using System;
public class Program
{
public static void Main()
/*/#1
Console.WriteLine("Do you want to go to lunch?:");
string strUserResponse = Console.ReadLine();
strUserResponse = strUserResponse.ToLower();
Console.WriteLine(strUserResponse);
strUserResponse = strUserResponse.Replace("no","yes");
*/
/*/#2
string strPhone = "801-123-4567";
String[] strArray;
strArray = strPhone.Split('-');
Console.WriteLine(strArray [0]);
Console.WriteLine(strArray [1]);
Console.WriteLine(strArray [2]);
//#3
Console.WriteLine("Enter first word: ");
string str1 = Console.ReadLine();
Console.WriteLine("Enter second word; ");
string str2 = Console.ReadLine();
str1 = str1.Trim();
str2 = str2.Trim();
str1 = str1.ToLower();
str2 = str2.ToLower();
Console.WriteLine(str1);
Console.WriteLine(str2);
}