static void Main(string[] args) { Building nss = new Building("301 Plus Park Ave") { Width = 250, Depth = 250, Stories = 5 }; nss.Construct(); nss.Purchase("Steve"); // Console.WriteLine (nss.ToString ()); Building oldNSS = new Building("500 Interstate Blvd S"); oldNSS.Width = 150; oldNSS.Depth = 150; oldNSS.Stories = 3; oldNSS.Construct(); oldNSS.Purchase("John"); // Console.WriteLine (oldNSS.ToString ()); Building house = new Building("1201 First Str") { Width = 100, Depth = 100, Stories = 1 }; house.Construct(); house.Purchase("Mom"); // Console.WriteLine (house.ToString ()); City nashville = new City("Nashville", 1800, "John Cooper"); nashville.AddCityBuilding(nss); nashville.AddCityBuilding(oldNSS); nashville.AddCityBuilding(house); Console.WriteLine($"City: {nashville.CityName}, Mayor: {nashville.MayorName}, Established: {nashville.Year}. City buildings: "); foreach (Building building in nashville.CityBuildings) { Console.WriteLine(building.ToString()); } }