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This is a good solution, Thank you!

I have this piece of code:


#define NFIELDS 4

typedef union
{
int Par[NFIELDS];
struct {
int Field1;

I have tried in C. In C++ is of course the same because there are the operators overloading

In C is equivalent to use atomic types without calling atomic_load, atomic_store or atomic_fetch_add but using the standard C syntax of non atomic variables.

These 2 pieces of codes are really...

I have solved in this way:



#include <stdatomic.h>

typedef struct
{
atomic_ullong V[2];
} vectoratomic_t;

Ok, this is the code for compiler explorer try with flag -Weverything



#include <stdatomic.h>


typedef struct
{
atomic_ullong V[2];

I have this piece of code:



atomic_int Vector[2];

void Load(int *v)
{
v[0]=atomic_load(&Vector[0]);
v[1]=atomic_load(&Vector[1]);

Thank you very much for your complete answer. So for now I have:



typedef atomic_bool TMutex;

void MutexLock(TMutex *mutex)
{
while(atomic_flag_test_and_set(mutex));
}

If you use a fixed size matrix you can use:


void how(int (*array)[421][70]){
(*array)[420][69]=69;
}

Thank you for the reply. The code works but I'm not sure about the memory order of atomic_exchange and atomic_store that is memory_order_seq_cst. Is it correct for this kind of operations?
With...

I want to build a low level mutex with atomic operations but I'm not sure if it's correct. It seems to work but I'm not sure with the memory order of atomic_exchange and atomic_store. Could you help...

I'm learning c++ so it's a newbie question.

I what to put a random generator in a class because it is only used by the class.
To declare and to initialize a random numbers generator I use this...

I have 2 files, one .cpp with an array of c strings


char strings[][64]={
"One",
"Two",
"Three"};


in another .cpp file I have

Qt is not free. Does gtk have a forum for who develop gtk applications?

I need a C gui library that I can use under linux and windows with good documentation, examples and possibly a forum. What do you suggest?