using System;
using System.Linq;
using System.Collections.Generic;

class LinqExercise12
{
    static void Main(string[] args)
    {
        Console.Write("\nLINQ : Find the uppercase words in a string : ");
        Console.Write("\n----------------------------------------------\n");
        string strNew;
        Console.Write("Input the string : ");
        strNew= Console.ReadLine();
        var ucWord = WordFilt(strNew);
        Console.Write("\nThe UPPER CASE words are :\n ");
        foreach (string strRet in ucWord)
            {
                Console.WriteLine(strRet);
            }
        Console.ReadLine();
    }

    static IEnumerable<string> WordFilt(string mystr)
    {
        var upWord =  mystr.Split(' ')
                      .Where(x => String.Equals(x, x.ToUpper(),
                                                StringComparison.Ordinal));
        return upWord;
    }
}