Could someone explain how to get to the answers. I read the book from class and cannot find the answers to the last 3 problems. I am not asking for the answers, just how to figure to resolve the problem. I appreciate the help.

Consider the following selection statement where X is an integer test score between 0 and 100.

input X

if (0 <= X and X < 49)

output "you fail"

else if (50 <= X and X < 70)

output "your grade is" X

output "you did OK"

else if (70 <= X and X < 85)

output "your grade is" X

output "you did well"

else if (85 <= X and X < 100)

output "your grade is" X

output "you did great"

endif

output "how did you do?"

What will be printed if the user enters “Wingding”?

o Is this design robust? If so, explain why. If not, explain what you can do to make it robust.

o How many levels of nesting are there in this design?

o Give a set of values that will test the normal operation of this program segment. Defend your choices.

o Give a set of test values that will cause each of the branches to be executed.

o Give a set of test values that test the abnormal operation of this program segment