using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {               

        //Dictionary's are collections of a key/value pairs - just strongly typed. They can be of any type(int, string, bool, custom, etc).

                    //////////////////////////////////////

                    ////How to make a dictionary in C#///

                    ////////////////////////////////////

            //makes a dictionary named 'toysSold' and adds key value pairs at the sane time, you can also make an empty dictionary and use nameOfDictionary.Add(Key, Value)

            Dictionary<string, int> toysSold = new Dictionary<string, int>() {

                    {"Hot Wheels", 344},

                    {"Legos", 763},

                    {"Gaming Consoles", 551},

                    {"Board Games", 298}

                };

                    //////////////////////////////////////////////////////////////////////////////////////////

                    ////how to use .Add(Key, Value) to add KeyValuePairs to the dictionary named "toysSold"///

                    //////////////////////////////////////////////////////////////////////////////////////////

                    //  "GI Joe" = Key   and   430 = Value || together they make a KeyValuePair

                    toysSold.Add("GI Joe", 430);

                    //access and print this newly added Value(430) to the console by using the key of "GI Joe"

                    Console.WriteLine(toysSold["GI Joe"]);

                    ////////////////////////////////////////////////////////////////////////

                    ////How to loop over the dictionary and print each toy & its price/////

                    ///////////////////////////////////////////////////////////////////////

                    Console.WriteLine("****toysSold Dictionary****");//title of list you are about to print

                    foreach (KeyValuePair<string, int> word in toysSold)

                    {

                        Console.WriteLine($"{word.Key} price ${word.Value}");

                    }

                    //now lets make anither Dictionary that contains your top 5 video games, rank 1-5 would be of type 'int', and the name of the game would be type 'string'       

                    ////////////////////////////////////////////

                    ////How to make an empty dictionary in C#///

                    ////////////////////////////////////////////

                    Dictionary<int, string> top5VideoGames = new Dictionary<int, string>();

                    //now we have an empty dictionary called 'top5VideoGames, lets add some games with .Add() instead of using {key, value} after creating te Dictionary like the first dictionary we created      

                    top5VideoGames.Add(1,"HL2DM");

                    top5VideoGames.Add(2, "Diablo 2");

                    top5VideoGames.Add(3, "Halo 2");

                    top5VideoGames.Add(4, "World of Warcraft, vanilla");

                    top5VideoGames.Add(5, "Starcraft Broodwars");

                    //Now lets loop over the dictionary and print each key value pair to the Console

                    //First lets print a title to the console

                    Console.WriteLine("****Top 5 Video Games of all Time****");

                    //loop over Dictionary and print each one

                    foreach(KeyValuePair<int, string> game in top5VideoGames)

                    {   

                        Console.WriteLine(game.Key + " " + game.Value);

                    }

                    //how to check if an int(key) is in the dictionary -- here we check if the Dictionary has a key of 3

                    Console.WriteLine("***How to check if a certain key exists in a dictionary with an if-else statement***");

                            //create an empty variable

                            string value;

                    if (top5VideoGames.ContainsKey(3))

                    {

                        value = top5VideoGames[3];

                        Console.WriteLine($"{value} exists in the dictionary");

                    }

                    else

                    {

                        Console.WriteLine("Key Not Present");

                        return;

                    }

    }

}