Adding a Contact

Part of the Logic & Flow section of Coddy's Lua journey — lesson 43 of 54.

Challenge

Easy

Implement the contact addition feature for your contact list application. When the user enters add, the program should prompt for contact details and store them in the contacts list.

Building on the previous main loop, add functionality to handle the add command. When this command is entered, prompt the user for a name and phone number, create a contact table with these details, and add it to the contacts list using table.insert().

Requirements:

Keep all code from the previous challenge (setup, menu display, and main loop)
When the user enters add, print: Enter name:
Read the name using io.read()
Print: Enter phone number:
Read the phone number using io.read()
Create a dictionary-style table with keys name and phone
Insert this contact table into the contacts list using table.insert()
Print: Contact added successfully!
The quit command should still work as before
Other commands should still print Command not yet implemented

Example interaction:

Welcome to Contact List Manager!

Available Commands:
add - Add a new contact
list - Display all contacts
search - Search for a contact
delete - Delete a contact
quit - Exit the program

Enter command:
add
Enter name:
Alice
Enter phone number:
555-1234
Contact added successfully!

Enter command:
add
Enter name:
Bob
Enter phone number:
555-5678
Contact added successfully!

Enter command:
list
Command not yet implemented

Enter command:
quit
Goodbye!

Try it yourself

-- Initialize the contacts table
local contacts = {}

-- Display welcome message and menu
print("Welcome to Contact List Manager!")
print()
print("Available Commands:")
print("add - Add a new contact")
print("list - Display all contacts")
print("search - Search for a contact")
print("delete - Delete a contact")
print("quit - Exit the program")
print()

-- Main program loop
while true do
    print("Enter command:")
    local command = io.read()
    
    if command == "quit" then
        print("Goodbye!")
        break
    else
        print("Command not yet implemented")
    end
    
    print()
end