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30_Days-of_Code_Challenges/Day17MoreExceptions/Program.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Day17MoreExceptions
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Calculator c = new Calculator();
+            Console.WriteLine(c.power(3, 5));
+            Console.WriteLine(Math.Pow(3, 5 ));
+            Console.ReadKey();
+        }
+    }
+    class Calculator
+    {
+        public int power(int n, int p)
+        {
+            int result = 1;
+            if (n < 0 || p < 0)
+            {
+                throw new Exception("n and p should be non-negative");
+            }
+            else
+            {
+                for (int i = 1; i <= p; i++)
+                {
+                    result *= n;
+                }
+            }
+
+            return result;
+        }
+    }
+}