C / C++ / MFC

#include <stdio.h>

struct testStruct_s {
    int dummy;
    int* array;
};

struct testStruct_s testStructArray[] = {
    { 0, (int[]){0, 1, 2, 3, -1}},
    { 0, (int[]){0, 1, 2, 3, 4, -1}}
};


int main()
{
  for (int i=0; i<sizeof(testStructArray)/sizeof(testStructArray[0]); ++i)
  {
    printf("dummy = %d\n", testStructArray[i].dummy);
    for (int k=0; testStructArray[i].array[k] != -1; ++k)
      printf("array[%d]=%d\n",  k, testStructArray[i].array[k]);
    printf("\n");
  }
}

sizeof(testStructArray[0].array)

• C99 compilers support it.
• Your compiler suopports it even in C89 mode.

Quote:

Unfortunately I have very little knowledge about compilers and I don't know what C89 and C99 are

Quote:

What I'm worried about is that my code won't compile in the future if we move to a different compiler

CPallini wrote:

It's time to learn, then.

struct testStruct_s {
    int dummy;
    int* array;
};
 
int array1[] = {0, 1, 2, 3};
int array2[] = {0, 1, 2, 3, 4};
struct testStruct_s testStructArray[] = {
    {0, array1},
    {0, array2}
};

arnold_w wrote:

an embedded microcontroller (ARM)

C programming language struct dynamic array

Member 12785864 wrote:

Have you got a code snippet of how to create a control at runtime?

bool CreateRotation (HWND parent){
   int nchar, ret;
   HGLOBAL hgbl;
   LPDLGTEMPLATE lpdt;
   LPWORD lpw;
   LPWSTR lpwsz;
   hgbl = GlobalAlloc(GMEM_ZEROINIT, 1024);							 // Allocate memory
   if (!hgbl) return false;											 // If allocate fail exit
   lpdt = (LPDLGTEMPLATE)GlobalLock(hgbl);							 // Lock the allocated memory
   lpdt->style = WS_POPUP | WS_CAPTION | WS_SYSMENU;											 // Window style
   lpdt->cdit = 0;													 // Number of controls
   lpdt->x  = 80;												 // X position
   lpdt->y  = 80;												 // Y position
   lpdt->cx = 300;												 // Window width
   lpdt->cy = 100;												 // Window height
   lpw = (LPWORD)(lpdt + 1);										 // Set pointer address
   *lpw++ = 0;														 // No menu
   *lpw++ = 0;														 // Predefined dialog box class (by default)
   lpwsz = (LPWSTR)lpw;												 // Typecast pointer
   nchar = 1 + MultiByteToWideChar(CP_ACP, 0, LanguageString[652], 
	  -1, lpwsz, 50);												 // Create name of window
   lpw += nchar;													 // Increment by size of name
   *lpw++ = 0;														 // No creation data
   GlobalUnlock(hgbl);												 // Release lock on the memory block 
   ret = (int)DialogBoxIndirectParam(GetModuleHandle(0), 
     (LPDLGTEMPLATE)hgbl, 
     parent, 
     (DLGPROC)RotationHandler,
	  0);		     											 // Create the dialog from template
   GlobalFree(hgbl);												 // Free the allocated memory
   if (ret == ID_Ok) {
	  PostMessage(parent, WM_COMMAND, WSC_UPDATEEVERYTHING, 0);
	  return true; 
   } else return false;				 // Return result
};