I'm still trying to insert a node at a passed index in a linked list. This is my function, it doesn't work but i feel like it's close.
Code:
void llAddAtIndex(LinkedList** ll, char* value, int index) {
LinkedList* newNode = (LinkedList*)malloc(sizeof(LinkedList));
newNode->value = value;
LinkedList* prevNode = *ll;
for(int i = 0; i < index; i++){
[Code] ....
I'm trying to make a function that lets me pass an index and a string and will insert the string at that index in the linkedlist... here is so function i have so far:
Code:
typedef struct node {
char* value;
struct node* next;
} LinkedList;
void llAddAtIndex(LinkedList** ll, char* value, int index) {
[Code] .....
I have a problem with inserting a node between two nodes.
Code:
#include <stdio.h>
#include <stdlib.h>
struct listelem {
int nbr;
struct listelem *next;
[Code] ....
I'm trying to figure out how to insert a node into a linked list at a particular location based on a time..I have this declared outside of everything globally.
Code:
struct aTime {
char name[LENGTH];
int time;
struct aTime* next;
};
struct aTime* head = NULL; And then this function that is used to add nodes (aTime structs) to a linked list. It adds the first node fine, but not subsequent ones. I think this is because I have while p-> != NULL but it is always going to be null when the function is called since I create a new aTime struct. So I guess my question is how, after one struct has been added at the beginning, do I point to the head node and traverse the list, insert a node, and make sure everything is still linked? Do I need another temp aTime struct?
Code:
void add_time(char name[LENGTH], int seconds)
{
struct aTime *p;
p = (struct aTime *) malloc(sizeof(struct aTime));
if (head == NULL)
{
strcpy(p->name, name);
p->seconds = seconds;
}
[code]....
I was having problems changing the value of my head node I passed it as an argument as head which would be the address. The parameter was defined as struct node *head. like this
bool deleteNode(struct node *head, struct node *delptr)
I tried manipultaing pointer values to change head node value but it did not work. I saw some code online which used pointer to pointers(in code below) to change head node value it worked I dont fully understand why. Would like better understanding of why.
Would also like to know why the argument call needed &head instead of just head.
remove = deleteNode(&head,found); opposed to remove = deleteNode(head,found);
#include "stdafx.h"
#include<iostream>
struct node{
[Code].....
I create A program that will Add and Display the Link List but I have problem on it. If I add it will inserted in the prev node not in the next node. Here's my source code.
#include <stdio.h>
typedef struct Member {
int id;
char name[256];
struct Member *next;
[Code] ....
I'm trying to make a function that lets me pass an index and a string and will insert the string at that index in the linked list...
Code:
typedef struct node {
char* value;
struct node* next;
} LinkedList;
void llAddAtIndex(LinkedList** ll, char* value, int index) {
[Code] .....
I have a program and function i'm having an issue understanding. Here is what it's doing in the main.
int main() {
orderedLinkedList<MemberDO> memberList;
MemberDO::readFromFile("Member.dat", memberList);
return 0;
}
So it is creating a linked list object using the MemberDO class type which has a int, string, char and double. Then it will call the readFromFile static function in the MemberDO. So this is where my problem is I have this function
void MemberDO::readFromFile(char *fname, orderedLinkedList<MemberDO>& list) {
}
How do I read in each individual data member from the input then create a new MemberDO object and insert the objects into the linked list specified in the second argument list?
Here is the MemberDO class declarations
class MemberDO {
private:
int key;
string lastName;
char firstInitial;
double dues;
[Code] ....
I'm having trouble inserting a node in a nth position into a double linked list. My for loop is giving me an exception handler error and I can't link the node after the new node is inserted back to the new node. Here is my code,
void mylist::insertpos(const int &pos, const string &s, const int & c) {
listnode* temp1 = new listnode(s,c);
temp1->s =s;
temp1->next = NULL;
[Code]....
I attached my header file incase you need to see the definitions for my objects.
It is suppose to insert items in Linked List in sorted ascending order and no duplicates are allowed.The code complies but it creates duplicates out of order.
ListRetVal CSortedList :: InsertItem(const ListItemType &newItem)
{
ListItemNode* newLNode = new ListItemNode();
newLNode->value=newItem;
newLNode->next=NULL;
[Code].....
I have a struct with some select student information. My wish is to be able to have the user type in a surname from the list, and for that entry to be deleted. However I am slipping up for some reason.
Here is the start of my program showing my struct:
Code:
#include <stdio.h>
#include <string.h>
#define NAME_LEN 30
#define LINE_LEN 80
struct record {
[Code] ....
I get the following errors in my while loop as well as the if statement below that loop:
-invalid operands to binary !=
-invalid type of argument '->'
This is what I have at the moment which works as I would like but wondering if there is a better way of handling? Currently just making sure I know linked-lists well enough.
Code:
void push_to_end( node_t * headRef, int val ) {
node_t * tail = headRef;
node_t * new_node = malloc( sizeof ( node_t ));
while( headRef != NULL ) {
[Code].....
I'm trying to impliment a simple singly linked list, then allow a user to add a new node. I have mocked up a siimple example to illustrate my point using Linked Lists...
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
struct node {
int x;
struct node *next;
[Code] ....
So I have done things similatr to this in C# and Java but not in C. There maybe some parts of this I'm sure some will disagree with in terms of buffers,overflow etc. but it's just the linked list part that I am interested in at the moment, I am only doing it like this because when it works, I will be extracting the working linked list stuff into another program that can deal with its I/O etc.
I have tried to comment as best I can to demonstarte my intentions and understandings per line of code. The add function needs to add a node of value x that the user has input, and add that to the end of the list - I'm sure that the print function is not doing all its supposed to do...
If p is a pointer pointing a node to be deleted, then what's wrong in the following code:
cout << "Do you want to delete this record? (y/n) ";
if (getch() == 'y' || getch() == 'Y'){// Delete record.
if (p == *ph){//If first node is to be deleted.
*ph = (*ph)->next;
delete p;
[Code] .....
I have to write a program which has the user be able to enter a specific value at a specific position of the linkedlist, replacing that node with the user defined value
EX: Enter the value 5 at 2nd node, which will override the old value at the 2nd node with the new one
I am getting a compiler error which terminates my program right after the user presses the return key after he/she has given a position to change the value
Error: Unhandled exception at 0x013C50C1 in Linked(1).exe: 0xC0000005: Access violation reading location 0x0000812B.
I am not going to show the whole code as the problem resides solely on the insert function:
void TheNode::insert(double num, int choice) {
int post = 0;
MyNode *ptr = new MyNode;
(*ptr).value = num;
MyNode *previous = head;
MyNode *current = head->next;
[Code] .....
I have a function that append node to a linked list like this:
struct ListNode{
int value;
struct ListNode* next;
};
void appendNode(struct ListNode* head, int num){
[code] ....
when I use it, the head in main() does not change its address and it's still pointing to NULL. Why??
Still toying with my self-coded linked list class and now another question: should I delete each node of my class with the delete in the class destructor or is it done automatically when the main() function ends?
View 4 Replies View RelatedHow to remove node from linked list. I am trying to implement this in a file record to remove data from struct..I dont know how addressing in linked list work for structs;
#include <iostream>
#include<fstream>
#include<cstring>
#include<cstdlib>
using namespace std;
struct node{
int val;
[Code] ....
segmentation fault
How to randomly insert certain numbers into a linked list with 10 nodes. Meaning I want to put for example numbers 1 5 10 15 20 25 30 35 40 50 in random locations in the linked list.
View 1 Replies View Relatedis this correct? I used this sorting with numbers i don't know if it is the same with strings. When I run it, there are no errors detected, but when i try to view it, the inputs does not appear.
void add(node **h, node **t){
node *temp, *ptr;
char s[20];
temp = (node*) malloc(sizeof(node));
printf ("-INSERT-");
printf("Fruit: ");
scanf("%s", temp->fruit);
[Code] .....
I am having trouble adding a second node to a doubly linked list. I define my list as follows:
Code:
typedef struct Node {
char command[256];
int length;
struct Node *prev;
struct Node *next;
} userInput;
}
[code]...
Now, when I iterate back through my list (I want to start at the tail and work my way towards the head), I can only ever get the 1st node to print, then the 2nd node is garbage, which means, to me, that I've linked something wrong.
While I know that linked lists seem to be a fairly common problem area among beginner C programmers, most examples that I have come across abstract the sorting of a linked list to a separate function which is sadly not what I am trying to do.
The code below is my attempt to have the nodes inserted into their correct place so that once all nodes have been inserted they are already in a sorted order.
Code:
int main(int argc, char *argv[])
{
struct node_t* dict_head;
struct node_t* traversor;
struct node_t* newnode;
int list_size = 0, insert_key, search_key, delete_key, x;
char insert_word[WORDLEN];
/*Opening the dictionary file provided by the command line argument */
FILE *fp;
fp = fopen(argv[1], "r");
[Code]....
The problem is as follows. When you provide it with input in which the first word scanned is any other word than that which would be placed at the front of the list, it works as intended. For example.
7 world
0 ant
3 kodak
1 best
6 the
2 is
Produces ant -> best->is->kodak->best->world
However, swapping ant and world in the above input gives:
world->best->is->kodak->best->world
In regards to why I have my head node set as a node without a word or a key, it was suggested that I make it so that the first node inserted is set to be the head of the list and then changed as sorting required, yet this caused only additional problems.
I was trying to write a function in C to delete a node(only from the middle) from a Singly Linked List. I wrote one but not sure if the code will work fine under all test conditions. I have tested it and shows no error so far.
Code:
void deleteAt(struct node *root, int number){
while(root->link != NULL) {
if(root->link->item == number) //checks if the next node is the element to be deleted {
root->link = root->link->link; //points the link of the element to be deleted to the element before the element to be deleted
}
else
root = root->link;
} }
Or is there a better way to do this?
I need to delete the Nth node from a doubly linked list. I know I just cant delete it out right. I have all the goodies including a templetized node class. This is the code we're given:
template <typename T>
void doublyLinkedList<T>::deleteKthElement(const int item) {
}
It accepts an int, and should go to the Nth node and delete it.
I am trying to delete a node from the end of a Linked List but I have some problems. Every node has it's unique code. Here is what I do:
1. Ask the user for the unique code of the node.
2. Ask him if he wants to change the data in it or delete the whole node.
3. If he chooses to delete it, I do this:
//let's say that temp1 points to the node
List *temp2 = temp1;
temp1 = temp1->next;
delete temp2;
And it's just not deleting the node.
i am trying to develop a doubly linked list class. I became stuck at a few of the functions as well as the main.cpp file. i have to insert a character sentence "TRICK OR TREAT" spaces included. I am stuck on the display and the listsize functions and im unsure if my insert has the head node in it. The function parameters were given to us and most of this code was given from a single linked list.
//node.h
#pragma once
class Node
{
publi
[Code].....
