Question

a loop invariant need not be true
a) at the start of the loop
b) at the start of each iteration
c) at the end of each iteration
d) at the start of the algorithm​

Answer 1

Answer:

If false, then the algorithm has failed. Invariant in this case means a condition that must be true at a certain point in every loop iteration. In contract programming, an invariant is a condition that must be true (by contract) before and after any public method is called.