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-- Contact List Manager
local contacts = {}

-- Display welcome message
print("Welcome to Contact List Manager!")
print()

-- Display menu
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 loop
while true do
    print("Enter command:")
    local command = io.read()
    
    if command == "add" then
        print("Enter name:")
        local name = io.read()
        print("Enter phone number:")
        local phone = io.read()
        
        table.insert(contacts, {name = name, phone = phone})
        print("Contact added successfully!")
        print()
        
    elseif command == "list" then
        if #contacts == 0 then
            print("No contacts available.")
        else
            print("Contact List:")
            for i, contact in ipairs(contacts) do
                print(i .. ". " .. contact.name .. " - " .. contact.phone)
            end
        end
        print()
        
    elseif command == "search" then
        print("Enter name to search:")
        local searchName = io.read()
        local found = false
        
        for i, contact in ipairs(contacts) do
            if contact.name == searchName then
                print("Found: " .. contact.name .. " - " .. contact.phone)
                found = true
                break
            end
        end
        
        if not found then
            print("Contact not found.")
        end
        print()
        
    elseif command == "quit" then
        print("Goodbye!")
        break
        
    else
        print("Command not yet implemented")
        print()
    end
end