Dynamic Arrays C++ (Builder 6)

[dsmart]

Hi all. Help me please to write some code.
I have 2-dimension and 3-dimension arrays. Firs part of code just allocating memory for them and delete both arrays immediately. All OK, there is no memory leak effect.

---

Code C++ - [expand]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
int n = 10;
double ***Ar2, **B;
void __fastcall TForm1::Button3Click(TObject *Sender)
{
    Ar2 = new double**[n];
    B = new double *[n];
 
    for (int k=0; k<n; k++)
    {
        Ar2[k] = new double*[n];
        B[k] = new double[n];
    }
    for (int k=0; k<n; k++)
        for (int j=0; j<n; j++)
        {
            Ar2[k][j] = new double[n];
            B[k][j] = j;
        }
 
//delete arrays
    for (int k=0; k<n; k++)
        for (int j=0; j<n; j++)
            delete[] Ar2[k][j];
    for (int k=0; k<n; k++)
    {
        delete[] Ar2[k];
        delete[] B[k];
    }
 
    delete[] Ar2;
    delete[] B;
}

---

Now I’m trying to copy 2-dim array into one of elements of 3-dim array. SO, need to delete "delete[]" operator from ending cycles to avoid EAccess violation error (non existing element). And i’m using delete[] Ar2[1]; before copying address of 2-dim array into it, but still have memory leak.

---

Code C++ - [expand]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
int n = 10;
double ***Ar2, **B;
void __fastcall TForm1::Button3Click(TObject *Sender)
{
    Ar2 = new double**[n];
    B = new double *[n];
 
    for (int k=0; k<n; k++)
    {
        Ar2[k] = new double*[n];
        B[k] = new double[n];
    }
    for (int k=0; k<n; k++)
        for (int j=0; j<n; j++)
        {
            Ar2[k][j] = new double[n];
            B[k][j] = j;   //fill array by some data
        }
 
    delete[] Ar2[1];   //delete content of Ar2[1] 
    Ar2[1] = B;
//delete arrays
    for (int k=0; k<n; k++)
        for (int j=0; j<n; j++)
            delete[] Ar2[k][j];
    for (int k=0; k<n; k++)
    {
        delete[] Ar2[k];
//        delete[] B[k];  ******EAccess violation if not commented*******
    }
 
    delete[] Ar2;
    delete[] B;
}

---

Tell me, where i miss. Program is allocating about 500 kB of RAM after each button press, when executing second code