------------||" << endl;


}