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CSharp · Console

/Program.cs

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
    }
}