severalNODESatback.cpp

#include <iostream>
using namespace std;

class Node {
private:
  int value;
  // you can include more data items here
  Node *next;
public:
  void loaddata(int v, Node* p);
  int getvalue() { return value; }
  Node* getnext() { return next; }
  void setvalue(int v) { value = v; }
  void setnext(Node* p) { next =p; }
};

void displaylist();

Node* listpointer;

int main() {
  Node *temp, *lastnode;
  int number;
  listpointer = NULL;
  // set up the first Node
  cout << "Enter the first integer value ";
  cin >> number;
  listpointer = new Node;
  listpointer->loaddata(number, NULL);
  lastnode = listpointer;
  // insert the other nodes
  while(number >= 0) {
    cout << "Enter an integer value (-1 to stop) ";
    cin >> number;
    if (number >= 0) {
      temp = new Node;
      temp->loaddata(number, NULL);
      lastnode->setnext(temp);
      lastnode = temp;
    }
  }
  displaylist();
}

void displaylist() {
  Node* current;
  int currentvalue;
  current = listpointer;
  while (current != NULL) {
    currentvalue = current->getvalue();
    cout << currentvalue << ", ";
    current = current->getnext();
  }
}

//-------methods for the Node------
void Node::loaddata(int v, Node* p) {
  value = v;
  next = p;
}