using System;

namespace StringInterpolation
{
    class Customer
    {
        public string Name { get; set; } = "Jane";
        public int Age { get; set; } = 25;
    }

    class StringInterpolations
    {
        static void Main(string[] args)
        {
            Customer customer = new Customer();

            Console.WriteLine($"{customer.Name} is {customer.Age} year{ (customer.Age == 1 ? "" : "s")} old");
            Console.ReadLine();
        }
    }
}