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POTrouble with double-linked list
primarykey
Id
5970909
data
AcceptedAnswerId
5971318
AnswerCount
1
ClosedDate
CommentCount
11
CommunityOwnedDate
CreationDate
2011-05-11T21:36:32.250
FavoriteCount
0
LastActivityDate
2015-07-24T16:42:03.980
LastEditDate
2015-07-24T16:42:03.980
LastEditorUserId
4370109
OwnerUserId
636728
ParentId
0
PostTypeId
1
Score
0
ViewCount
319
LastEditorDisplayName
text
Body
<p>So I got this task to make a program which will allow the user to enter a number of integer elements in a double-linked list and I have to delete the ones which can be divided (remainder 0) with the sum of their digits.</p> <pre><code>#include <stdio.h> #include <stdlib.h> #define NEW(t) (t*)malloc(sizeof(t)) typedef int info_t; typedef struct element { info_t info; struct element *next; struct element *prev; } node; typedef node* nodep; void insert(nodep l, info_t x) { nodep t = NEW(node); t->info=x; t->next=l->next; l->next=t; t->prev=l; } void printList(nodep l) { nodep t=l->next; while(t!=l) { printf("->%d", t->info); t=t->next; } printf("\n"); } void deletedividable(nodep l) { nodep t=l->next; nodep temp; while(t->next!=l) { int temporary=t->info; int sum=0; while(temporary>0) { sum+=(temporary%10); temporary/=10; } if(!(t->info%sum)) { temp=t->next; t->next->prev=t->prev; t->prev->next=t->next; free(t); t=temp; } else t=t->next; } } int main() { // declaring a leader node nodep list = NEW(node); list->next = list; list->prev = list; printf("Enter elements:\n "); int a; //if the input isn't a number the loop will exit while(scanf("%d", &a)) { //elements input function call insert(list, a); } // print list function call printList(list); // delete elements which are dividable with the sum of their digits deletedividable(list); printList(list); return 0; } </code></pre> <p>The problem is, after the deletedividable(list); function call, nothing is printed when the second printlist is called and I can't seem to locate the problem, some of the pointers must be getting screwed up, but I'm not sure which ones. Any help would be much appreciated.</p>
Tags
<c><list><doubly-linked-list>
Title
Trouble with double-linked list
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1. PO
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1. PTQuestion
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UserOwnerUserId
1. USalabroski
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