Last commit with db. Switching to makdown articles representation

include/utils_op/arr.h

@@ -1,5 +1,11 @@
+#ifndef _ARR_H
+#define _ARR_H
+
 #include <string.h>
 #include <stdlib.h>
 
 void insert_to_arr(char ***arr, size_t length, char *value);
-void free_arr(char **arr, int length);
+void free_arr(char **arr, int length);
+int check_if_contains(char **arr, size_t length, char *str);
+
+#endif

include/utils_op/llist.h

@@ -0,0 +1,20 @@
+#ifndef _LLIST_H
+#define _LLIST_H
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define NUMBER 5
+
+typedef struct llist_s
+{
+    char *value;
+    struct llist_s *next;
+} llist_t;
+
+llist_t *find_item(llist_t *list, int n);
+void fill_with_arr(llist_t **list, char **arr, size_t n);
+void print_llist(llist_t *list);
+llist_t *add_to_list(llist_t **head, int pos, char *value);
+
+#endif

include/utils_op/utils.h

@@ -1,9 +1,14 @@
+#ifndef _UTILS_H
+#define _UTILS_H
+
 #include <stdio.h>
 #include <string.h>
 #include <ctype.h>
 #include <stdlib.h>
 
 void err_msg(char *msg);
-char *add_to_front(char **str1, char *str2);
+char *concat_to_front(char **str1, char *str2);
 char *get_status_message(int status_code);
-char *to_lower(char *str);
+char *to_lower(char *str);
+
+#endif