using System.Collections.Generic;
using System.Threading.Tasks;
public static void Main()
string name1 = "Hello World!";
string date = "10/4/2016";
Console.WriteLine("{0}", name1);
Console.WriteLine("Columbus Sailed the world in {0}", year1);
Console.WriteLine("It is {0} that I have a dog at home, but we will get one soon!", ifdog);
Console.WriteLine("Today is {0}.", date);
Console.WriteLine("I spent ${0} on a Cheeseburger.", price);
Console.WriteLine("{0} marks the Spot.", letter);