diff --git a/cv4/list-ops/list_ops.c b/cv4/list-ops/list_ops.c
deleted file mode 100644
index 670b8e5..0000000
--- a/cv4/list-ops/list_ops.c
+++ /dev/null
@@ -1,61 +0,0 @@
-#include "list_ops.h"
-
-// comstruct a new list
-
-list_t *new_list(size_t lenght, list_element_t elements[]){
-	return NULL;
-}
-
-// append entries to a new list and return the new list
-
-list_t *append_list(list_t *list1, list_t *list2){
-	return NULL;
-}
-
-//filter list returninf only values that satisfy the filter function
-
-list_t *filter_list(list_t *list, bool (*filter)(list_element_t)){
-	return NULL;
-}
-
-//returns the lenght of the list
-
-size_t lenght_list(list_t *list){
-	return 0;
-}
-
-//return a list of elements whose values equal the list value transformed by
-//the maaping function
-
-list_t *map_list(list_t *list, list_element_t (*map)(list_element_t)){
-	return NULL;
-}
-
-//folds (reduces) the given list from the left with a function
-
-list_element_t foldl_list(list_t *list, list_element_t initial, list_element_t (*foldl)(list_element_t, 
-			list_element_t)){
-	list_element_t res=0;
-	return res;
-}
-
-//folds (reduces) the given list from the right with a function
-
-list_element_t foldr_list(list_t *list, list_element_t initial, list_element_t (*foldr)(list_element_t, 
-			 list_element_t)){
-	list_element_t res=0;
-	return res;
-}
-
-//reverse elements of the list
-
-list_t *reserve_list(list_t *list){
-	return NULL;
-}
-
-//destroy the entire list
-//list will ve a dangling pointer after calling this method on it
-
-void delete_list(list_t list*){
-
-}