typedef struct node* ptrType;
struct node
{  char    Item;
   ptrType Next;
};  // end struct

void WriteString(ptrType StringPtr)
// ---------------------------------------------------------
// Writes a string.
// Precondition: The string is represented as a linked list 
// to which the pointer StringPtr points.
// Postcondition: The string is displayed. The linked list
// and StringPtr are unchanged.
// ---------------------------------------------------------
{
   if (StringPtr != NULL)
   {  // write the first character
      cout << StringPtr->Item;


      // write the string minus its first character
      WriteString(StringPtr->Next);
   }  // end if
}  // end WriteString