// linklist.cpp
// linked list
#include <iostream>
using namespace std;
////////////////////////////////////////////////////////////////
struct link //one element of list
{
int data; //data item
link* next; //pointer to next link
};
////////////////////////////////////////////////////////////////
class linklist //a list of links
{
private:
link* first; //pointer to first link
public:
linklist() //no-argument constructor
{ first = NULL; } //no first link
void additem(int d); //add data item (one link)
void display(); //display all links
};
//--------------------------------------------------------------
void linklist::additem(int d) //add data item
{
link* newlink = new link; //make a new link
newlink->data = d; //give it data
newlink->next = first; //it points to next link
first = newlink; //now first points to this
}
//--------------------------------------------------------------
void linklist::display() //display all links
{
link* current = first; //set ptr to first link
while( current != NULL ) //quit on last link
{
cout << current->data << endl; //print data
current = current->next; //move to next link
}
}
////////////////////////////////////////////////////////////////
int main()
{
linklist li; //make linked list

li.additem(25); //add four items to list
li.additem(36);
li.additem(49);
li.additem(64);

li.display(); //display entire list
return 0;
}