Week 7_Homework_Draft2 - Chapter 11 Answers to Exercises 1....

Chapter 11 Answers to Exercises
1. The Springwater Township School District has two high schools—Jefferson and
Audubon. Each school maintains a student file with fields containing student ID, last
name, first name, and address. Each file is in student ID number order. Write the
flowchart or pseudocode for the program that merges the two files into one file
containing a list of all students in the district, maintaining student ID number order.

if jeffId > audId then
write audId, audLast, audFirst, audAddress
perform readAudubon( )
else
write jeffId, jeffLast, jeffFirst, jeffAddress
perform readJefferson( )
endif
if jeffId = 9999 then
if audId = 9999 then
bothDone = "Y"
endif
endif
return
finishUp( )
close files
return

Flow chart:

2. The Redgranite Library keeps a file of all books borrowed every month. Each file is in
Library of Congress number order and contains additional fields for author and title.
a. Write the flowchart or pseudocode for the program that merges the files for January and
February to create a list of all books borrowed in the two-month period.

perform readFeb( )
endif
if janId = 9999 then
if febId = 9999 then
bothDone = "Y"
endif
endif
return
finishUp( )
close files
return

Flow chart:

b. Modify the program from Exercise 2a so that if there is more than one record for a
book number, you print the book information only once.

else
if febId not = saveId then
write febId, febTitle, febAuthor
saveId = febId
perform readFeb( )
endif
endif
if janId = 9999 then
if febId = 9999 then
bothDone = "Y"
endif
endif
return
finishUp( )
close files
return

Flow chart: