Big Idea 1 Lesson 1.3

Popcorn Hacks 1 & 2

Was answered on the lesson during the class peiod.

Homework Hacks

Homework Hack 1

1. The output is that AP CSA is on one line and the next line says Rocks!

2. See below

System.out.println("C:\\Users\\Student");

C:\Users\Student

1. See below.

import java.util.Scanner;

public class Menu {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        System.out.println("==== Main Menu ====");
        System.out.println("1. Start Game");
        System.out.println("2. Instructions");
        System.out.println("3. Exit");
        System.out.println("4. Settings");  

        System.out.print("Choose an option: ");
        int choice = sc.nextInt();

        System.out.println("You selected option: " + choice);

        int optionCount = 4;  
        System.out.println("There are " + optionCount + " total options.");
    }
}

1. See below.

System.out.printf("Pi = %.2f\n", Math.PI);

Pi = 3.14





java.io.PrintStream@3d817c54

Homework Hack 2

import java.util.Scanner;

public class Menu {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        // Print calculator menu
        System.out.println("==== Calculator Menu ====");
        System.out.println("1. Add");
        System.out.println("2. Subtract");
        System.out.println("3. Multiply");
        System.out.println("4. Divide");

        // Ask user to choose an option
        System.out.print("Choose an option: ");
        int choice = sc.nextInt();

        // Ask for two numbers
        System.out.print("Enter first number: ");
        double num1 = sc.nextDouble();

        System.out.print("Enter second number: ");
        double num2 = sc.nextDouble();

        double result = 0; // variable to store the result
        boolean validChoice = true;

        // Compute result based on user choice
        switch(choice) {
            case 1: // Add
                result = num1 + num2;
                break;
            case 2: // Subtract
                result = num1 - num2;
                break;
            case 3: // Multiply
                result = num1 * num2;
                break;
            case 4: // Divide
                if (num2 != 0) {
                    result = num1 / num2;
                } else {
                    System.out.println("Error: Cannot divide by zero.");
                    validChoice = false;
                }
                break;
            default:
                System.out.println("Invalid choice.");
                validChoice = false;
        }

        // Print result if valid
        if (validChoice) {
            System.out.println("Result: " + result);
        }
    }
}

==== Calculator Menu ====

1. Add
2. Subtract
3. Multiply
4. Divide Choose an option: 1 Enter first number: 10 Enter second number: 5 Result: 15.0

Homework Hack 3

• Photo submitted directly in form as asked.