Question

What I would like to do is have the first pass go through to check deg and put it into lowest to highest…Then do the second pass and do the coef and put that lowest to highest.

I’m getting segmentation fault…I was wondering if the two if statements is even possible

Poly merge(Poly* plist1,Poly* plist2){
  Term **pp;
  Poly merged,list1,list2;
  merged = new_Term(); //function for new term in another file
  list1 = *plist1;
  list2 = *plist2;
  pp= &merged;
  while(list1 != NULL && list2 != NULL){
    if(list2->deg < list1->deg)
      {
        *pp = list1;
        list1 = list1->next;
        (*pp)->next = NULL;
      }
    else
      {
        *pp = list2;
        list2 = list2->next;
        (*pp)->next = NULL;
      }
    if(list2->coef < list1->coef)
      {
        *pp = list1;
        list1 = list1->next;
        (*pp)->next = NULL;
      }
    else
      {
        *pp = list2;
        list2 = list2->next;
        (*pp)->next = NULL;
      }
    pp = &( (*pp)->next );

  }
  if(list1 != NULL)
    *pp = list1;
  if(list2 != NULL)
    *pp = list2;

  *plist1 = NULL;
  *plist2 = NULL;
  return merged;
}

Answer 1

NVM I think I found my problem…I needed to make it into an if…else if statement and delete one of the

else
  {
    *pp = list2;
    list2 = list2->next;
    (*pp)->next = NULL;
  }

blocks

Thanks anyways for those fast responders

Update:

Also I needed to change

if(list2->deg > list1->deg)

To

if(list2->coef < list1->coef)