#ifndef LISTS_H
#define LISTS_H


#include <stdio.h>
#include <stdlib.h>


struct lnode{						
  char *content;
  struct lnode *next;						
};							

typedef struct lnode *List;				

extern List						
list_add(const char *, List);	

extern int 
list_length(List);

extern int
list_index(const char *, List);

				


#endif /*  LISTS_H */