using System;

namespace PS2_Q1
{
	//
	// Problem Set 2, Question 1
	// Written by Paul Hudak
	// Sept 25, 2006
	//
	class Class1
	{
		//
		// Program Design Exercise 11 in Chapter 3
		//
		[STAThread]
		static void Main(string[] args)
		{
			// get costs of food items from user
			double cerealA = GetPrice("box of cereal","A");
			double milkA   = GetPrice("quart of milk","A");
			double cerealB = GetPrice("box of cereal","B");
			double milkB   = GetPrice("quart of milk","B");

			// compute total costs for each store
			double costA = 3*cerealA + 2*milkA;
			double costB = 3*cerealB + 2*milkB;

			// display total cost of cheapest store
			if (costA <= costB)
				OutputResult("A",costA);
			else
				OutputResult("B",costB);
		}

		public static double GetPrice(string food, string store)
		{
			Console.Write("What is the price of a {0} at store {1}? ", food, store);
			return double.Parse(Console.ReadLine());
		}

		public static void OutputResult(string store, double cost)
		{
			Console.WriteLine("\nStore {0} is the least expensive: {1:C} total.\n", store, cost);
		}
	}
}