C++ Problem:

I am trying to write a function that sends a messege through a network of cities (linked list). I have included pictures of the code, city struct, defult network setup (order of cities on default networkodes of link list) and failed test cases. The city struct can not be modified and the code can not call any functions that aren't included in the or standard library. Please help me solve this!

Default network path (Linked List of city names):

Los Angeles -> Phoenix -> Denver -> Dallas -> Atlanta -> New York -> NULL 

Code:

Code Runner Failed Test Cases:

Purpose: populates the network with the predetermined cities @param head start of list @return head of list city* loadDefaultsetup(city *head) head = deleteEntireNetwork (head); head - addCity(head, NULL, "Los Angeles") city *tempCity tempCity = searchNetwork(head, head = addCity(head, tempCity, "Los Angeles"); "Phoenix"); tempCity searchNetwork(head, head = addCity(head, tempCity, "Phoenix"); "Denver"); tempCity= searchNetwork(head, head = addCity(head, tempCity, "Denver"); "Dallas"); tempCity= searchNetwork(head, head addCity(head, tempCity, "Dallas"); "Atlanta"); tempCity= searchNetwork(head, head = addCity (head, tempCity, "Atlanta"); "New York"); return head