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how do i make max/min/average score in this code?

felix summoner (6)
hello

so i have this project to grade several multiple choice exams. i have done so far the following. just need to output to the data file (besides the id and score percentage) statistics of maximum score, minimum score, and average score. how do i do that?

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

using namespace std;

int openfiles(ifstream& infile, ofstream& outfile);

void Size(ofstream&, int, string);

int main()
{
	int num_student = 4, count, length, score2, w[6];

	ifstream infile, curvingfile; char x;

	ofstream outfile; float score;

	string  key, answer, id;

	do {
		openfiles(infile, outfile);  // function calling

		infile >> key; // answer key

		for (int i = 0; i < num_student; i++) // loop over each student

		{
			infile >> id;

			infile >> answer;

			count = 0;

			length = key.size(); // length represents number of questions in exam from exam1.dat
								 // size is a string function....
			
			Size (outfile, length, answer);

			for (int j = 0; j < length; j++) // loop over each question
			{
				if (key[j] == answer[j])

					count++;
			}

			score = (float) count / length; 

			score2 = (int)(score * 100);

			outfile << id << "     " << score2 << "%";

			if (score2 >= 90)//<-----w[0]

				outfile << "A" << endl;

			else if (score2 >= 80)//<-----w[1]

				outfile << "B" << endl;

			else if (score2 >= 70)//<-----w[2]

				outfile << "C" << endl;

			else if (score2 >= 60)//<-----w[3]

				outfile << "D" << endl;

			else if (score2 >= 50)//<-----w[4]

				outfile << "E" << endl;

			else if (score2 < 50)//<-----w[5]

				outfile << "F" << endl;
		}
		cout << "Would you like to attempt a new trial? (y/n): ";

		cin >> x;
	
	} while (x == 'y' || x == 'Y');

	return 0;
}

int openfiles(ifstream& infile, ofstream& outfile)
{
	string name1, name2, name3, answerstring, curvedata;

	cin >> name1; name2; name3;
	if (name1 == "exit" || name2 == "exit" || name3 == "exit" ) return false;
	 
	cout << "Input the name for the exam file: ";

	cin >> name1;

	infile.open(name1.c_str());

	infile >> answerstring;

	cout << "Input the name for the curving file: ";

	cin >> name2;

	infile.open(name2.c_str());

	infile >> curvedata;

	cout << "Input the name for the output: ";

	cin >> name3;

	outfile.open(name3.c_str());

	return true;
}

void Size(ofstream& outfile, int length, string answer)

{
	bool check;// extra answers, lesser answers...

	if (answer.size() > length)

	{
		outfile << "Unnecessary extra answers";
	}

	else if (answer.size() < length)

	{
		outfile << "The remaining answers are incorrect";
	}

	else { check = false; };
}
felix summoner (6)
anyone?
SIK (309)
to find the max score you follow the pattern:

set max_score to a very low integer value.

iterate through array with for loop.

at each pass check if array element indexed by loop is greater than max.

if so set max_score to this element.

at end of iteration you should have the maximum.

minimum is same but is reverse.

to find average score you should iterate through array via for loop and sum all elements. thereafter divide sum by number of elements (6 in your case) and that will be the average.

when dividing make sure to cast to double or float so as to preserve the fractional part of value.
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