c++builder - How can I find the number of elements of a multidimentional dynamic array -

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my pointer declared in header file:

int (*array)[10];

i pass argument function initializes array:

void __fastcall tform1::initarray(const int cnt) {      try         {         form1->array = new int[cnt][53];         }     catch(bad_alloc xa)         {         application->messageboxa("memory allocation error sel. ", mb_ok);         }      form1->zeroarray();     }     //---------------------------------------------------------------------------

i set element of array "0":

    void __fastcall tform1::zeroarray()     {     __int16  cnt = sizeof_array(array);     // here notice problem. cnt not correct size of first level of array.      if(cnt)         {         for(int n = 0; n < cnt; n++)             {             for(int x = 0; x < 53; x++)                 {                 form1->array[n][x] = 0;                 }             }         }     }     //---------------------------------------------------------------------------

this defined size of array macro:

#define sizeof_array(a) (sizeof((a))/sizeof((a[0])));

when array created 10 elements of 53 elements array[10][53] return sizeof_array == 0. should equal 10.

i have tried several variation of macro , doing straight math sizeof() cannot correct output. not doing?


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