Questions tagged [struct]
A keyword in various programming languages whose syntax is similar to or derived from C (C++, C#, Swift, Go, Rust, etc.). Use a specific programming language tag to tag questions involving use of a `struct` as syntax and semantics can be language dependent. Keyword defines or declares a data type composed of other data types. Each member of a struct has its own area of memory (as opposed to a `union` whose members share a single area of memory).
struct
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Can't put values together into struct that is initiated by pointer and malloc [duplicate]
Just a simple struct called person, inside I need to store name and age. I'm trying to dynamically allocate memory for my struct.
Without using pointer:
#include <stdio.h>
#include <stdlib.h&...
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Get values from a struct in an array in ColdFusion
I have an array of a struct that I need to access values like this: every new array, it should just add comma, I tried looping over an array and then struct, but trying to see if there is any easy way
...
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Get templated struct without knowing initial template arguments
I am looking for a way to get a specified templated struct from the custom Node classes I am building without having to static_cast or dynamic_cast when I get the pointers. What ways can I use to ...
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In structs, why is initializing to 0 not allowed but initializing to 1 is valid code
#include <stdio.h>
struct temp{
unsigned int zero_bit : 1;
unsigned int first_bit : 1;
};
// struct temp_1{
// unsigned int zero_bit : 0;
// unsigned int ...
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Trying to call a struct member function from another struct member function [duplicate]
I am trying to write a 6502 emulator, and am a bit of a noob with C++ (I normally deal with C), but I was wondering how to call a member function to a struct from another member function of a struct (...
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Struct and Pointers: Please help me understand this line of code
Please help me understand what does the last line does:
int PCKT_LEN = 8192;
char buffer[PCKT_LEN];
struct iphdr *ip = (struct iphdr *) buffer;
struct udphdr *udp = (struct udphdr *) (buffer + ...
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What is the maximum number of entries a array can in a Spark column can hold?
I've created a struct with the data of some columns combined. Large numbers of these structs now occur for my unique identifier values. I want to combine these structs into an array using collect_list....
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Picked structs in rust
Is it possible to have a picked struct in such a way that the type checker doesn't have a problem with it?
Coming from TypeScript:
// Considering a main object type containing all fields:
interface ...
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Issue converting struct to parquet using xitongsys/parquet-go ( runtime error: invalid memory address or nil pointer dereference )
The timestamp in my struct is causing the following error:
runtime error: invalid memory address or nil pointer dereference
The struct is:
type MyTs struct {
time.Time
}
func (myts *MyTs) ...
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Can't understand this C syntax. Designated initialization of an array of structs?
Trying to learn the nuances of C, though I was doing well until I found this:
#define SOKOL_IMPL
#define SOKOL_GLES3
#include "sokol_gfx.h"
#include "sokol_log.h"
#include "...
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C code for solving a 15-puzzle gives a segmentation fault when it tries to show the paths for each update to the puzzle
I have a code that is supposed to show the paths in solving a 15-puzzle after showing the initial state and goal state. However, while it does show the initial state and goal state, it gives a ...
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Why doesnt my program execute whenever i declare a struct? [closed]
I am working on the project euler problem 81: https://projecteuler.net/problem=81
I am trying to read a text file containing a matrix of numbers, load this into a two dimensional array, then declare a ...
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Why is it considered okay to use structs to represent MMIO registers in embedded system firmware, but not bit fields?
In embedded system firmware, it's common to represent multiple memory-mapped registers of a peripheral using a struct, under the assumption that compiler's code generation will follow a particular ...
- 3,337
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Rust lifetimes in structs [duplicate]
Why is it not working?
struct Test<'s>(&'s mut i32);
impl<'n, 's: 'n> Test<'s> {
fn new(i: &'s mut i32) -> Self {
Self(i)
}
fn cast(&'s mut self) ...
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Using free on nested structs makes program crash
I was recently exploring ll the oop features of C, when i came to this issue. I want to create a game engine with C, so i use nested structs to organize ewerything. But when freeing the memory, the ...
