Programming Logic and Design, 6th Edition

Chapter 5

Exercises

1. What is output by each of the pseudocode segments in Figure 5-22?

Answer:
a. 5, 22, 5
b. 4, 6, 7
c. 5, 6
d. Goodbye
Goodbye
Goodbye
Goodbye
Goodbye
Goodbye
Goodbye
Goodbye
Goodbye
e. Hello
Hello
Hello
f. Adios
Adios
Adios
Adios
Adios
Adios
Adios
Adios

2. Design the logic for a program that outputs every number from 1 through 10.

Answer:
A sample solution follows

Flowchart:

Pseudocode:

start Declarations num number housekeeping() number = 1 while number 99999 output “Please enter a valid zip code” input custZip endwhile return

validateCustAge() while custAge < 10 OR custAge > 110 output “Please enter a valid customer age” input custAge endwhile return

validateNumItems() Declarations num attempts = 0 num LIMIT = 2 validNumItems = 1 while (numItems < 1 OR numItems > 12) AND attempts < LIMIT output “Please reenter the number of items” input numItems attempts = attempts + 1 endwhile if attempts = 2 AND numItems < 0 then output “An invalid number of items was entered” output “This order will not be counted” validNumItems = 0 endif return

housekeeping() output ZIP_PROMPT input custZip return detailLoop() output AGE_PROMPT input custAge output ITEM_PROMPT input numItems

validateZipCode() validateCustAge() validateNumItems()

countOfOrders = countOfOrders + 1 totalCustAge = totalCustAge + custAge

if custZip = STORE_ZIP numItemsInStoreZip = numItemsInStoreZip + numItems else numItemsInOtherZips = numItemsInOtherZips + numItems endif

if custAge < 30 then numItemsUnder30 = numItemsUnder30 + numItems else numItems30AndOlder = numItems30AndOlder + numItems endif output ZIP_PROMPT