Figure 1

Enter Action Code (1 for help): 1
   The action codes are:
        0 - Exit this program
        1 - Produce this help message
        2 - Add a new node to the list
        3 - Display a user-selected node
        4 - Remove a user-selected node
        5 - Show all nodes in ascending order
        6 - Show all nodes in descending order
        7 - Count the number of nodes

Enter Action Code (1 for help): 2
   Enter new string: red
   Node added
Enter Action Code (1 for help): 2
   Enter new string: green
   Node added
Enter Action Code (1 for help): 2
   Enter new string: blue
   Node added
Enter Action Code (1 for help): 2
   Enter new string: red
   Duplicate added
Enter Action Code (1 for help): 5
   List nodes are as follows:
         1 >blue<
         1 >green<
         2 >red<
Enter Action Code (1 for help): 6
   List nodes are as follows:
         2 >red<
         1 >green<
         1 >blue<

Enter Action Code (1 for help): 7
        There are 3 nodes in the list

Enter Action Code (1 for help): 4
   Enter string: red
   One duplicate removed
Enter Action Code (1 for help): 4
   Enter string: green
   Node removed
Enter Action Code (1 for help): 0
   The list still has nodes. Throw them away? y