first commit

Ugesedler/Ugeseddel-4 24-09-2025/OpgaverEftermiddag.java

@@ -0,0 +1,93 @@
+import java.util.Scanner;
+
+public class OpgaverEftermiddag {
+
+    public static void main(String[] args) {
+        Scanner console = new Scanner(System.in);
+        Opgave1.opgave1(console);
+        Opgave2.opgave2(console);
+        Opgave4.opgave4(console);
+    }
+}
+
+class Opgave1 {
+
+    public static void opgave1(Scanner console) {
+        int running = 1;
+        double sum = 0;
+        double amount = 0;
+        System.out.println(
+            "Indtast tal, der skal tages gennemsnit fra. Indtast \"-1\" for at stoppe."
+        );
+        while (running == 1) {
+            System.out.print("Indtast tal: ");
+            double input = console.nextInt();
+            if (input == -1) {
+                break;
+            }
+            sum += input;
+            amount++;
+        }
+        double average = sum / amount;
+        System.out.println("Gennemsnittet blev " + average);
+    }
+}
+
+class Opgave2 {
+
+    public static void opgave2(Scanner console) {
+        System.out.print("Indtast Brugernavn: ");
+        String brugernavn = console.nextLine();
+        if (brugernavn.equals("admin") && tjekAdgangskode(console)) {
+            System.out.println("Adgang givet");
+        } else {
+            System.out.println("Adgang nægtet");
+        }
+    }
+
+    public static boolean tjekAdgangskode(Scanner console) {
+        System.out.print("Indtast adgangskode: ");
+        String adgangskode = console.nextLine();
+
+        return adgangskode.equals("wKzsP9A\\JWY!");
+    }
+}
+
+class Opgave3 {
+    // Laves i Python, se Opgaver.py-filen
+}
+
+class Opgave4 {
+
+    public static void opgave4(Scanner console) {
+        System.out.println("Tell me about the person applying for a loan.");
+        int age = get_number(console, "What age is the person? ");
+        int money = get_number(
+            console,
+            "How many dollars does the person have? "
+        );
+
+        boolean working_age = (age >= 18 && age < 70);
+        boolean rich = (money >= 100000);
+
+        if (working_age && rich) {
+            System.out.println("Loan granted.");
+        } else {
+            System.out.println("Loan denied");
+        }
+    }
+
+    public static int get_number(Scanner console, String prompt) {
+        System.out.print(prompt);
+        while (!console.hasNextInt()) {
+            console.next();
+            System.out.println("Not an integer; try again.");
+            System.out.print(prompt);
+        }
+        return console.nextInt();
+    }
+}
+
+class Opgave5 {
+    // Laves i Python. Kig i Opgaver.py-filen
+}