C++ questions

Question 3 0 2.3 points The body of the while loop must be enclosed with C ) None of these. Any of these Question 6 0 2.3 points The expression (in a while structure) is . a counter designed to always yield the boolean value: true Usually a logical expression designed to never yield the boolean value: true None of these. Question 8 0 2.3 points In order to avoid an infinite loop it is necessary that the body of the loop contain statements that assure that the exit condition cannot evaluate to false. None of these. the body of the loop contain statements that assure that the exit condition will eventually evaluate to true entry into a while loop can never occur the body of the loop contain statements that assure that the exit condition will eventually evaluate to false