600.226 Assignment 1

Solution is now online.

1. 5 points
What does the following code fragment produce? Explain.

/* Begin Code fragment */
class classclass {
  class A {
    A() { System.out.println("I am A"); }
  }

  class B {
    B() { System.out.println("I am B"); }
  }

  class C extends A {
    public B b;

    C()      { System.out.println("I am C"); }
    C(int p) { System.out.println("I am C with " + p); }

  }

  void dummy() {
    C c1;
    C c2 = new C(5);
  }
}

class classmain {
  public static void main(String argv[]) {
    classclass c = new classclass();
    c.dummy();
  }
}
/* End Code fragment */

2. 5 points
What does the print statement in the following code fragment produce?
/* Begin Fragment */
   int i;
   for(i=0; i<10; i++);
      System.out.println(i);
/* End fragment */

3. 5 points
   Find the value of the given expressions (say *illegal*, if applicable):
   int a = 2, b = 5, c = 0, d = 3;
   Expression			Value
     b % a
     a < d
     (c != b) && (a > 3)
     a/b > c
     a*b > 2

4. 10 points
    Write a program to generate the value of e.
          e = 1 + 1/1! + 1/2! + 1/3! + 1/4! + ...
   Let the user specify the number of terms used in the evaluation.

5. 10 points
   Goodrich and Tamassia, 2ed, problem C-2.3

6. 5 points
   Goodrich and Tamassia, 2ed, Problem R-2.10

7. 10 points
   Goodrich and Tamassia, 2ed, Problem P-2.3