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listas3/source/exercicio2.cs

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+using System;
+
+namespace exercicios
+{
+	class Exercicio2{
+		public static void Init()
+		{
+			int n;
+			Console.WriteLine("Insert a value");
+			n = int.Parse(Console.ReadLine());
+			
+			Console.WriteLine("{0}! = {1}",n,calcularFatorial(n));
+			
+		}
+		static int calcularFatorial(int n)
+		{
+			int fat = 1;
+			
+			for(int i = 1; i <= n; i++)
+			{
+				fat *= i;
+			}
+			
+			return fat;
+		}
+	}
+}