import java.io.*;
import com.mw.io.*;
import structure.*;

class ListElement {
    String data;
    ListElement nextElement;
}

class ListBuilder1 {
// Program to build a singly-linked list, from a series of
// words typed by the user, and then display it.
// The class ListElement is used to supply individual elements.

	public static void main (String args[]) {

      SystemInput sysIn = new SystemInput();
      ReadStream r = new ReadStream();
      String s;      
      
      ListElement head = null;        // pointer to the first element
      int count = 0;                  // size of the list
      ListElement member = null;      // next member to be inserted
      ListElement previous = null;    // previous member inserted
      
      System.out.println("Enter a series of words, followed by Command-D");
      s = r.readString();
      while (! r.eof()) {
         // link s to the tail end of the list
         member = new ListElement();
         member.data = s;         // NB: member.nextElement == null
         if (head == null) 
            head = member;
         else 
            previous.nextElement = member;
         count++;
         // and prepare for linking the next line of input 
         previous = member;     
         s = r.readString();
      }
      
      // now display the list
      System.out.println("The words entered are:");
      member = head;
      while (member!=null) {
         System.out.println(member.data);
         member = member.nextElement;
      } 
      System.out.println(count + " words were entered.");     
	}
}