#include <iostream>
#include <vector>
#include <algorithm>
#include <numeric>

using namespace std;


/*
    Name: Cameron Alston
    Section: CISP 400 - Wei
    Title: Test Score Calculator w/ Vectors!!
    SCR:    9/10/07     Began Coding                Alston
            9/20/07     Added vector functions      Alston
			9/21/07		Fixed sort and reverse		Alston
*/


#define TRUE 1
#define FALSE 0
#define MAX 9
#define REPORTHEADING "\n\nTest Scores\n-----------"
#define AVERAGEHEADING "\nAverage Score\n-------------"


void EnterScores(int &numTests, vector<int> &testScores, int count);
float AverageScores(vector<int> &testScores, int numTests, int count);
void ShowScores(vector<int> &testScores, int numTests, float averageScore, int count);


int main()
{
    int numTests = 0,
        count = 0,
        pause = 0;
    vector<int> testScores;
    float averageScore = 0;

    EnterScores(numTests, testScores, count);
	
	sort(testScores.begin(), testScores.end());
	reverse(testScores.begin(), testScores.end());
	
	averageScore = AverageScores(testScores, numTests, count);
    
	ShowScores(testScores, numTests, averageScore, count);

    cin >> pause;

    return 0;
}

void EnterScores(int &numTests, vector<int> &testScores, int count)
{
    int tempTest = 0;
	
	cout << "How many test scores are there? ";
    cin >> numTests;

    while(numTests >= MAX + 1 || numTests < 1)
    {
        cout << endl << "Bad input..." << endl;
        cout << "How many test scores are there? ";
        cin >> numTests;
    }
    
	for(count = 0; count < numTests; count++)
    {
        cout << endl << "Enter the score for test #" << count + 1 << " ";
        cin >> tempTest;
		testScores.push_back(tempTest);

        if(testScores[count] < 0)
        {
            cout << endl << "That's an invalid score..." << endl;
            cout << endl << "Enter the score for test #" << count + 1 << " ";
            cin >> tempTest;
			testScores.push_back(tempTest);
        }

		fflush(stdin);
    }
}

float AverageScores(vector<int> &testScores, int numTests, int count)
{
    int totalScores = 0; 
    float averageScore = 0;

    totalScores = accumulate(testScores.begin(), testScores.end(), 0);

    averageScore = (float)totalScores / (float)numTests;

    return averageScore;
}   

void ShowScores(vector<int> &testScores, int numTests, float averageScore, int count)
{
    cout << REPORTHEADING << endl;

    for(count = 0; count < numTests; count++)
    {
        cout << testScores[count] << endl;
    }

    cout << endl << AVERAGEHEADING << endl << averageScore;
}