done with assignment 005

Java-Assignment-005.iml

@@ -5,6 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

src/Quadratic.java

@@ -0,0 +1,58 @@
+import java.util.Scanner;
+
+public class Quadratic {
+
+    public static void main(String[] args) {
+
+        int a;
+        int b;
+        int c;
+        Scanner scanner = new Scanner(System.in);
+
+        System.out.print("Enter an amount for a: ");
+        if (!scanner.hasNextDouble()) {
+            String word = scanner.next();
+            System.err.println(word + " is not a number");
+            return;
+        }
+        a = scanner.nextInt();
+
+        System.out.print("Enter an amount for b: ");
+        if (!scanner.hasNextDouble()) {
+            String word = scanner.next();
+            System.err.println(word + " is not a number");
+            return;
+        }
+        b = scanner.nextInt();
+
+        System.out.print("Enter an amount for c: ");
+        if (!scanner.hasNextDouble()) {
+            String word = scanner.next();
+            System.err.println(word + " is not a number");
+            return;
+        }
+        c = scanner.nextInt();
+
+        quadriticEquation(a, b, c);
+
+
+    }
+
+    public static void quadriticEquation(int a, int b, int c) {
+
+        double discriminant = (b * b) - (4 * a * c);
+        double divide2A = (2 * a);
+
+        if (discriminant < 0 || divide2A == 0) {
+            // Discriminant is negative & Division by zero, no real roots
+            System.out.println("No real roots exist for the given quadratic equation.");
+        } else {
+            double plusX = ((-b) + Math.sqrt(discriminant)) / divide2A;
+            double minusX = ((-b) - Math.sqrt(discriminant)) / divide2A;
+
+            System.out.printf("The solutions are: x1 = %.02f, x2 = %.02f", plusX, minusX);
+        }
+
+    }
+
+}