Norah Batarfi- Temperature Converter

src/App.java

@@ -1,5 +1,66 @@
+import java.util.InputMismatchException;
+import java.util.Scanner;
+
 public class App {
-    public static void main(String[] args) throws Exception {
-        System.out.println("Hello, World!");
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+
+        while (true) {
+
+            System.out.println("\nTemperature Conversion Program ");
+            System.out.println("Enter your choice:");
+            System.out.println("1. Celsius to Fahrenheit");
+            System.out.println("2. Fahrenheit to Celsius");
+            System.out.println("0. Exit");
+            System.out.print("Enter your choice (1, 2, or 0): ");
+
+            int choice;
+            try {
+                choice = scanner.nextInt();
+            } catch (InputMismatchException e) {
+                System.out.println("Invalid input. Please enter a number (1, 2, or 0).");
+                scanner.nextLine(); 
+                continue;
+            }
+
+
+            if (choice == 0) {
+                System.out.println("Exiting program");
+                break;
+            }
+            double temperature;
+            while (true) {
+                try {
+                    System.out.print("Enter temperature to convert: ");
+                    temperature = scanner.nextDouble();
+                    break;
+                } catch (InputMismatchException e) {
+                    System.out.println("Invalid input. Please enter a number.");
+                    scanner.nextLine(); 
+                }
+            }
+
+
+            char conversionType = choice == 1 ? 'C' : 'F';
+
+
+            double convertedTemperature = convertTemperature(temperature, conversionType);
+            System.out.printf("The converted temperature is: %.2f\n", convertedTemperature);
+        }
+
+
+        scanner.close(); 
+    }
+
+    public static double convertTemperature(double temperature, char conversionType) {
+        if (conversionType == 'C') {
+            return (temperature * 9/5) + 32;
+        } else if (conversionType == 'F') {
+            return (temperature - 32) * 5/9;
+        } else {
+            System.out.println("Invalid conversion type. Please enter 'C' or 'F'.");
+            return Double.NaN; 
+        }
     }
 }