public static void Main() { Library lib = new Library { new Card( Title: "Professional C# 6.0", Author: new List<string> {"Christian Nagel, Morgan Skinner" }, CatNum: new LoCnum(1234567890), Subject: new List<string> { "Programming", "C#", "Microsoft" }, Publisher: "WROX", WhenPublished: 2016, Circulation: true ), new Card( Title: "Beginning Visual C# \n2015 Programming", Author: new List<string> {"Benjamin Perkins, Jacob Vibe \n\t\t\t\t\tHammer, Jon D. Reid\t" }, CatNum: new LoCnum(1345678902), Subject: new List<string> {"Programming", "C#", "Microsoft", "Visual Studio" }, Publisher: "WROX", WhenPublished: 2015, Circulation: true ), new Card( Title: "Beginning ASP .NET 6: \nWeb Forms and MVC", Author: new List<string> {"William Penberthy" }, CatNum: new LoCnum(1456789023), Subject: new List<string> {"Programming", "ASP", ".NET", "Microsoft", "MVC", "Web Forms" }, Publisher: "WROX", WhenPublished: 2015, Circulation: true ), new Card( Title: "C# 24-Hour Trainer", Author: new List<string> {"Rod Stephens\t\t" }, CatNum: new LoCnum(1567890234), Subject: new List<string> {"Programming", "C#", "Microsoft" }, Publisher: "WROX", WhenPublished: 2015, Circulation: false ), new Card( Title: "Professional Visual Studio", Author: new List<string> {"Bruce Johnson" }, CatNum: new LoCnum(1678902345), Subject: new List<string> {"Programming", "Microsoft", "Visual Studio" }, Publisher: "WROX", WhenPublished: 2015, Circulation: true ), }; Console.WriteLine("\tNow searching subject headings for 'C#'...\n"); Console.Write(lib.SubjectSearch("C#")); Console.ReadKey(); }