// This program calls 3 functions: the 1st one has the user enter an ID and 3 test scores which range from 0-50 and checks to see
// if done correctly, if not then it asks the user again, the 2nd one takes the 3 test scores from the 1st function and then finds
// the average, and the 3rd one accepts the average and id and prints the id followed by a line of stars based on the
// whole # part of the average. The user can also repeat this as many times as they want.
 
#include "stdafx.h"
#include <iostream>
using namespace std;
 
void getIdScores(int &id, int &score1, int &score2, int &score3);
int calcAverage(int score1, int score2, int score3);
void printStars(int avg, int id);
 
int main()
{
	// declare variables
	int id, score1, score2, score3;
 
	// call function getIdScores
	getIdScores(id, score1, score2, score3);
 
	// call function calcAverage
	int calcAverage(int score1, int score2, int score3);
 
	// call function printStars
	void printStars(int avg, int id);
 
	return 0;
}
 
void getIdScores(int &id, int &score1, int &score2, int &score3)
{
	// loop if test scores are invalid
    while (true)
    {
	// get id #
	cout << "Please enter your ID#: ";
	cin >> id;
 
        // get 3 test scores
        cout << "Please enter 3 test scores (separated by spaces & b/w 0-50): ";
        cin >> score1 >> score2 >> score3;
 
        // test if it is in the right format
        if ((score1 > 0 && score1 < 50) ||(score2 > 0 && score2 < 50) || (score3 > 0 && score3 < 50)) break;
	cout << "Invalid test scores. Please try again." << endl;
    } // while
} // getIdScores
 
int calcAverage(int score1, int score2, int score3)
{
        // find average
	int avg = (score1 + score2 + score3) / 3;
 
	return avg;
} // average
 
void printStars(int avg, int id)
{
	// print id to screen
    cout << "The id is " << id;
 
	// loop to print out the number of stars of the average
	for (int i=0; i<avg; i++)
    {
		cout << "*";
    } // for
} // printStars

// call function calcAverage
int calcAverage(int score1, int score2, int score3);
 
// call function printStars
void printStars(int avg, int id);

calcAverage(score1, score2, score3);

 int avg = calcAverage(int score1, int score2, int score3); 
//return value from this function is copied into the avg variable..