Godwin Arege U24EEE2004

CONTRIBUTORS.md

@@ -6,3 +6,4 @@
 <li>Owaniyi Oluwafemi Micheal, (@Chuckycipher), Cybersecurity_department, U23CYS1072</li>
 </ol>
 <li>Ahmad Muhammad Idris, (@LuffytheGoat), Physics with Electronics, U23PE1008</li>
+<li>Godwin Arege, (godwin849), U24EEE2004, Electrical and electronics engineering</ol>

SwingCalculator.java

@@ -0,0 +1,83 @@
+import java.util.Scanner;
+import java.util.InputMismatchException;
+
+public class ConsoleCalculator {
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        boolean running = true;
+
+        System.out.println("Java Console Calculator");
+        System.out.println("=======================");
+
+        while (running) {
+            displayMenu();
+            int choice = getIntInput(scanner, "Enter your choice: ");
+
+            if (choice == 5) {
+                running = false;
+                System.out.println("Exiting calculator. Goodbye!");
+                continue;
+            }
+
+            if (choice < 1 || choice > 4) {
+                System.out.println("Invalid choice! Please try again.");
+                continue;
+            }
+
+            double num1 = getDoubleInput(scanner, "Enter first number: ");
+            double num2 = getDoubleInput(scanner, "Enter second number: ");
+            performOperation(choice, num1, num2);
+        }
+
+        scanner.close();
+    }
+
+    private static void displayMenu() {
+        System.out.println("\nAvailable operations:");
+        System.out.println("1. Addition (+)");
+        System.out.println("2. Subtraction (-)");
+        System.out.println("3. Multiplication (*)");
+        System.out.println("4. Division (/)");
+        System.out.println("5. Exit");
+    }
+
+    private static void performOperation(int choice, double num1, double num2) {
+        switch (choice) {
+            case 1 -> System.out.printf("Result: %.2f + %.2f = %.2f%n", num1, num2, num1 + num2);
+            case 2 -> System.out.printf("Result: %.2f - %.2f = %.2f%n", num1, num2, num1 - num2);
+            case 3 -> System.out.printf("Result: %.2f * %.2f = %.2f%n", num1, num2, num1 * num2);
+            case 4 -> {
+                if (num2 == 0) {
+                    System.out.println("Error: Cannot divide by zero!");
+                } else {
+                    System.out.printf("Result: %.2f / %.2f = %.2f%n", num1, num2, num1 / num2);
+                }
+            }
+        }
+    }
+
+    private static int getIntInput(Scanner scanner, String prompt) {
+        while (true) {
+            try {
+                System.out.print(prompt);
+                return scanner.nextInt();
+            } catch (InputMismatchException e) {
+                System.out.println("Invalid input! Please enter an integer.");
+                scanner.nextLine(); // Clear invalid input
+            }
+        }
+    }
+
+    private static double getDoubleInput(Scanner scanner, String prompt) {
+        while (true) {
+            try {
+                System.out.print(prompt);
+                return scanner.nextDouble();
+            } catch (InputMismatchException e) {
+                System.out.println("Invalid input! Please enter a number.");
+                scanner.nextLine(); // Clear invalid input
+            }
+        }
+    }
+}