using System;

public class Program

{

    public static void Main()

    {

        int number = 10;

        Console.WriteLine(string.Format("I have {0} dollars", number));

        // String Concatenation

        Console.WriteLine("I have " + number + " dollars.");

        // String Format

        Console.WriteLine(string.Format("I have {0} dollars", number));

        // String Interpolation

        Console.WriteLine($"I have {number} dollars");

    }

}