An exception is getting thrown several levels deep in TABLEDEF's construction. I know why the exception is being thrown and how to fix it. That's not the issue. The problem is that the exception handling is unwinding objects on the stack and calling TABLEDEF's destructor, which in turn calls every other destructor in the hierarchy all the way to std::string which is the base class. string's destructor is calling delete which is causing an abend attempting to release memory that is not allocated. I know the underlying string was in fact allocated and correct.
Before I fix the cause of the exception being thrown, I want to find why string memory is apparently getting released twice. I've checked all the constructors in the chain and all are passing objects as const reference to the next level. All the destructors are virtual.
how to find the cause of the memory being released twice? I've tried various strategies in the debugger to no avail, including setting a memory access breakpoint on the underlying string object.
Note: The try/catch logic is one level up from this function.
I just finished a program on how to Identify any kinds of conic sections like circle,hyperbola, parabola and ellipse.
I dont about the other codes, they work but I think they are wrong.
I need to finish so that I can proceed to another program, I need to find what is the wrong in this equation, I dont know why the answer for eccentricity and others are different If I solved it manually.
It's all pretty simple and straight forward, but oftentimes (not always) when the weapon hits the asteroid, the program crashes. If for example I turn off the delete main_weapon[i] and main_weapon.erase(main_weapon.begin()+i); the program works perfectly, but of course the bullets go right though the asteroid object, which is not what I want. It's only the weapon deletion which is causing no end of trouble.
Basically, I have a LIST that is saved in a CSV file, and I need to remove a particular record after using the search feature (which populates the fields from the CSV file... i.e. ID, Name, etc...).
I am able to get the details that are in the text fields by using a search feature. This is then put in:
logic.remove(tempIndividual)
In class myLogic.cs, then I have this method:
this.individual.Remove(tempIndividual)
Upon debugging, I can see that tempIndividual is populated with the correct data. However, I need to remove this data from the CSV file. Am I on the right track, or totally off? Maybe it is not complete, cause I can't get to the part where it actually removes the data from the CSV, or at least I'm not sure if .Remove is able to do it on its own.
I am writing a program to list the 8 planets, then you select which planet you want. it gives you the mass of the planet, the radius, then you use the mass and radius of the planet to find the surface area (sphere formula) and the density of the planet. Along with those options, you have to add and delete a planet from the list and then sort them alphabetically. All i am having trouble with is the adding and deleting part. The code the adding and deleting from the list would go in cases 9 and 10.
I'M TRYING TO DELETE FROM THE END OF A LINKLIST...Actually I delete the last node but the problem is that I lost the end of the list, in other words my list leaved of pointing to NULL.I really don't know how to fixed, (it was more easy to delete from head)
Currently I am implementing the A* algorithm in C++. I have chosen to use a hybrid of a '2D vector grid' and two 1D pointer vectors to specific places in the '2D vector grid'. I have chosen to do it this way, so I can access the nodes using coordinates and also for iterating over the appropriate nodes(rather than the whole '2D vector grid').
In the below examples I have not included the full code because I deemed it irrelevant to the question.
vector <int> CInGame::AStarAlgorithm(vector<vector<bool>>& resistanceMap, int startX, int startY, int targetX, int targetY, int cutOff) { vector <int> returnVec; vector <vector<CNode>> twoDimNodes; vector <CNode*> openSet; vector <CNode*> closedSet;
[code].....
The error is:
_BLOCK_TYPE_IS_VALID(pHead->nBlockUse)
do I need to free the pointers or is it done automatically? If not then how would I do this?
Is this the right codes for deleting a recoed on the text file.
void dlte(){ string line, recorddate; cout << "Please Enter the date of record you want to delete: "; cin >> recorddate; ifstream myfile; ofstream temp; myfile.open("herald.txt");
I made a vector of pointers and the problem is that I have trouble deleting the pointers in the vector. I used to simply do vector.clear() or vector.erase() however it does not clear the actual memory. And I tried something like this:
std::vector<Foo*> Vector; std::vector<Foo*>::iterator i; for (i = Vector.begin(); i < Vector.end(); i++) delete *i;
If I have a linked list, how can I delete it at the end of my program to free the memory taken up. I know I have to use delete but not sure how to use it in this case.
Here is the code that I have:
#include <iostream> #include <cstdlib> using namespace std; struct Numlist { int num; //Number Numlist * next; //Pointer to the next node
I'm creating a program that holds three arrays one for the persons last name, one for the points scored and one for the player number, now I've got all the arrays and everything done but I'm not sure as to how I'm going to delete an entry for multiple arrays.
I'm having trouble deleting a character inputted by the user recursively..
1- Should I be doing it this way where it returns the character one by one to the console?
2- Is there a way actually rebuild the string to "delete" these occurances of the key?
//This program deletes a character inputted by the user recursively #include <iostream> using namespace std; char find (char *a, char key)//Function gets passed array (but makes it a pointer) and key
i am writing a program to list the 8 planets, then you select which planet you want. it gives you the mass of the planet, the radius, then you use the mass and radius of the planet to find the surface area(sphere formula) and the density of the planet. along with those options, you have to add and delete a planet from the list and then sort them alphabetically. All i am having trouble with is the adding and deleting part. the code the adding and deleting from the list would go in cases 9 and 10.
I was assigned to modify Game Lobby code. All the data can be saved in txt file and can be displayed when running the code..How can i remove or delete the certain lines of a txt file when running the cmd?.. I cant program it to be able to delete certain lines but i manage to program to delete the entire data, which is not what i want..
Here's the code so far...
#include <iostream> #include <fstream> #include<vector> #include<cstdio> #include<iomanip> #include <string> using namespace std; class Player { public: Player(const string& name = ""): m_Name(name), m_pNext(0) {}
I'm writing a bunch of classes like Form, Button, etc. All these are derived from a base Object class. I want to make these objects auto-delete, so I only have to declare the new keyword, and the program will clean them when necessary. I understand the implications of dereferencing, I just have a couple of questions about my code.
I have added a static variable of std::map type called m_Dynamic. I have overloaded the new and delete keywords (within the Object class) to keep the m_Dynamic map up-to-date. This prevents objects created on the stack from being deleted.
The object itself can then be deleted via the base Dispose() method. Or methods such as Destroy() can be added in derived classes and call upon Object::Dispose() themselves. This can be overloaded, etc, but eventually will be removed from the public view. I only have it here for testing.
From what I can tell everything "works", though I'm uncertain that the object is being correctly deleted.
Though, my main concern is that when a derived class such as Circle calls Dispose() which in turns fires delete this. Does it free() the sizeof(Object) or does it correctly free() the sizeof(Circle)?
Are there any other things I should be vary of? I only just started playing with new/delete overloading yesterday.
Write a program having structure which hold address fields as Name, Address Line 1, City, State, ZIP. Program should able to hold 50 entries of address. Application should have feature/choice option to add, delete and Search address by name .
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:
#include<stdio.h> //bookData structure struct bookData { int recordNum; char description[ 15 ]; int booksBought; double bookCost;
[code]...
I am able to add records and show records, no problem. But when I go to delete a record, it crashes immediately after inputting the record number I want to delete. I don't see why. I've set it up exactly like the example in my book, having of course changed the variable names for my program. Does it have something to do with the pointer?
