Questions tagged [static-allocation]
38 questions
0
votes
2 answers
Replace dynamic allocation with a static one
I have a project and I have to define an array of arrays of different dimensions (like a triangle) because I am not allowed to use std::vector or other container class. For this, I am using an array of pointers. Normally, I would do this:
int*…
Stefan Octavian
- 593
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- 17
0
votes
2 answers
Understanding basic dynamic allocation example
I have a very basic doute concerning dynamic allocation. Studying the tree following possible syntaxes I have been said that they all are dynamic allocations.
First:
int* px(nullptr);
px = new int;
*px =20;
Then a more concise one:
int*…
Paul
- 123
- 1
- 9
0
votes
3 answers
Pointer to array Maintain counter of elements
I have an interface which multiple classes inheritance.
class someInterface
{
virtual void someMethod() = 0;
}
class A : public someInterface
{
public:
void someMethod()
{
…
Peter
- 799
- 4
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- 23
0
votes
1 answer
c 2d array static initialization with preserved size
similar to 1D array declaration :
char arr[]={[0 ... RESERVED_CHARS-1]=' ',[RESERVED_CHARS]='\0'};
please advice how / if possible to declare such 2D array ?
#define SAY_MAX_MSG_LEN 6
#define REP_MAX_MSG_LEN 8
char *var_msg_out[][3]={\
{" Say…
Vlad
- 63
- 1
- 5
0
votes
3 answers
Where will the memory be allocated in the following piece of code?
If I declare a std::vector, where will the memory be allocated? I know new dynamically allocates memory, but the memory for the vector should be allocated statically. I want to know what happens with the memory.
typedef std::vector…
GreatDane
- 683
- 1
- 9
- 31
0
votes
2 answers
Segmentation fault on function call with two dimensional array
I have the following code:
#define MAXSAMPLES 1024
typedef int sample_t;
typedef sample_t sub_band_t[MAXSAMPLES][MAXSAMPLES];
void blah(sample_t a[][MAXSAMPLES], int u0, int v0, int u1, int v1) {
. . . .
}
int main(int argc, char *argv[]) {
…
Dronacharya
- 471
- 1
- 4
- 15
-1
votes
2 answers
difference between dynamic allocation static allocation
MY question is
In any programming language is dynamic memory allocation faster than static memory allocation?
int main(int, char**)
{
int *pa = new int; // faster than
int a; // ?
return 0;
}
karan
- 398
- 4
- 5
-2
votes
1 answer
Reinitialize dynamically allocated memory
I am dynamically allocating memory at the beginning of a for using:
Candset_t* emptycandset(void) {
Candset_t* cset;
cset = (Candset_t*)malloc(sizeof(Candset_t));
cset->size = 0;
cset->maxsize = MAXSIZE;
cset->dptr =…
aristocrate90
- 1
- 1