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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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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Apr 11, 2014
I want to maintain a list. which will update at regular interval. so I thought to with linked list. Earlier I have used linked list.
Code:
typedef struct
{
short nwkaddr;
unsigned char macaddress[8];
}device_t;
}
[code]....
This program is giving many errors. I tried lot to fix it. If I fix one then other bug is arising. for that I did't mentioned what bug i got.Main Issue is while (curr->next->list != NULL) this is giving segmentation fault if i add element second time
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Apr 24, 2013
I'm about to begin work on an exercise that requires me to maintain a list of the variables inside a c source file. I'm trying to figure out how I'm going to pluck out the variable names from all the other noise. My first thought would be to count any word that isn't a keyword or other type of grammar syntax, such as parenthesis, brackets, semicolons, etc. right?
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Sep 16, 2014
Assignment on Linked List : Write a program that maintains student academic records using a linked list. The data structure is to be implemented as an array of structures. The fields of the structure are as follows:
• Student ID - this should be unique
• Last name
• First name
• Middle initial
• Course
• QPA
• Address
The program shall be menu driven. This means that the actions that the user can do with the program is govern by choosing an option. The menu shall look like this:
Student Records
1. Add student Academic Record
2. Edit student first name
3. Delete student record
4. View student record (by last name)
5. View all student records
6. Exit
For the edit and delete, the search value should be the student ID. What's lacking on my codes is for the 3rd option. What should I must do with it? These are my codes
#include<stdio.h>
#include<conio.h>
#include<string.h>
#include<stdlib.h>
#define M 10
#define FLUSH while(getchar() != '')
[Code] .....
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Apr 18, 2012
I was making a template list class, and using it to make list of objects of my own class.It works fine with integers, but not with other classses.
template <typename T>
class CList {
public:
struct Node {
T data;
Node* next;
[code]....
While in AddElement(), it gives error - Default constructor not available.
template<typename T>
bool CList<T>::AddElement(T t) {
bool result = true;
if (head == NULL) {
[code]....
what is wrong here.
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Dec 5, 2013
I'm trying to implement a simple template array class, but when i came into the operator< i actually have to use a template :
my code is something like :
template<typename _Type, std::size_t _Size>
class array {
public :
[Code] ......
but i am having an error of shadows template param 'class _Type' is it w/ the name conflict between the array template parameter and the function template parameter ?
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May 27, 2013
I have a generic template class with another template in one of its types. Now I want to specialize one of its methods for a particular (template) class, which leads to a compile error, however.
Here is the example:
#include <stdio.h>
template<typename Type>
class Obj1 {
public:
void ID() { printf("Object 1, size = %zu
[Code] .....
GCC ends with:
:35:27: error: type/value mismatch at argument 2 in template parameter list for ‘template<class Type, template<class> class O> class Foo’
:35:27: error: expected a class template, got ‘Obj2<Type>’
What is wrong with the specialization? Can it even be achieved and how (if so)?
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Nov 2, 2014
how I want the code to look. Only problem is it doesn't work (Line 11). I have some experience with templates but I'm not a pro.
Basically I want the "Channels<3>" to be a type that I can use to specify a Cable with similar to vector<float/int> it would be Cable<Channels<2 or 3>>.
What have I messed up with the syntax?
#include <iostream>
#include <vector>
using namespace std;
[Code].....
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Feb 9, 2015
I have a class like this
PHP Code:
template<class X>
class A {
X m_x;
public:
X* foo();
X* bar();
//others are not related to X
};
I would like to get rid of
PHP Code: template<class X>
For class level but still use it for members. Like this
PHP Code:
class A {
X m_x;
public:
template<class X>
X* foo();
template<class X>
X* bar();
//others are not related to X
};
However, I am still stuck at
PHP Code: X m_x;
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Oct 12, 2013
Let me put it into the code snippet:
/**
This class build the singleton design pattern.
Here you have full control over construction and deconstruction of the object.
*/
template<class T>
class Singleton
[Code]....
I am getting error at the assertion points when i call to the class as follows:
osgOpenCL::Context *cxt = osgOpenCL::Singleton<osgOpenCL::Context>::getPtr();
I tried commenting assertion statements and then the debugger just exits at the point where getPtr() is called.
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Oct 7, 2014
How to initialize a static member of a class with template, which type is related to a nested class?
This code works (without nested class):
#include<iostream>
using namespace std;
struct B{
B(){cout<<"here"<<endl;}
};
template<typename Z>
[Code] ,....
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Dec 9, 2014
I'm making a minimal spanning tree class that inherits a graph class, both are templated. This is my mstree.h so far:
#ifndef _MSTREE_H_
#define _MSTREE_H_
#include "graph.h"
namespace MSTreeNameSpace
[Code]...
and I keep getting these errors:
mst.h:9:25: error: expected template-name before ‘<’ token
class MST : public Graph<T>
^
mst.h:9:25: error: expected ‘{’ before ‘<’ token
mst.h:9:25: error: expected unqualified-id before ‘<’ token
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Nov 30, 2013
I am trying to pass a class as a type to a template class. This class's constructor needs an argument but I cannot find the correct syntax. Is it possible?
Here is an example of what I described above. I did not compiled it, it is for illustrative purpose only. And of course argument val of the myData constructor would be doing something more useful than simply initializing an int....
template <class T>
class templateClass {
templateClass() {};
[Code]....
My real code would only compile is I add the myData constructor:
myData () {};
and gdb confirmed that it is this constructor that get called, even with dummy(4).
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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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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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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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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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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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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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Oct 16, 2014
Write a program that maintains a database containing data, such as name and birthday, about your friends and relatives. You should be able to enter, remove, modify, or search this data. Initially, you can assume that the names are unique. The program should be able to save the data in a fi le for use later.
Design a class to represent the database and another class to represent the people. Use a binary search tree of people as a data member of the database class. You can enhance this problem by adding an operation that lists everyone who satisfies a given criterion.
For example, you could list people born in a given month. You should also be able to list everyone in the database.
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Mar 9, 2013
In the existing code,fork has call parallel to create process.my job is to store all the process id into vector so that we can verify the status of the jobs. I was able to save all the jobs but as the callback happen so I have lost my all value which was store into vector.
How can i maintain variable between multiple process.
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Feb 4, 2014
std::cout << "Hello C++ programmers!" << std::endl;
I am trying to create a LinkedList (and then, an ADT stack; // yes, I cannot use the STL stack because the teacher won't let me), and I am getting some weird error when I create a ListNode and declare LinkedList (which has the ListNodes!) a friend of it.
Here is my header-file code for both classes:
ListNode.h
#ifndef LISTNODE_H
#define LISTNODE_H
#include "LinkedList.h"
[Code]...
The errors I am getting are:
error: 'LinkedList' is not a class template
I have tried forward-declaring LinkedList in the ListNode.h file, but I get this error:
error: 'ListNode' does not name a type
Are there any other possible solutions to this problem; // without having to resort to crazy stuff like having a .h file #include a .cpp file, or even declaring and defining ALL OF MY CODE in the .h files???
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Mar 3, 2013
I have this class templates And This UML.I have to write this function +operator=(source: Array<ElemType, SIZE>): Array<ElemType, SIZE> but I do not know how to start the declaration / or start the function. I have to return a template but I do not know how to do it,
UML
Array<ElemType, SIZE>
-elements: ElemType[SIZE]
+Array()
+Array(source: Array<ElemType, SIZE>)
+operator=(source: Array<ElemType, SIZE>): Array<ElemType, SIZE>
+operator==(other: Array<ElemType, SIZE>): Boolean
+operator!=(other: Array<ElemType, SIZE>): Boolean
<<L-value>>+operator[](index: Integer): ElemType
<<R-value>>+operator[](index: Integer): ElemType
[code]....
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Feb 3, 2013
I want to use a template function of a class.
This is my code:
#include "Comparison.h"
#include <iostream>
using namespace std;
int main(int argc, char** argv) {
Comparison c;
[Code] ....
But I get the error message:
main.cpp:10: undefined reference to `int Comparison::max<int>(int, int)'
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Mar 22, 2013
refer to the code below, the attribute class is created with the value type and default value, but why it doesn't work for std::string?
#include <string>
#include <iostream>
using namespace std;
[Code].....
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