head of linklist passed as argument having problems changing value of head node

[glennpl]

I am attempting to change the value of the head node in my list. I thought due to having pointer defined in parameter list I could change the address value of head node. The argument passed is a struct I did not have to use & in argument list to denote address of struct to compiler. This may have something to do with my problem. I did not include all routines called by main program just the deleteNode routine im having problems with.

bool deleteNode(struct node *head, struct node *delptr)
	{
		node *cur = head;
		node *tempNextptr= cur;
		using namespace std;

		 while(cur)
		{
			if (cur == delptr)
			{
				tempNextptr->next = delptr->next;
			
				if(cur == head)
					head = head->next;
				
				delete cur;
				return true;
			}
	
			    tempNextptr = cur;
			    cur = cur->next;
		}

          return false;
	}


int main()
{
	using namespace std;

    node *head = new node;
    struct node *found;
	bool remove;

	initNode(head,10);
	display(head);
    addNode(head,20);
	display(head);
	addNode(head,30);
	display(head);
	found = searchNode(head,20);
	cout<<"search node = "<< found->data<< endl;
	remove = deleteNode(head,head);
	cout<<"head= "<<head<<endl;
  //  display(head);

	if(remove)
	  cout<<"true"<<endl;
	else
		cout<<"false"<<endl;


	cin.clear();
	cin.ignore(255,'/n');
	cin.get();

	return 0;
}

[3hM2Nwbp]

You can pass a reference to the pointer:

#include <iostream>
using namespace std;

void swap(int*& pointer_ref0, int*& pointer_ref1)
{
	int* temp = pointer_ref0;
	pointer_ref0 = pointer_ref1;
	pointer_ref1 = temp;
}

int main()
{
	int x = 4;
	int y = 6;
	int* x_ptr = &x;
	int* y_ptr = &y;
	swap(x_ptr, y_ptr);
	std::cout << x << " " << y << std::endl;
	std::cout << *x_ptr << " " << *y_ptr << std::endl;
}