using System;

//This program will go through a range of daily closing share prices and output the total loss and gains encountered.

//Author: JJ

//Created: 12 November 2018

public class SharePriceProgram

{

    //Daily closing share price

    private static double[] closingSharePrices = new double[] {

        78.41,

        85.18,

        91.09,

        90.57,

        91.02,

        103.61,

        105.88,

        103.77,

        110.13,

        108.89,

        105.09

    };

​

    private static double yesterdayPrice = closingSharePrices[0];//Initialise yesterdays (last price/closing) price to be identical to current price so that difference is 0.

    private static double totalLosses = 0;//Hold total losses across range

    private static double totalGains = 0;//Hold total gains across range

    public static void Main()

    {

        foreach(double currentPrice in closingSharePrices)

        {

            //Informative debug layout. Also useful for day-to-day change calculations for future.

            Console.WriteLine("YesterdayClose: " + yesterdayPrice + " TodayClose: " + currentPrice + " Change: " + (currentPrice-yesterdayPrice));

            if(yesterdayPrice > currentPrice)

                totalLosses += (yesterdayPrice-currentPrice);// Yesterdays price was bigger, thus we have a loss.

            else if(currentPrice > yesterdayPrice)

                totalGains += (currentPrice-yesterdayPrice);// Todays price is bigger, thus we have a gain.

            //Set yesterdays price to todays, for next iteration of loop.

            yesterdayPrice = currentPrice;

        }

        Console.WriteLine("-------------------------");

        Console.WriteLine("Total Gains: " + totalGains);

        Console.WriteLine("Total Losses: " + totalLosses);

    }

}