Console if the contacts file is not found Contact Manager Could not find contacts file! Starting new contacts file... COMMAND MENU list - Display all contacts view - View a contact add - Add a contact del exit - Exit program Delete a contact Command: list There are no contacts in the list. Command: add Name: Mike Murach Email: mike@murach.com Phone: 559-123-4567 Mike Murach was added. Command: list 1. Mike Murach Command: view Number: 2 Invalid contact number. Command: view Number: x Invalid integer. Command: view Number: 1 Name: Mike Murach Email: mike@murach.com Phone: 559-123-4567 Command: exit Bye! Specifications • When the program starts, it should read the contacts from a CSV file named contacts.csv. Your instructor should provide this file if you don't already have it. • If the program can't find the CSV file, it should display an appropriate message and create a new CSV file that doesn't contain any contact data. • For the view and del commands, display an appropriate error message if the user enters an invalid integer or an invalid contact number. When you add or delete a contact, the change should be saved to the CSV file immediately. That way.

Console if the contacts file is not found Contact Manager Could not find contacts file! Starting new contacts file... COMMAND MENU list - Display all contacts view - View a contact add - Add a contact del exit - Exit program Delete a contact Command: list There are no contacts in the list. Command: add Name: Mike Murach Email: mike@murach.com Phone: 559-123-4567 Mike Murach was added. Command: list 1. Mike Murach Command: view Number: 2 Invalid contact number. Command: view Number: x Invalid integer. Command: view Number: 1 Name: Mike Murach Email: mike@murach.com Phone: 559-123-4567 Command: exit Bye! Specifications • When the program starts, it should read the contacts from a CSV file named contacts.csv. Your instructor should provide this file if you don't already have it. • If the program can't find the CSV file, it should display an appropriate message and create a new CSV file that doesn't contain any contact data. • For the view and del commands, display an appropriate error message if the user enters an invalid integer or an invalid contact number. When you add or delete a contact, the change should be saved to the CSV file immediately. That way.

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

Console if the contacts file is not found
Contact Manager
Could not find contacts file!
Starting new contacts file...
COMMAND MENU
list - Display all contacts
view - View a contact
add - Add a contact
del - Delete a contact
exit Exit program
Command: list
There are no contacts in the list.
Command: add
Name: Mike Murach
Email: mike@murach.com
Phone: 559-123-4567
Mike Murach was added.
Command: list
1. Mike Murach
Command: view
Number: 2
Invalid contact number.
Command: view
Number: *
Invalid integer.
Command: view
Number: 1
Name: Mike Murach
Email: mike@murach.com
Phone: 559-123-4567
Command: exit
Bye!
Specifications
•
When the program starts, it should read the contacts from a CSV file named contacts.csv. Your
instructor should provide this file if you don't already have it.
•
If the program can't find the CSV file, it should display an appropriate message and create a new
CSV file that doesn't contain any contact data.
•
For the view and del commands, display an appropriate error message if the user enters an invalid
integer or an invalid contact number.
•
When you add or delete a contact, the change should be saved to the CSV file immediately. That way,
no changes are lost, even if the program crashes later.

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