using System; public class Test { public static void Main() { string[] fizzbuzz = new[] { "fizzbuzz", "{0}", "{0}", "fizz", "{0}", "buzz", "fizz", "{0}", "{0}", "fizz", "buzz", "{0}", "fizz", "{0}", "{0}" }; for (int index = 1; index <= 100; index++) { Console.Out.WriteLine(string.Format(fizzbuzz[index % 15], index)); } } }