C / C++ / MFC

<br />
a = (char**) calloc(10, sizeof(char)); // main array<br />
<br />
for (int i = 0; i < 10; i++)<br />
{<br />
    a[i] = (char*) calloc(10 , sizeof(char)); // char arrays<br />
}<br />

<br />
#include "stdafx.h"<br />
#include <malloc.h><br />
#include <stdio.h><br />
#include <conio.h><br />
<br />
<br />
class sub<br />
{<br />
public:<br />
	char** a;<br />
<br />
	sub();<br />
	~sub();<br />
};<br />
<br />
<br />
sub::sub()<br />
{<br />
	a = (char**) calloc(10, sizeof(char));<br />
<br />
	for (int i = 0; i < 10; i++)<br />
	{<br />
		a[i] = (char*) calloc(10 , sizeof(char));<br />
	}<br />
<br />
	printf("\n%x - %x - %x\n", a[0], &a[0], *a[0]);<br />
};<br />
<br />
sub::~sub()<br />
{<br />
	for (int i = 0; i < 50; i++)<br />
	{<br />
		char** A = a;<br />
		char* Ai = a[i];<br />
		char* Aii = (char *)*((int*)a[i]);<br />
<br />
		free(a[i]); // <big> crash point </big> :confused:<br />
	}<br />
};<br />
<br />
<br />
class allocater<br />
{<br />
public:<br />
	sub** subs;<br />
<br />
	allocater();<br />
	~allocater();<br />
<br />
};<br />
<br />
allocater::allocater()<br />
{<br />
	subs = (sub**) calloc(10, sizeof(subs));<br />
	int i; <br />
<br />
	for (i = 0; i < 10; i++)<br />
	{<br />
		subs[i] = new sub();<br />
	}<br />
};<br />
<br />
<br />
allocater::~allocater()<br />
{<br />
	int i; <br />
<br />
	printf("destructor allocater");<br />
<br />
	for (i = 0; i < 10; i++)<br />
	{<br />
		delete subs[i];<br />
	}<br />
};<br />
<br />
<br />
void main(int argc, char* argv[])<br />
{<br />
	allocater** a = (allocater**) calloc(10, sizeof(allocater));<br />
	int i;<br />
	<br />
	for (i = 0; i < 10; i++)<br />
	{<br />
		a[i] = new allocater();<br />
	}<br />
	<br />
	printf("allocated");<br />
<br />
<br />
//	getch();<br />
<br />
<br />
<br />
	for (i = 0; i < 10; i++)<br />
	{<br />
		delete a[i];<br />
	}<br />
<br />
<br />
	printf("freed");<br />
<br />
	getch();<br />
<br />
}<br />