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POLinked list issue with insert
primarykey
Id
2804320
data
AcceptedAnswerId
2804457
AnswerCount
4
ClosedDate
CommentCount
2
CommunityOwnedDate
CreationDate
2010-05-10T16:14:41.210
FavoriteCount
0
LastActivityDate
2013-03-23T10:55:56.190
LastEditDate
2013-03-23T10:55:56.190
LastEditorUserId
488657
OwnerUserId
230884
ParentId
0
PostTypeId
1
Score
1
ViewCount
514
LastEditorDisplayName
text
Body
The problem appears with the insert function that I wrote. 3 conditions must work, I tested b/w 1 and 2, b/w 2 and 3 and as last element, they worked. <hr> EDIT; It was my own problem. I did not realize I put MAXINPUT = 3 (instead of 4). I do appreciate all the efforts to help me becoming a better programmer, using more advance and more concise features of C++. Basically, the problem has been solved. <hr> Efficiency is not my concern here (not yet). Please guide me through this debug process. Thank you very much. <pre><code>#include<iostream> #include<string> using namespace std; struct List // we create a structure called List { string name; string tele; List *nextAddr; }; void populate(List *); void display(List *); void insert(List *); int main() { const int MAXINPUT = 3; char ans; List * data, * current, * point; // create two pointers data = new List; current = data; for (int i = 0; i < (MAXINPUT - 1); i++) { populate(current); current->nextAddr = new List; current = current->nextAddr; } // last record we want to do it sepeartely populate(current); current->nextAddr = NULL; cout << "The current list consists of the following data records: " << endl; display(data); // now ask whether user wants to insert new record or not cout << "Do you want to add a new record (Y/N)?"; cin >> ans; if (ans == 'Y' || ans == 'y') { /* To insert b/w first and second, use point as parameter between second and third uses point->nextAddr between third and fourth uses point->nextAddr->nextAddr and insert as last element, uses current instead */ point = data; insert(()); display(data); } return 0; } void populate(List *data) { cout << "Enter a name: "; cin >> data->name; cout << "Enter a phone number: "; cin >> data->tele; return; } void display(List *content) { while (content != NULL) { cout << content->name << " " << content->tele; content = content->nextAddr; cout << endl; // we skip to next line } return; } void insert(List *last) { List * temp = last->nextAddr; //save the next address to temp last->nextAddr = new List; // now modify the address pointed to new allocation last = last->nextAddr; populate(last); last->nextAddr = temp; // now link all three together, eg 1-NEW-2 return; } </code></pre>
Tags
<c++><linked-list>
Title
Linked list issue with insert
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1. PO
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1. USBart
UserOwnerUserId
1. USCppLearner
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1. COExcuse the stupid questions: What do you mean by b/w? And what does insert(()); mean? Regards
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 USSimon
2. COb/w means between and insert(()) mwans put any parameter stated above. for example, insert((point->nextAddr)).
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 POLinked list issue with insert
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 USCppLearner

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