C/C++ :: Linked List Search Function - Find Specified Value

Feb 9, 2014

I'm have troubles with this program that requires me to make a search through a Linked List and find a specified value. It also needs to be a template function. I've completed the rest of the program fine and everything runs ok except for the search function. Code below:

Linked.h
#ifndef LINKED_H
#define LINKED_H
#include<iostream>
template <class T>
class Linked {

[Code] ....

I have commented out my attempt at the search function. When uncommenting the function I get several errors about <template> being incorrect syntax.

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C++ :: Linked List - Recursion For Search Function

Mar 19, 2013

I have a linkedList search function given and I am having a little trouble getting it to work. I've made a few attempts with no success. Given normal search code:

template <class Type>
bool orderedLinkedList<Type>::search(const Type& searchItem) const {
bool found = false;
nodeType<Type> *current; //pointer to traverse the list

current = first; //start the search at the first node

[Code] .....

My attempt to make it a recursive search:

template <class Type>
bool orderedLinkedList<Type>::search(const Type& searchItem) const {
//bool found = false;
nodeType<Type> *current; //pointer to traverse the list
current = first; //start the search at the first node

[Code] ....

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Visual C++ :: Linked List Search Function

Feb 9, 2014

The program I have below. If you copy and paste it it should work. However, When I uncomment my search function I get lots of errors and I think it has to do with incorrect syntax of it being a template. Need to do this search function:

Linked.h header file

Code:
#ifndef LINKED_H
#define LINKED_H
#include<iostream>
template <class T>
class Linked {
private:
// Declare a structure for the list

[Code] .....

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C :: Simplifying A Simple Linked List With Search Function

Jun 5, 2013

Code:
#include <stdlib.h>
#include <string.h>
#include <stdio.h>

struct node
{
int data;
struct node *next;

[Code] ....

It fills the singly-linked list with 0 through 9 and calls a function to prompt the user to search for a number. I don't see any glaring errors, I was just wondering what could be done to simplify it or if there's anything I missed.

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C++ :: Trying To Make Search Function In Doubly Linked List But Getting Error On Runtime

Feb 16, 2013

void search(int srch) {
if (isempty()) {
cout<<"No Record Found";
} else {
node *p;
p=head;
while(p!=NULL || p->getroll_no()==srch)

[Code] ....

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C :: Linked List Search

May 7, 2013

I read an article on linked list here: C Linked List Data Structure Explained with an Example C Program

Code:

struct test_struct* search_in_list(int val, struct test_struct **prev)
{
struct test_struct *ptr = head;
struct test_struct *tmp = NULL;
bool found = false;
}

[code].....

What is "if(prev)"? Wouldn't "prev" always have the same value? Secondly, if tmp is NULL (which will be the case when the loop if(ptr->val == val) finds a match the first time it is run), is *prev assigned a NULL?

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C++ :: Search The Data In The Linked List?

Aug 6, 2014

How can I search the data? I want to get the output like this.

============================== Enter a data to search: 44 DATA FOUND! ==============================

Code:
#include <iostream>
using namespace std;
struct node {

[Code].....

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C/C++ :: Linked List Template Search

Feb 6, 2015

I have a linklist program I've written that seems to work just fine at least, it outputs the right information. However when it comes to the end and says press any key to continue, it crashes when I press a key says debug assertion error rather than just exiting. I haven't gone back and put in comments yet, I know I need to get used to commenting as I go />/>

#ifndef LIST_H
#define LIST_H
#include <iostream>
#include <cstdlib>
using namespace std;
template <class T>
class LinkList {

[Code] ....

Another bit of information. It was working without crashing when I only had the intlist functions called. When I added the doublelist is when I began getting the error however now if I remove the doubelist and go back to just having the intlist calls it still gives the error.

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C++ :: Search For Element By Name - Printing Linked List

May 2, 2014

I've got this program that I'm working on. Most of the code is from a video tutorial, but I was editing it to be able to search for an element by name. That's working fine, but suddenly the part of the program that prints out all the elements starts in an infinite loop after I input two elements, and search for one.

Here's what I've got:

[code#include <iostream> usingnamespacestd; struct node { int number; string name; node *next; }; bool isEmpty (node *head); char menu (); void insertAsFirstElement (node *&head, node *&last, int number); void insertSorted(node *&head, node *&last, int number); void remove(node *&head, node *&last); void showList (node *current); void showByName (node *current, string name); bool isEmpty (node *head) { if (head == NULL) { return true; } else { returnfalse; } } char menu () { char choice;

[Code] .....

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C :: Binary Search Tree In Linked List

Feb 25, 2014

Code:

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
struct bst {
int val, level;
struct bst *left, *right, *parent;

[Code]....

The code above is supposed to be a binary search tree. The main outcome for this program is to display the tree in C each time the user inserts or deletes a value.

Since I am a newbie in C programming, I first tried creating a code that would simply display the values in the tree after a user inserts and deletes, before I proceed to displaying the exact tree.

But when I run it the following output shows:

And when I try to insert another value, It won't display anything and won't respond to any keys pressed.

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C++ :: Difference Between Binary Search Tree And Linked List

Oct 30, 2014

What is the difference between BST and linked list? Or are BST implemented through linked list?

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C++ :: Linked List Search - Access Violation Reading Location 0xCCCCCCCC

Apr 12, 2014

I am getting an Unhandled exception at 0x00CB569E in AusitnHorton_Chapter17_7.exe: 0xC0000005: Access violation reading location 0xCCCCCCCC.

And, It puts a little yellow arrow at this line:

cout << nodepointer->value << " ";//print current node

when I try to run this program.

//Program:Make a ListNode and simple linked list class. Test the linked list class by adding varous numbers to the list and then test for membership. Then include a search function that returns the position of x on the list, if not found return -1.

#include <iostream>
#include <iomanip>
#include <string>
#include <cmath>
#include <cstring>
#include <fstream>
#include <cctype>
using namespace std;

class LinkedList

[Code] ....

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C :: Linked List Programming To Find Cartesian Coordinate

Jan 7, 2014

I am very much new to C programming. However, I have an assignment regarding linked list.

Problem Statement is: Using linked list store the coordinates of four cartesian points and then find the coordinates having longest distance from its origin.

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C++ ::  Find Duplicates Before Inserting Into Doubly Linked List

Mar 8, 2013

I have a text file that needs to be read by command line arguments. The text are all numbers and can have multiple numbers on one line separated by a space. I cannot use an array or sort the numbers.So say I have a text file, listNums.txt:

12
473 8 29
30 1
8
248 17 55
29 84
5

Basically I need to read one number, find out if its odd or even by dividing by 2, search the odd or even doubly linked list that it would go into to see if its in there, if its not then add it to the bottom of the list.

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C++ :: Use Find Function To Search For A Line In Text File

Oct 28, 2013

I'm trying to make a program that will search for a line in a text file using a non default delimitor at the start of the line. An example line in the text file would be as follows:

F Mary Smyth, 19, United Kingdom

I have been able to use the find function to search for and return the 'F' character but would like it to then display the whole corresponding line. Is this possible with the find function?

ifstream readFromFile("data.txt");
string Destinations[1] = {"F "};
string data;
while(!readFromFile.eof()){
getline(readFromFile,data);

[code]...

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C++ :: Search And Find The Shortest Queue And Search After Some Condition?

Mar 7, 2013

I am trying to implement a Task scheduler where i have n number of tasks. The Idea behind my task scheduler is that in a loop of queues of a vector, task should get enqueued to the shortest queue among the loop of queues, which is done by the following code.

#include <vector>
#include <queue>
std::vector<std::queue<int> > q
int min_index = 0;
task t // implemented in the other part of the program

[Code] ....

Next i am trying to extend this paradigm to reduce the overhead time of the scheduler, Instead of searching the shortest queue every time, search after some condition ie. search the shortest queue after 5 tasks gets enqueued to the shortest queue.

i need to do something like this

#include <vector>
#include <queue>
std::vector<std::queue<int> > q
task t // implemented in the other part of the program
while(q[min_index].size()!=q[min_index].size()+5) // check whether current min_index queue's size is increased 5 more times if not goto enqueue

[code].....

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C++ :: Linked List - No Matching Function

Jul 3, 2013

I have a problem with the parameters of two of my functions:

typedef List<int> Dlist;
template<class T>
Dlist concat(Dlist L1, Dlist L2) {
Dlist L;
elem<T> *temp1, *temp2;
temp1 = L1.Start_ptr;
temp2 = L1.Start_ptr;

[Code] ....

Here are the errors:
no matches converting function `concat' to type `class Dlist (*)(class List<int>, class List<int>)'
error candidates are: template<class T> Dlist concat(Dlist, Dlist)

no matching function for call to `concat(Dlist&, Dlist&)'

I can't understand what the compiler is trying to tell me.

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C :: Create Function That Allows Insertion Anywhere In Linked List

Feb 18, 2013

I'm trying to create a function that allows insertion anywhere in a linked list...here is what I have so far but am a bit confused on where to go from here

Code:
void llAddAtIndex(LinkedList** ll, char* value, int index) {
LinkedList* newNode = (LinkedList*)malloc(sizeof(ll));
newNode = *ll;
LinkedList* prevNode = (LinkedList*)malloc(sizeof(ll));

[Code].....

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C :: Delete Function In Singly Linked List

Jan 20, 2014

Code:
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
struct node {
int data;
struct node *next;

[Code] ....

The above code is a SLL. I have a problem in my deleteNode function. I can't delete the exact data on the list. How to do this right?

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C :: Linked List Program Not Recognizing A Function

Oct 22, 2014

I'm writing a linked list program for class that has a simple text based menu and I believe I am nearly done, it just wont recognize my "count" function as a function and I don't know why. The error comes up at line 70.

Code:

#include <stdio.h>
#include <stdlib.h>
typedef struct node {
int datum;
struct node *next;
} node_t;

[code]....

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C++ :: Sort Function For Linked List Program?

Oct 7, 2013

I'm having trouble getting my sort function to work,

void Linkedlist::sort(int num)
{
node *q;
node *a;
int input=num;

[Code].....

I get a crash and I've narrowed it down to the last if statement. Also this function is meant to handle new members after 1 member has been added.

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C/C++ :: Linked List Insert Item Function

Oct 14, 2014

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].....

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C :: Function To Return First Element Of Linked List Queue

Feb 23, 2013

I am trying to write a function to return the first element of a link list queue. I am not real sure how to implement this. I have include a copy of the struct for my Node & queue.

Code:

typedef struct event_Node {
void *data;
double arri_time;
double serv_time;
double depart_time;
double start_o_serv;

[Code]...

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C/C++ :: Add Function To Tail Of A Doubly Linked Circular List

Nov 30, 2014

I have a function that I would like to add to tail. It is not correct.

template<class T>
void DoublyLinkedCircularList<T> :: addToTail(T element) {
DoublyLinkedNode<T>* head;
DoublyLinkedNode<T>* temp;
temp->element = element;

[Code] .....

How do I fix it?

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C++ :: Linked List Set Function - Forbids Comparison Between Pointer And Integer

May 5, 2014

I'm trying to write a function called 'set' that sets the value of the i'th cell to val on my linkedList, and then returns the previous contents. I am stuck on it due to compiling errors:

This is my Node struct:

#ifndef NODE_H
#define NODE_H
#include <iostream>
template <typename T>
struct Node {
friend std::ostream &operator <<(std::ostream &os, const Node<T> &node) {

[Code] ....

The following is my set function:

template <typename T>
T set(Node<T> *head, int i, const T &val) {
for(int n = 0; n < i; n++)
if(head == val) {
val = i;
} return val;
} #endif

When I try to call it in the main() I get these errors:

node_utils.h: In function ‘T set(Node<T>*, int, const T&) [with T = int]’:
node_demo.cpp:26:38: instantiated from here
node_utils.h:161:2: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
node_utils.h:162:3: error: assignment of read-only reference ‘val’

So, I understand that I can't compare head & val on my if-statement -- But what do I do?

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C++ :: Doubly Linked List That Will Store Strings - Delete Function

Sep 23, 2014

I am creating a doubly linked list that will store strings, for example:

struct node{
string data;
node* next;
node* prev;
};

node* head; //first element from left to right (global)
node* tail; // last element from left to right (global)

And here is the function:

void deleteNode(int n){
struct node* temp1 = head;
if (n == 1){
head = temp1->next;
free(temp1);

[Code] .....

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