Linked list head

[kraftykayjay]

I cannot figure out how to update node *head. I know realize it carries the NULL node from main to the insert program, but it doesn't come out as the new value, so when it reaches display it is still NULL and therefore doesn't have a value to display. Where am I missing adding the value to node *head? Am I using the linked list incorrectly?

  #include <iostream>
#include <iomanip>
using namespace std;


struct node
{
	int trackNo;
	mutable char animalName[50];
	double boardCharge;
	node *next;
};

//***********************
//Function prototypes
//***********************
void insert(node *head, node *curr);
void showList(node *head);



 
	  		

int main()
{
	   node *head = new node;
	  		head = NULL;
 //**********************************************
//Variable to deteermine whether to repeat or not
//***********************************************
char ContinuationFlag = 'Y';
char NextChar = '\0';

			node*temp;	 
				
				//********************
				//input of information
				//********************
    while (toupper(ContinuationFlag) == 'Y')  
		

			{

			temp = new node;
				cout<<"Input the tracking number of the animal"<<endl;
				cin>>temp->trackNo;
				cout<<"Input the name of the animal"<<endl;
				NextChar = cin.peek();
					if(NextChar == '\n')
					{
						cin.ignore();
				    }
				cin.get(temp->animalName, 50);
				cout<<"Input the charge for boarding the animal"<<endl;
				cin>>temp->boardCharge;
				
                //*******************************
				//send to function that captures list
				//**********************************
				
                insert(head,temp);
				

				//*******************
				//ask user if they want to continue
				//******************************
                cout<<endl<<"Do you wish to enter another item? "<<endl;
				cout<<"Enter 'Y' or 'N' "<<endl;
				
	            cin>>ContinuationFlag;
			}		

		
	//*********************************
	//when user is finish, displays list
	//*********************************
    showList(head);
	
    return 0;
}

void insert(node *head, node *curr)
{
				
		if(head == NULL)
		{
			head = curr;
			
		}
		else
		{
			node *temp = new node;
			temp =NULL;
			temp=head;
			temp=temp->next;
			curr = temp->next;
			head=curr;
			
		}
				
	      
}
void showList(node *head) 

{ 
	char Separator[50]="---------------------------";
	cout<<endl;
	cout<<setw(12)<<setfill(' ')<<" Tracking Number"
		<<setw(20)<<setfill(' ')<<" Type of Animal "
		<<setw(20)<<setfill(' ')<<" Daily Boarding Charge"
		<<endl;

	node *curr = new node;
	curr=NULL;
    curr=head;

    while(curr != NULL)
	{
		cout<<right;
		cout<<endl<<setw(9)<<setfill(' ')<<curr->trackNo;
		cout<<setw(18)<<setfill(' ')<< curr->animalName;
		cout<<fixed<<showpoint<<setprecision(2)
			<<setw(12)<<setfill(' ')<<curr->boardCharge
			<<endl;
        
		curr=curr->next;
		
	}
}