Reverse Strings [C#]

using System;
using System.Collections.Generic;

namespace ReverseStrings
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();

            Stack<string> reversed = new Stack<string>();

            for (int i = 0; i < input.Length; i++)
            {
                reversed.Push(String.Format($"{input[i]}"));
            }

            Console.WriteLine(String.Join("", reversed));
        }
    }
}