using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        Dictionary<CardValue, int> dict1 = new();

        foreach(CardValue x in Enum.GetValues(typeof(CardValue)))

            dict1.Add(x, 0);

​

        Console.WriteLine($"dict1: {String.Join(", ", dict1)}");

​

        Dictionary<CardValue, int> dict2 = Enum.GetValues(typeof(CardValue))

            .Cast<CardValue>()

            .ToDictionary(x => x, x => 0);

​

        Console.WriteLine($"dict2: {String.Join(", ", dict2)}");

    }

​

    public enum CardValue

    {

        Ace = 1,

        Two = 2,

        Three = 3,

        Four = 4,

        Five = 5,

        Six = 6,

        Seven = 7,

        Eight = 8,

        Nine = 9,

        Ten = 10,

        Jack = 11,

        Queen = 12,

        King = 13

    }

}