Challenges

Remember the rules for this are

• Try to use only the information given up to this point in this book.
• Try not to give up until you've given it a solid attempt

Challenge 1

What will this program output when run? Write down your guess and then try running it.

void main() {
    boolean a = true;
    boolean b = false;
    boolean c = true;
    boolean d = false;

    boolean result = a || b && c || !d;

    System.out.println(result);
}

Challenge 2

What will this program output when run? Write down your guess and then try running it.

void main() {
    boolean a = true;
    boolean b = false;
    boolean c = true;
    boolean d = false;

    boolean result = !(a || b && c || !d) || (a && b || c);

    System.out.println(result);
}

Challenge 3

Say you have two boolean variables, how could you use the operators we've covered to get the "exclusive or" of the two.

void main() {
    // Change these two variables to test your solution
    boolean hasIceCream = true;
    boolean hasCookie = false;

    boolean validChoice = < YOUR CODE HERE >;

    System.out.println(validChoice);
}

Make sure to test all the possibilities.