#include <iostream>

// Paul Taylor CS200 program

const double lpg = 0.264179;
	// lpg = liter per gallon

void main()
{
	using namespace std;

	char choice;

	do
	{
		using namespace std;
		double mpg_calc(double, double);
		// provide liters used then miles traveled & function returns a double that represents the mpg
		double liters, gasoline;

		cout << "Would you like to run a program to read in # of liters\n"
			<< "consumed by your car & # of miles traveled by your car to get\n"
			<< "miles per gallon the car delivered? Enter Y for yes or N for no\n"
			<< "& press Enter.\n";
		cin >> choice;

		if (choice == 'Y' || choice == 'y')
		{
			cout << "Enter total # of liters your car has consumed at last fill up & press Enter\n";
			cin >> liters;
			cout << "Enter total # of miles traveled by your car since last fill up & press Enter\n";
			cin >> gasoline;
			cout << "Your car achieved " << mpg_calc(liters, gasoline) << " miles per gallon since last fill up.\n\n";
		}
		
		else
			cout << "Thank you & bye bye.\n";

	}
	while (choice == 'Y' || choice == 'y');
}

double mpg_calc(double l, double m)
{
	return (m / ( l * lpg ));
}

/*
Would you like to run a program to read in # of liters
consumed by your car & # of miles traveled by your car to get
miles per gallon the car delivered? Enter Y for yes or N for no
& press Enter.
y
Enter total # of liters your car has consumed at last fill up & press Enter
4
Enter total # of miles traveled by your car since last fill up & press Enter
1
Your car achieved 0.946328 miles per gallon since last fill up.

Would you like to run a program to read in # of liters
consumed by your car & # of miles traveled by your car to get
miles per gallon the car delivered? Enter Y for yes or N for no
& press Enter.
y
Enter total # of liters your car has consumed at last fill up & press Enter
40
Enter total # of miles traveled by your car since last fill up & press Enter
200
Your car achieved 18.9266 miles per gallon since last fill up.

Would you like to run a program to read in # of liters
consumed by your car & # of miles traveled by your car to get
miles per gallon the car delivered? Enter Y for yes or N for no
& press Enter.
y
Enter total # of liters your car has consumed at last fill up & press Enter
52
Enter total # of miles traveled by your car since last fill up & press Enter
250
Your car achieved 18.1986 miles per gallon since last fill up.

Would you like to run a program to read in # of liters
consumed by your car & # of miles traveled by your car to get
miles per gallon the car delivered? Enter Y for yes or N for no
& press Enter.
n
Thank you & bye bye.
Press any key to continue . . .
*/