#include <iostream>
using namespace std;

int main()
{
	float numberOfPrices;
	float sumInEuros;
	char answer;

	float processAPrice(float);
	void displayFinalData(float&, float);

	numberOfPrices = 0;
	sumInEuros = 0;
	answer = 'Y';

	while ((answer = 'Y') || (answer = 'y')) {
		processAPrice(sumInEuros);
		numberOfPrices = numberOfPrices + 1;
		cout << ("Continue (Y/N)?\n");
		cin >> answer;
	}
	if (numberOfPrices > 0)
		displayFinalData(sumInEuros, numberOfPrices);
	return(0);
}

float processAPrice()
{
	float priceInPounds;
	float priceInEuros;

	float getPriceInPounds(float);
	float convertPriceInEuros(float);
	float showPriceInEuros(float, float);
	float calculateSum(float&, float);

	priceInPounds = getPriceInPounds(priceInPounds);
	convertPriceInEuros(priceInPounds);
	sumInEuros = showPriceInEuros(priceInPounds, priceInEuros);
	calculateSum(sumInEuros, numberOfPrices);

	return;
}


float getPriceInPounds(float priceInPounds)
{
	cout << ("Enter a price (in pounds): £ \n");
	cin >> priceInPounds;
	return priceInPounds;
}


float convertPriceIntoEuros(float priceInPounds, float priceInEuros)
{
	const float conversionRate = 0.82f;
	priceInEuros = priceInPounds / conversionRate;
	return priceInEuros;
}


void showPriceInEuros(float priceInPounds, float priceInEuros)
{
	cout << ("The euro value of £") << priceInPounds << ("is €") << priceInEuros;
}


float calculateSum(float& sumInEuros, float priceInEuros)
{
	sumInEuros = sumInEuros + priceInEuros;
	return sumInEuros;
}

void displayFinalData(float& sumInEuros, float numberOfPrices)
{
	cout << ("The total sum is: ") << sumInEuros << ("€");
	cout << ("The average is: ") << (sumInEuros / numberOfPrices);
}