[prog] C++ - linked list and segmentation fault
Kathryn Hogg
kjh at flyballdogs.com
Tue Apr 8 12:26:13 EST 2003
I won't give you all the answers but one thing to look at is:
> int main(){
> INVENTORY_ITEM* pStart;
> createFile (pStart);
Here you create a pointer pStart and pass it into createFile() but pStart
has not been set to anything so it's contents are undefined.
> void createFile(INVENTORY_ITEM *pStart){\
<snip>
> while (!in.eof()){
> in >> temp.quantity;
> in >> temp.price;
> current=new INVENTORY_ITEM;
> *current=temp;
> current->nextItem=NULL;
> p=pStart;
> while ((p!=NULL)&&(strcmp(current->itemCode,p->itemCode)<0))
> p=p->nextItem;
Uh oh, here you are deferencing the pointer that was passed but it's
contents are undefined, so this is a likely place to core dump;
--
Kathryn
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