Solution: Exercises 6–9 each contain a while loop annotated
Chapter 5, Problem 9E(choose chapter or problem)
Problem 9E
Exercises 6–9 each contain a while loop annotated with a preand a post-condition and also a loop invariant. In each case, use the loop invariant theorem to prove the correctness of the loop with respect to the pre- and post-conditions.
[Pre-condition: a = A and A is a positive integer.]
while ( a > 0)
1. a := a − 2
end while
[Post-condition: a = 0 if A is even and a = −1 if A is odd.] loop invariant: I (n) is “Both a and A are even integers or both are odd integers and a ≥ −1.”
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer