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

struct node {
	int val;
	node* next;
};
void Add(node*&, double);
void Show(node*);
void LoadList(node*&);
void Swap(node*&);

int main()
{
	node *H = NULL;
	LoadList(H);
	Show(H);
	cout << endl;
	Swap(H);
	Show(H);

	system("PAUSE");
	return 0;
}

void Add(node*& Head, double x) {
	node* p = new node;
	p->val = x;

	p->next = Head;
	Head = p;
}
void Show(node * Head) {
	node* p = Head;
	while (p != NULL) {
		cout << p->val << " ";
		p = p->next;
	}
}
void LoadList(node *&Head) {
	double tmp;
	fstream plik;
	plik.open("D:\\Liczby.txt", std::ios::in | std::ios::out);
	if (plik.good() == true)
	{
		while (!plik.eof()) {
			plik >> tmp;
			Add(Head, tmp);
		}
		plik.close();
	}
}

void Swap(node *&Head) {
	node* p = Head;
	node* q = p->next;

	p->next = q->next;
	q->next = Head;
	Head = q;
	p = q;
	q = Head;
}