#include <string>
#include <fstream>
#include <iostream>
using namespace std;

int main()
{


	ifstream infile;
	ofstream outfile;  //output file stream variable

	infile.open("GradeResults.txt");

	if (!infile)
	   {
		   cout <<"Cannot open input file." <<endl;
		   return 1;
	   }

	cin >> student.Firstname >> student.LastName;
	cin >> student.testscore
	

	if (score >= 90)
		newStudent.courseGrade = 'A';
	else if (score >= 80)
			newStudent.courseGrade = 'B';
	else if (score >= 70)
			newStudent.courseGrade = 'C';
	else if (score >= 60)
			newStudent.courseGrade = 'D';
	else
		newStudent.courseGrade = 'F';

	void bubbleSort ( int list [], int length);

	int main ()
	{
		int list[] = {

//This program reads in  twenty student's names and grades, calculates a letter grade  and returns the 
//student with the highest score.

//Header Files
#include "stdafx.h"
#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>

using namespace std;

// Declares Struct variable
struct studentType
{
	string studentFName;//Stores the student's first name
	string studentLName;//Stores the student's last name
	int testscore;//stores the test score
	char grade;//stores letter grade
};

studentType students[19];//initializes an array called students of the type studentType

//Declare functions

void GetData(ifstream& infile, studentType students[]);
void AssignGrade(ifstream& infile, studentType students[]);
int Highestscore(ifstream& infile, studentType students[]);
void PrintNames(ofstream&outfile, studentType students[]);
void bubblesort(ifstream& infile, studentType students[]);

int main(int argc, char* argv[])
{

	cout<< "This program reads in students' names followed by their test scores.  It will print"<<
		" the names and the highest test scores." << endl;
	ifstream infile;
	ofstream outfile;

	infile.open("Ch11_Ex1Data.txt");

	if (!infile)
	{
		cout << "Cannot open the input file." << endl;
		return 1;
	}
	outfile.open("Ch11_Ex1Results.txt");

	GetData(infile, students);
	AssignGrade(infile, students);
	Highestscore(infile, students);
	PrintNames(outfile, students);
	
	infile.close();
	outfile.close();

	return 0;
}


//Functions
void GetData(ifstream& infile, studentType students[])//This function reads in the data
{ 
	int index;
	for (index = 0; index <= 19; index++)
	{
		infile >> students[index].studentFName;
		infile >> students[index].studentLName;
		infile >> students[index].testscore;
	}
}

void AssignGrade(ifstream& infile, studentType students[])//This function assigns a letter grade to the grade
{
	int score;
	int index;
	for (index = 0; index <= 19; index++)
	{
	
	infile >> students[index].testscore;
	score = students[index].testscore;
	if (score >= 90)
		students[index].grade = 'A';
	else if (score >= 80)
		students[index].grade = 'B';
	else if (score >= 70)
		students[index].grade = 'C';
	else if (score >= 60)
		students[index].grade = 'D';
	else
		students[index].grade = 'F';
	}


}

int Highestscore(ifstream& infile, studentType students[])// This function outputs the highest grade
{
	int index;
	for (index = 0; index <= 19; index++)
	{
	infile >> students[index].testscore;
	bubblesort(infile, students);
	return students[index].testscore;
	}
}

void bubblesort(ifstream& infile, studentType students[])
{
	int temp;
	int counter, index;
	int length;
	length = 21;

  for (counter = 0; counter < length - 1; counter++ )
  {
	  for (index = 0; index < length - 1 - counter; index++)
		  if (students[index].testscore > students[index + 1].testscore)
		  {
			  temp = students[index].testscore;
			  students[index].testscore = students[index + 1].testscore;
			  students[index + 1].testscore = temp;
		  }

}
}

void PrintNames(ofstream& outfile, studentType students[])
{
int index;
for (index = 0; index < 20; index++)
{
outfile << left << students[index].studentLName << ", " << left << students[index].studentFName <<" "<<students[index].grade <<" "<< students[index].testscore << endl;
}
}