C/C++ :: Error C2512 With Template Linked List?

Oct 29, 2013

I have made a Template Class that I named ArrayList(to coincide with ArrayLists in Java)and it works for the primitive types string, int, double, etc.; however, when I try making the ArrayList with a class object instead of a primitive type it gives:

"error C2512: 'ArrayList<Missile>::listCell' : no appropriate default constructor available"

And I am not sure why. My ArrayList Class is defined by:

template <class type> class ArrayList{  
    struct listCell{
        type dataStorage;
        listCell *next = nullptr;

[Code] ....

The error takes place in the add method of the ArrayList class:

void add(type toAdd){
        size++;  
        if (head == nullptr){
            head = new listCell();
            head->dataStorage = toAdd;

[Code] .... 

only when I use a class object instead of a primitive storage type.

The class "Missile" has been defined and compiles successfully, and the code calling the add method is here:

    ArrayList<Missile> missiles;
    Missile *missile;  
//Constructor and Deconstructor not shown  
    void fire(){
        missile = new Missile(xPos, yPos, true);
        missiles.add((*missile));
    }  

why this causes an error?

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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++ :: Removing Element From Template Linked List?

Nov 11, 2013

I have been trying to implement a way to remove a post from a list of posts implemented with a template doubly linked list. I have thought that the best way to do this might by operator overloading, but I have digressed. I have just thought of using a isEqual that checks equality, but when trying to implement i'm getting weird errors.

This is within my class wall, which is a linked list of wall posts, getPostInfo is within the class WallPost.

bool isEqual(WallPost const & a, WallPost const & b)
{
if(a.getPostInfo() == b.getPostInfo())
return true;
else
return false;
}

I have several instances of the error "void illegal with all types" on line 3. It also is complaining about a not being a arithmetic, unscoped enum, or pointer type. I am assuming that it is because my getPostInfo function is a void.

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C++ :: Linked List Pass By Address Error

Jul 24, 2014

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

[Code]....

How is this not working? just the add & display function.

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Visual C++ :: New Linked List Error - Undeclared Identifier

May 30, 2013

I dynamically allocate a new list in the recMergeSort function which should run a constructor but when it get to the functions that use it, I get error C2065: 'otherHead' : undeclared identifier. I have tried setting it to NULL and it didn't work. I even copied the default constructor to a set function and I still get the errors.

Code:
template<class Type>
void unorderedLinkedList<Type>::recMergeSort(nodeType<Type>* &head) {
otherHead = new nodeType<Type>;
if (head !=NULL)
if (head->link != NULL)

[Code] ....

wonder if I'm sending the correct data type. Here is the heading of the functions that I'm using from the book.

Code:
void unorderedLinkedList<Type>::divideList(nodeType<Type>* first1,
nodeType<Type>* first2)

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C++ :: Doubly Linked List - Circular Dependency Error

May 15, 2013

When compiling the source I get the following error

"pms_program.h:54:56: error: expected declaration specifiers or ‘...’ before ‘CourseType’"

the code you are looking for in pms_course.h ( there is a circular dependency between pms.h , pms_course.h and pms_program.h)

function prototype AppendProgram ( part of doubly linked list )

I have attached the full course code.

As much as I like I cannot change the structure of the startup code ...

please see attached zip file for the entire source code.

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C/C++ :: How To Make A Linked List / Error - (current) Is Not Declared In This Scope

Feb 10, 2015

I am trying to make a linked list. When I compile my code, I get an error saying 'current' is not declared in this scope. I don't understand because I have declared in the first line of my functions body. The variable is local to the function so I don't understand what the problem is.

#include <iostream>
#include <cstdlib>
using namespace std;
class LinkedList {
public:
LinkedList() // default constructor makes an empty list

[code].....

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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/C++ :: Print Single Linked List Backward With Functions / Classes - Error Message Regarding Header Files

Oct 11, 2014

I'm trying to print a single linked list backward with functions/classes. I have created the main file and 3 header files. But I'm getting an error on one of the header files, linkedListIterator after adding #include "linkedListType.h". It says that "linkedLlistType.h" is calling itself. And when I try to run it, I get an error of "too many header files." I have tried changing the headers many times, but nothing seems to work.

.cpp file:

/*(Printing a single linked list backward) Include the functions reversePrint and recursiveReversePrint, as discussed in this chapter, in the class linkedListType. Also, write a program function to print a (single) linked list backward. (Use either the class unorderedLinkedList or the class orderedLinkedList to test your function.)*/

#include "linkedListType.h"
#include "orderedLinkedList.h"
#include "linkedListIterator.h"
#include <iostream>
using namespace std;
struct nodeType

[Code] ....

header files:
[URL] .... (error in this header file)
[URL] ....

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C++ :: Use Of Class Template Requires Template Argument List

Nov 6, 2013

Error1error C2955: 'DoubleLinkedListInterface' : use of class template requires template argument listdoublelinkedlist.h10
Error2error C2244: 'DoubleLinkedList<T>::DoubleLinkedList' : unable to match function definition to an existing declaration doublelinkedlist.cpp7

Error3 .cpperror C2244: 'DoubleLinkedList<T>::~DoubleLinkedList' : unable to match function definition to an existing declaration 12

.h

#pragma once
#include "DoubleLinkedListInterface.h"
#include "Node.h"
#include <iostream>

[Code]....

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C++ :: Creating A Linked List Of Common Elements From Two Other Linked Lists

Apr 29, 2013

I'm trying to write a function that takes two linked lists and creates a third one with only the common elements.

It assumes the first list (the caller) has no dups, but it doesn't seem to be working. The program doesn't crash, it just hangs when it is supposed to display L3 (the third list)..everything else runs and is displayed fine.

template <typename T>
LList <T> LList <T>:: common (LList <T> &B)//common fct
{
Node <T> *hunter1 = Head;

[Code]......

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C :: Insert Linked List Into Another Linked List

Jun 29, 2013

I have a linked list comprised of chars like so...

Code:

node1 - "p"
node2 - "o"
node3 - "p"

I need a function that will take in three perameters...node *replaceChar(node *head, char key, char *str)Stipulations of this function. head is the head of the list, 'key' and 'str' are guaranteed to contain alphanumeric characters only (A-Z, a-z, and 0-9). str can range from 1 to 1023 characters (inclusively). So if I call this function with these perameters..

Code:

node *head == /*the head of the list to be examined*/
char key == "p"char *str == "dog"The new list will look like this...
node1 - 'd'
node2 - 'o'
node3 - 'g'
node4 - 'o'
node5 - 'd'
node6 - 'o'
node7 - 'g'

All instances of 'p' were replaced with 'dog' I have a toString function which takes in a string and converts it to a linked list and returns the head. So assume that you can call the function on str = "dog" so...

Code:

toString(str) == /*this will return the head to the list made from the str*/

If it's unclear what my question is...I am stumped on how to write the replaceChar function the one that takes in three perameters..

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C :: Linked List / Adding Element To Beginning Of List

Dec 31, 2014

Code:

// Write a function called insertEntry() to insert a new entry into a linked list.

Have the procedure take as arguments a pointer to the list entry to be inserted (of type struct entry as defined in this chapter), and a pointer to an element in the list after which the new entry is to be inserted.

// The function dveloped in exercise 2 only inserts an element after an existing element in the list, thereby prenting you from inserting a new entry at the front of the list.

(Hint: Think about setting up a special structure to point to the beginning of the list.)

#include <stdio.h
struct entry1 {
int value;
struct entry1 *next;
};

[code]...

This is a working version of the exercise, but I don't think I'm doing what's asked. I was able to add an element to the beginning of the list using an if statement, not creating a special structure that points to the beginning of the list. How would I go about creating a special structure that points to the beginning of the list to add a new element at the beginning of the list?

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C++ :: Template Definition Error

Apr 16, 2013

I have an issue converting VC++6 code to VC++ 2010. The following template function definition is not allowed by the new compiler:

template <> void AFXAPI DelElems <CBrush*> ( CPen** objects, int count ) {
for ( int i = 0; i < count; i++, objects++ )
if (*objects)
delete *objects;
}

All errors refer to the header of the template function:

- syntax error : '<'
- syntax error : missing ';' before '<'
- 'DelElems' : illegal use of type 'void'
- unrecognizable template declaration/definition

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Jan 27, 2015

I was working on template and found the linker error while compiling the code.

Below is the code:

Code: //Template1.h: Header file where template define
#ifndef __Template1_H__
#define __Template1__
template <typename T,typename T1> class A
{
T a;
T1 b;
public:
A(T ,T1 ) ;

[code].....

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C++ :: Array Error Using Template Class

Dec 3, 2014

How to assign the array in object Q to the 12 months, Dec through Jan. I then have to sort the array and display the strings from Jan to Dec.

// main.cpp

#include <iostream>
#include <string>
#include <cstring>
#include <ctime>
#include <algorithm>
using namespace std;
// Declare template class
template <class T, int n>

[Code] ....

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C/C++ :: Template Class With Error 2664

Feb 2, 2014

I'm trying to get the command pattern for template classes down. I'm just having a hard time implementing one part of the code. I can't figure out why both the method being passed and the type accepted are not the same type.

SimpleCommand class
template <class Receiver>
class SimpleCommand : public Command {
public:
typedef void(Receiver::*Action)();
SimpleCommand(Receiver *r, Action a) :

[code].....

And their instantiation

MyClass *receiver = new MyClass;
Command *aCommand =
new SimpleCommand<MyClass>(receiver, &MyClass::Action);
aCommand->Execute();

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C++ :: Linked List Delete List?

May 30, 2013

I'm working on a linked list and was wondering how this looks to everybody else for a deleteList function.

void deleteList(Node* head)
{
Node* iterator = head;
while (iterator != 0)

[code].....

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C++ :: Invalid Use Of Template Name ND Without Argument List

Dec 31, 2013

#ifndef BSTCLASS_H_
#define BSTCLASS_H_
#include <string>
using namespace std;

[Code]....

-'ND' is not a type; when I use it as a parameter
or
-invalid use of template name 'ND' without argument list; when I use it as a return type.

On some lines I try access the elements inside of 'ND' variables and I get errors saying that those elements don't exist for the given pointers.

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C++ :: Trying To Add Template Class To Maintain List

May 12, 2013

I wrote this menu-driven program that maintains a list of restaurants. The program runs fine as it is right now, but my problem is I need to create a new array template class to maintain the list of restaurants, and when a new restaurant is added it must be created dynamically.

I'm having a hard time figuring out what exactly I need to do for this. Templates confuse me allot and I've read all the sections on templates here and in my book, but i'm still lost. The dynamic memory part is throwing me off as well.

main.pp

#include <iostream>
#include <string>
#include <iomanip>
#include "Restaurant.h"

[Code]....

Restaurant.h

#pragma once
#include <iostream>
#include <string>
#include "FTime.h"
using namespace std;

[Code]....

Restaurant.cpp

#include "Restaurant.h"
#include <iostream>
#include <string>
#include <iomanip>
#include <sstream>
using namespace std;

[Code]...

FTime.h

#pragram once
#include <string>
using namespace std;
//class FTime
class FTime {
friend ostream& operator<<(ostream& out, const FTime& obj);

[Code]...

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C++ :: Array 2D - Class Template Has Already Been Defined Error

Apr 6, 2014

I got an array class, but I'm getting this error:

Error1error C2953: 'Array2D' : class template has already been defined

Here's the code:

#include "Tools.h"
template <typename T>
class Array2D {
T** arr;
int xSize;
int ySize;

[Code] .....

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C/C++ :: Error C2995 Function Template Has Already Been Defined

Apr 10, 2014

I have been trying to compile this program for 3 days. he subject is my error. I know it has something to do with including the cpp file with the header file however my textbook says this is what I must do in order to use templates. I have tried 2 compilers Code Blocks and Microsoft Visual C++ express 2010.

Here is my code:

header file
#pragma once
#ifndef _NODE
#define _NODE
template<class ItemType>
class Node {

[Code] ....

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Jul 18, 2014

Recently I tried a project template from infragistics

Infragistics Windows Forms -ProjectManager

every time I open the design form it desply this message.

What should I do to resolve it.

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Nov 29, 2012

The below code compiles without error using VS 2012 but with g++ 4.1.2 I get this error:

Code:
main.cpp: In function 'int main(int, char**)':
main.cpp:37: error: no matching function for call to 'StringHelper::stringToNumeric(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'

Here is the code:

#include <string>
#include "boost/lexical_cast.hpp"
using boost::lexical_cast;
using boost::bad_lexical_cast;
class StringHelper {

[Code] ....

This is part of a larger program so in reality StringHelper has more static functions but this example does produce the error the same as the code when in the larger program.

To get it to compile under g++ I had to assign the return value from substr() to a string and pass that string to stringToNumeric. Why do I have to do this for g++ and not VS? Do I have something wrong with my template function that g++ is calling out and VS is not?

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Visual C++ :: Template - Adding Elements To List

Jun 9, 2013

I'm doing a homework aasignment on templates, and i have to build a list. The problem starts when i am trying to add elements to the list. For instance if i chose to add 5 different elements (1,2,3,4,5) the output will be (5,5,5,5,5).

Code:
void add_back(T t){
Node* tmp = new Node;
tmp -> m_data = &t;
if(m_head == NULL) {

[Code] ....

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C++ :: Invalid Use Of Template (Array) Without Argument List

Jan 24, 2014

I'm getting a template error.

Error

Code:
/data/data/com.n0n3m4.droidc/files/temp.c:92:3: error: invalid use of template-name 'Array' without an argument list
Array::Array(int s): size(s)
^
compilation terminated due to -Wfatal-errors.

Code:

// headers
#include <iostream>
#include <utility>
#include <cctype>
// stuff we need from namespace std
using std::cout;
using std::cin;

[Code] .....

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