Write a program to reverse a word using stack

For example

Input:
We United

Output:
eW detinU

Solution

using System;
using System.Collections.Generic;

namespace StackOperation
{
    class Program
    {
        public static void Main()
        {
            Console.WriteLine("Enter a string");
            var str = Console.ReadLine();
            Console.WriteLine("Reverse of given string");
            ReverseWords(str);
            Console.ReadLine();
        }

        public static void ReverseWords(string str)
        {
            var st = new Stack<char>();

            foreach (var t in str)
            {
                if (t != ' ')
                {
                    st.Push(t);
                }
                else
                {
                    while (st.Count > 0)
                    {
                        Console.Write(st.Pop());

                    }
                    Console.Write(" ");
                }
            }

            while (st.Count > 0)
            {
                Console.Write(st.Pop());
            }
        }
    }
}