Assignment 002

src/Main.java

@@ -0,0 +1,19 @@
+import java.util.Scanner;
+public class Main {
+    public static void main(String[] args) {
+        Scanner s = new Scanner(System.in);
+        try {
+            System.out.println("Please enter the number of sides for a polygon: ");
+            int numSides = Integer.parseInt(s.nextLine()); // n = numSides, n = 8 was not right
+            double angleB = 360.0 / numSides;
+            double angleA = angleB / 2;
+            double side = 2 * Math.sin(Math.toRadians(Math.toRadians(angleA))); // side = s
+            double p = numSides * side; // p = perimeter
+            double myPI= p / 2;
+            System.out.printf("My estimate for PI: %.15f Real PI: %.15f%n", myPI, Math.PI);
+
+        } catch(NumberFormatException nfe) {
+            System.out.println("You need to enter a number.");
+        }
+            }
+        }