void main() {
    int age = 15;
    boolean hasPermission = true;

    IO.println(age >= 13 && age <= 19);
    IO.println(age < 13 || hasPermission);
    IO.println(!hasPermission);
}

// From Groundwork, chapter 3 (ch03-expressions-and-operators), box 13.
// This example is from Groundwork, licensed CC BY-NC-SA 4.0.
// Run with: java ch03_13.java