Deleting occurrences of substring in string in singly linked list C -

i have little problem out here.

i must program singly linked list stuff, , hadn't got problems since now. stuck on deletion occurrence of substring given after function call in authors name in linked list.

the program snippet:

void list_delete_element(kniha_t* inode) {     kniha_t *actualnode = inode;     kniha_t *prevnode = null;     kniha_t *tempnode = null;      uchar_t needle[100];     uchar_t haystack[100];     ushort_t occur = 0;      scanf("%s", &needle);     lower_string(needle);     while(actualnode != null)     {         copy_string(haystack, actualnode->autori);         lower_string(haystack);         if(search_string(haystack, needle))         {             occur++;             if ( null != prevnode)             {                 prevnode->next = actualnode->next;             }             else             {                 inode = actualnode->next;             }             tempnode = actualnode;             actualnode = actualnode->next;             free(tempnode);             tempnode = null;         }         else         {             prevnode = actualnode;             actualnode = actualnode->next;         }     }     printf("deleted sa %hu nodes\n", occur); } 

, stuff must load in it, ignoring ---:
http://pastebin.com/npver3y6

problem is, works ( :d )...until sweep occurrences.

example:
when type in pra, must delete nodes contains "pra". works charm...but when type "p", tells me, x occurrences freed, stay in buffer somewhere, because can print whole list out again!

thankful, can give me advice.

your list_delete_element should take kniha_t** can delete head node , prune linked list. current code, delete node, other functions doesn't know because inode not changed.

you can update code

void list_delete_element(kniha_t* *inode) {     kniha_t *actualnode = *inode;     ...         if ( null != prevnode)         {             prevnode->next = actualnode->next;         }         else         {             *inode = actualnode->next;         }     ... }