using System;

using System.Linq;

using System.Collections.Generic;

using System.Globalization;

public static class String

{

    public static string CapitalizeFirstLetters(this string sentence)

    {

        string changedText = new CultureInfo("en-US", false).TextInfo.ToTitleCase(sentence);

        return changedText;

    }

}

​

public class Program

{

    public static void Main()

    {

        string text = "mirrorS arE morE fuN thaN televisioN";

        string changedText = text.CapitalizeFirstLetters();

        Console.WriteLine(changedText);

    }

}

​

/*Write an extension method for the class String that capitalizes all

letters, which are the beginning of a word in a sentence in English. For

example: "this iS a Sample sentence." should be converted to "This

Is A Sample Sentence.".*/