Memory Questions

My little c program is iterating through the working directory's contents and there is no problem with that, but i checked it with valgrind and

I am new to programming, and was introduced with the sizeof operator of c. playing with it, i found the following interesting

Say i have this struct: typedef struct list_object list; struct list_object { char* name; struct stat stats; };

This is a code from my programming with c course that prints a list, using adt structs. typedef struct list{ int data;

In what way is the following code faulty or undefined behaviour? i suggested

I'm trying to understand how can i create a c program that declares an "array of strings" whose size is unknown at the time of

I am making an ios app that can be compared to instagram with a feed of videos (no images). i have a table showing custom table view cells, each

So i am trying to split memory addresses into their page number and offset components by masking the hex numbers. but to cover a decent variety of

I using valgrind to find a leak of memory. i wrote a function "prefix_to_string" to concatenate any two strings, but when i use the

Question-> #include<stdio.h> int main() { int a,*b,**c,***d; int x;

I am a bit of a beginner in c language. i was trying out a task of dynamically reallocating memory as the input comes through(although for this

I'm working on a project which must be coded in standard c. (not c++.) a while ago, i wrote the below program, writes the contents of different

My program is supposed to accept input via stdin and store the string into an array of size size. my problem occurs when i

Recently i've been programming a lot in c, due to an influx of free time. as c (in my opinion) is a very difficult language to pick up and learn,

My program takes an arbitrary number of words at runtime and stores them in a dynamically-sized array of words. currently, my program runs

Can someone explain to me why when i dynamic allocate memory with calloc or malloc i declare: int *arr

Note: i am not 100% confident with memory allocation and how it works, but i understand it for the most part. when i see

Would computing the difference in the addresses of the stack variables not be the way to determine whether the stack grows upwards or

I wrote a little test code that allocates memory and just seeing the result on valgrind when i free the pnumber variable. #include

I know that each time i use malloc or calloc i have also to free that memory, but in this specific case i can't understand when free the memory

I understood, that __builtin_object_size should give information about the size of an object, if it can be determined at compile time

I've been trying to develop with devkitarm and only notable guide is coranac's tonc, everything's fine but i can't get what it means when some

How can i copy n different words in a single string using strcat? this is my code but doesn't work. the size of the single words is 40.

How can i fix this code in a way that it prints the words in the array? moreover this is the right way to dynamically allocate memory for

Does the below code is safe to use? somehow i think this not right way to do. i know a better way is malloc(), realloc(). but i want to understand

Why when i have to declare a pointer to a node (head) i also have to allocate memory with malloc or calloc for it? i saw

I want to allocate memory inside a function with malloc and then return the buffer. then i want to be able to strcpy a

I am writing mixed c++/c code and making use of exec* family of c functions. consider the following code: char **argv

I've been searching for a while what are for square-brackets in an addressed-of pointer, but i continue without understanding it. here are the

Function int load(const char *filename, int ***ptr, enum save_format_t format) should load data from binary or text

My cs50 speller function finally works, but when entering it into check50, it says there is a memory error with valgrind. here is my unload

I get the following error below after calling realloc void* realloc(sizeof(char)100); the error:

A c function can modify more than one variable by an illusion of pass-by-reference (a pass-by-value of address as explained by

Int main() { int i= 0; printf("i value is %d\n",i); scanf("%c", &i); // i am giving an input of 255

I am concerned about memory leaks in this program. specifically, the check_if_pal procedure increments the str pointer

I have been implementing vanilla version of a merge sort in c. in a sorting section itself, which is a separate function, i created a temporary

For the following code i have the following defintion: typedef struct string {char* data; int length;} string; if

What is the order one has to read the bits from the bin value? having for e.g.

I've had a look at some other similar questions and examples but i'm stumped. my goal is to open a very large text file (novel sized), allocate

I've been stuck with this problem for some days, and still haven't manage to fix it. basically, i want to do a remote syscall from an attacker

There is no code for this question at all..just a simple question... as strings return their memory location\address but do int do the same or

Int main(){ int* index = (int*)malloc(n*sizeof(int)); if(index == null){ printf("memory not allocated.\n");

I'm tired of this tom-foolery occurring during runtime , although i'm sure we all are, when our programs screw up at runtime in the most obscure

In the below code , each location can hold 32 bit signed data. so, why doesn't the value

Can you tell me where i have to put the free() function for the array "arr" in this code? i tried to put free(arr) before the last

I have an m.c: extern void a(char*); int main(int ac, char **av){ static char string [] = "hello ,

I build a simple cuda kernel that performs a sum on elements. each thread adds an input value to an output buffer. each thread calculates one

I was told by an instructor that p = (int*)malloc(5 * sizeof(int)) is not dynamic memory allocation and that

The following program: #include <stdlib.h> int main(void) { char *my_str = malloc(42 * sizeof(char)); return 0; }

I am attempting to edit a structure's member value(s) within single/multiple threads on windows, consider the following example:

#include <stdio.h> #include <stdlib.h> #include <unistd.h> int main(int argc, char *argv[]) { size_t sz =

I'm working with openmp and would like to share variable that's declared inside scoped block between threads. here's overall idea of what i'm

If i want to create a structure initialization functions that return a pointer to the initialized structure members, will the allocated memory to

Ok so let's start with the most obvious solution: memcpy(ptr, (const char[]){'a', 'b'}, 2); there's quite an

Is it possible to share a single 'god' instance among everyone that links to this code, to be placed in a shared object? god* _god

What are the most common memory optimizations in csharp, dotnet 2.0. wanted to see if there common things that people may not be doing by default

Online examples of correct use of the volatile keyword

My website is entirely flash based, it moves around a 3d model which was given to me as chunks of video that i've converted to flv files. i'm

I'm trying to get the value of at an address in memory in my microcontroller. the address is at 0x1fff7000 and that's the start of

I'm trying to read a basic shader line by line from an external file i wrote for a c program. in the file there are two shaders: vertex and

I'm trying to keep track of the number of writes per physical page in the file "proc/pid/pagemap".but the file is binary, and the size

I have boiled down an issue i'm seeing in one of my applications to an incredibly simple reproduction sample. i need to know if there's something

I'm trying to make a program which crosses binary numbers. the problem is with the cross function. it accepts two binary sequences

I'm currently building a java app that could end up being run on many different platforms, but primarily variants of solaris, linux and

I'm having trouble interpreting and debugging the valgrind output for a c program i just finished from an online course (nand2tetris) that is now

In c language, when we don't know the size of the data we're going to hold in the array. generally, we specify more size than required. does that

I have 2 or more processes accessing to a shared memory. i want to create a global variable in each process and then mapping the address of this

Seriously, i've trawled msdn and only got half answers - what do the columns on the task manager mean? why can't i calculate the vm usage by

I'm a bit confused when i see code such as: bigbox := &bigbox{} bigbox.bubblegumscount = 4 // correct...

Assume you have to query the prices of like 100 items (in the example i will query just 2) that are unique, which would be the fastest (measured

Consider the following example class: class foo { public: void* const arr_; foo() = delete; foo(const size_t size,

Recently i have been having issues with firefox 3 on ubuntu hardy heron. i will click on a link and it will hang for a while. i don't

I'm writing the memory manager for an application, as part of a team of twenty-odd coders. we're running out of memory quota and we need to be

I'm struggling to figure out memory coalescence in cuda. in order evaluate the performance difference between coalesced and uncoalesced memory

I am brand new to c++ and trying to better how understand memory is allocated and stored in class methods. lets say i have the following code:

I'm learning c++ now and i have some misunderstandings i've created 2d dynamic array, but i can't fill it i've got error in 44 line like: access

I'm making a shell simulator for an operating systems course homework. we were asked to add a "history" command that when typed, should

Say i've got a class like this: class test { int x; someclass s; } and i instantiate it like this:

I'm trying to compress data to improve the space complexity, but i'm not sure if i'm incorrectly compressing data or incorrectly measuring the

I want to write a function that can take a destination pointer to allocate memory and copy a source into it. if i try to allocate memory

I'm a programming noob. i want to allocate a struct but since the size of my attributes are already defined, how would i use malloc() in this

I'm using recyclerview to list around 120 layouts that include 1 imagebutton,1 textview and 1 button. the initial memory usage when i first launch

I've a recycler view which does download list items. i can think of two ways to update the state of a row at nth pos - i can

I am currently in a project and we need for some reason use h2 database. i would like to do an api in this project and i want to use laravel,

#include<iostream> using namespace std; int main() { int buf[2]; int *p=new (buf) int(2); int *q=new (buf+1)

I want to store my image directory in memory, then load the images into a numpy array. the normative way to load images that are

I have this piece of code, where i have an array of constituencies and i wish to deep copy the whole array into a new array. now too me, it seems

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

Edit: i think i've understood how this concept works, this is my code void delete_duplicate(char* str) { if (str == null) {

Is there is any chance of memory leak in static variable like in class public class date extends linearlayout{ private static

I have read that using asynctask as an inner class of an activity will cause memory leaks because it won’t let the activity get garbage

Well this is the error i get: out of memory: java heap space. please assign more memory to gradle in the project's

I'm trying to save a file to a specific location on the server disk (using multer), but this location name is related to data i

What i'm trying to do here is to read lines 3 to 32 and 35 to 44 from a csv file. when i read the lines, i use strtok to separate the values and

I want the following code to accomplish to store the content of the file it reads in a variable content without leaking memory:

I have problems with accessing the 2d array in a typedef from a other function over a pointer, even if i allocate the array in heap!

I have a massive amount of requests and i need to run more or less 200 to 600 of said requests simultaneously, but no more than that amount. at

How do you close the connection to a redis memory store from a cloud function when the cloud function instance terminates? (i believe to close i

I have an application with three activities. here is my activity lifecycle: activity1 -> activity2 -> activity3. all my activities are use

I have a recyclerview with a header with a viewpager. since there is no way to make a viewpager flip views automatically, i've added a runnable