using System;
class Program
{
static void Main()
{
Console.WriteLine("Please enter your first name");
string FirstName = Console.ReadLine(); //read data from commandline
Console.WriteLine("Please enter your Last name");
string LastName = Console.ReadLine();
//Console.WriteLine("Hello " + UserName); Concatenation
Console.WriteLine("Hello {0} {1}", FirstName, LastName); //Place Holder Syntax
}
}