starting out with programming logic & design second edition by tony gaddis

Copyright © 2010 Pearson Education, Inc. Publishing as Pearson Addison-Wesley

Starting Out with Programming Logic & Design

Second Edition

by Tony Gaddis

Chapter 11:Menu-Driven Programs

Copyright © 2010 Pearson Education, Inc. Publishing as Pearson Addison-Wesley 11-2

Chapter Topics

11.1 Introduction to Menu-Driven Programs

11.2 Modularizing a Menu-Driven Program

11.3 Using a Loop to Repeat the Menu

11.4 Multiple-Level Menus



A menu is a list of operations that are displayed by a program, in which a user can select which operations to perform

Figure 11-1 A menu



A decision structure can be used to perform menu selections– This can be accomplished through a case structure,

series of nested if-then-else statements– A case structure is easier to follow the flow– A case structure will provide a case for each option

in the menu, in addition to a default case



Figure 11-2 Flowchart for Program 11-1



Validating the menu selection can be done before the case is processed, allowing for no need for a default

Display “Enter your selection”Input menuSelection

//validationWhile menuSelection < 1 OR menuSelection >3

Display “That is an invalid selection. Enter 1, 2 or 3”Input menuSelection

End While



Since a menu-driven program is capable of performing many tasks, it should be put into modules– A module should be written for each case that

could be processed– The options would simply call modules– Allows for a clear flow of the program



Figure 11-5 Flowchart for the main module in Program 11-3


11.3 Using a Loop to Repeat the MenuMost menu-driven programs use a loop to

repeatedly display the menu after a task is performed– This allows the user of the program to run another

option without restarting the program– The menu can also contain on option for ending

the programDisplay “1. Convert inches to centimeters.”Display “2. Convert feet to meters.”Display “3. Convert miles to kilometers.”Display “4. End the program.”


11.3 Using a Loop to Repeat the Menu

Figure 11-7 Flowchart for the main module in Program 11-5



A multiple-level menu has a main menu and one or more submenus– Some complex programs require more than one

menu– A programmer should consider breaking up long

menus into multiple menus– This is essentially nested case structures


11.4 Multiple-Level MenusInstead of this type of long menu

1. Process a sale2. Process a return3. Add a record to the inventory file4. Search for a record in the inventory file5. Modify a record in the inventory file6. Delete a record in the inventory file7. Print an inventory list report8. Print a list of inventory items by cost9. Print a list of inventory items by age10. Print a list of inventory items by retail value


11.4 Multiple-Level MenusConvert to multiple menus such as

Main Menu1. Process a Sale or a Return2. Update the Inventory File3. Print an Inventory Report4. Exit the Program

Sales and Returns Menu1. Process a Sale2. Process a Return3. Go Back to the Main Menu



More menusUpdate Inventory File Menu

1. Add a Record

2. Search for a Record

3. Modify a Record

4. Delete a Record

5. Go Back to the Main Menu



More menusInventory Report Menu

1. Print an inventory list report

2. Print a list of inventory items by cost

3. Print a list of inventory items by age

4. Print a list of inventory items by retail value

5. Go Back to the Main Menu

starting out with programming logic & design second edition by tony gaddis

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