Student CPP

#include "Student.h"
#include <iostream>
#include <fstream>
#include <ctime>
#include <Windows.h>
using namespace std;

Students::Students(){
    keyNumber=0;
    grade=0;
    studentNumber=0;
    //Seed Random Function
    srand(time(NULL));
    //Has student randomly guess questions
        for(int i=0;i<100;i++)
        {
            answers[i]=rand()%5;

        }
}

void Students::getVersion(int studentNumber)
{
    //Sets the keyNumber for the student to determine what test it will be checked against
    keyNumber=studentNumber%4;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////
void Students::checkAnswers(int a[100][2]){
    //Variable to hold the test answers
    int theKey[100][2];

    for(int i=0;i<100;i++)
        {
            theKey[i][0] = a[i][0];
            theKey[i][1] = a[i][1];
        }

    //checks students answers to key
    for(int i=0;i<100;i++)
    {
        if(answers[i]==theKey[i][0]||answers[i]==theKey[i][1])
        {
            totalCorrect[i]=1;
        }
        else
        {
            totalCorrect[i]=0;
        }
    }

}
////////////////////////////////////////////////////////////////////////////////////////////////////////
void Students::checkGrade()
{
    //Calculates the students correct answers
    for(int a=0;a<100;a++)
    {
        grade = grade + totalCorrect[a];
    }
        //cout<<grade<<endl;


}
////////////////////////////////////////////////////////////////////////////////////////////////////////
void Students::returnAnswers(int pubAnswers[]){
    //Used to return the students answers so that the main function and access them
    for(int i=0;i<100;i++)
    {
        pubAnswers[i]=answers[i];
    }
}
void Students::printGrades(int pubAnswers[]){
    ofstream output;
    output.open("Grades.txt");
    for(int i=0;i<100;i++)
    {
        if(-1>grade<70)
        {
            output<<"Student "<<i<<"'s Grade is a A"<<endl;
        }
        if(69>grade<75)
        {
            output<<"Student "<<i<<"'s Grade is a D"<<endl;
        }
        if(74>grade<80)
        {
            output<<"Student "<<i<<"'s Grade is a C"<<endl;
        }
        if(79>grade<90)
        {
            output<<"Student "<<i<<"'s Grade is an "<<endl;
        }
        if(89>grade<101)
        {
            output<<"Student "<<i<<"'s Grade is an A"<<endl;
        }
    }

    output.close();
}
////////////////////////////////////////////////////////////////////////////////////////////////////////
int Students::getSN(){
    return keyNumber;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////
void Students::getCorrect(int pubAnswers[100]){
    for(int i=0;i<100;i++)
        pubAnswers[i] = totalCorrect[i];

}
///////////////////////////////////////////////////////////////////////////////////////////////////////////
int Students::getGrade(){
return grade;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////
void Students::StudentWrite(int a){
    int b = a;
    ofstream output;
    switch(b){
    case 0:
        output.open("Student 1.txt");
        break;
    case 1:
        output.open("Student 2.txt");
        break;
    case 2:
        output.open("Student 3.txt");
        break;
    case 3:
        output.open("Student 4.txt");
        break;
    }
    for(int i=0;i<100;i++)
    {
        output<<totalCorrect[i]<<"  "<<grade<<endl;

    }
    output.close();

    cout<<"done"<<endl;
}