how to check if something exists in a struct linked list?

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04-04-2011

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how to check if something exists in a struct linked list?

can someone provide an example of a struct linked list, where it has strings as its values, and then how do I check if a specific string (say called buffer) exists in the list of structs?

i dont understand how to make a copy of it to check with
this is what i have

Code:

                        
                        // CHECK IF ITEM EXISTS IN THE ITEM LIST
                        check=0; tmp_item_list=item_list;
                        while(tmp_item_list) {
                            if (strcmp(tmp_item_list->number,buffer)==0) { 
                                tmp_buffer0[0]='\0';
                                strcat(tmp_buffer0,tmp_item_list->number);
                                strcat(tmp_buffer0," ");
                                strcat(tmp_buffer0,tmp_item_list->name);
                                strcat(tmp_buffer0," ");
                                strcat(tmp_buffer0,tmp_item_list->current_price);
                                strcat(tmp_buffer0,"\n");
                                send_message(i, tmp_buffer0); check=1; break; 
                            }
                            tmp_item_list=tmp_item_list->next;
                        }

i want to make a copy because if i dont then
tmp_item_list=tmp_item_list->next;
will screw it up

also this wont work, because somehow when i iterate through the list, it seems the list repeats again...

this compiles fine with no errors/warnings

---------- Post updated at 10:13 PM ---------- Previous update was at 09:00 PM ----------

nvm i got it now

omega666

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