using System;

public class Program

{

    public static void Main()

    {

        DateTime dt = DateTime.Now;

        Console.WriteLine ("Today is {0:d} at {0:t}", dt);

        Console.WriteLine("Number x is {0}. Number y is {1:0.0}", 7,3.14);

        Console.WriteLine("Number x is {0}. Number y is {1:##.##}", 7,3.14);

        Console.WriteLine("Number x is {0}. Number y is {1:F3}", 7,3.14);

        Console.WriteLine("Number x is "+7+". Number y is "+3.14);

        int x = 6;

        Console.WriteLine(@"Today 

        is Monday");

        Console.WriteLine($"the number is {x}");                  

    }

}