Advanced Topics 15. Extract URLs from Text

// Write a program that extracts and prints all URLs from given text.

namespace _15.ExtractURLsFromText
{
    using System;

    public class ExtractURLsFromText
    {
        public static void Main(string[] args)
        {
            checked
            {
                Console.WriteLine("Enter your Text on single line!");
                string inputText = Console.ReadLine();

                char[] separators = new char[] { ' ', ',', ';' };
                string[] text = inputText.Split(separators, StringSplitOptions.RemoveEmptyEntries);
                if (text.Length > 0)
                {
                    Console.WriteLine("The URLs in Given Text are:");
                    for (int i = 0; i < text.Length; i++)
                    {
                        string word = text[i];
                        bool isWebSite = word.Contains("http://") || word.Contains("www.");
                        if (isWebSite)
                        {
                            Console.WriteLine(word);
                        }
                    }
                }
                else
                {
                    Console.WriteLine("Error! - Invalid Input!!!");
                }
            }
        }
    }
}