using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("\n --- For REGULAR NOUNS --- \n");

        {

            int count1 = 1;

            Console.WriteLine($"I have {count1} apple{(count1 == 1 ? "" : "s")}.");

            int count2 = 5;

            Console.WriteLine($"I have {count2} apple{(count2 == 1 ? "" : "s")}.");

        }

​

        Console.WriteLine("\n --- For IRREGULAR NOUNS --- \n");

        {

            int count1 = 1;

            Console.WriteLine($"He has {count1} {(count1 == 1 ? "leaf" : "leaves")}.");

            int count2 = 5;

            Console.WriteLine($"He has {count2} {(count2 == 1 ? "leaf" : "leaves")}.");

        }

    //Reference: https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/interpolated-strings

    }

}