Where to free memory?

[Phil]

Hello all,
Let's say I have two classes A and B defined as follows:

// ClassA.h //////////////////////////
class ClassA
{
public:
void ClassA(int nItems); // constructor
virtual ~ClassA();
protected:
double *myTable; // My table of nItems double values
}
/////////////////////////////////////


// ClassA.cpp ///////////////////////
void ClassA(int nItems)
{
// Allocate memory for the table of double values
myTable=(double*)calloc(nItems, sizeof(double));
}

~ClassA()
{
// Should I free the memory allocated for myTable here?
// free(myTable);
// myTable=NULL;
}
/////////////////////////////////////


// ClassB.h //////////////////////////
#include "ClassA.h"
class ClassB
{
public:
void ClassB();
protected:
ClassA classA(int nItems);
}
/////////////////////////////////////


// ClassB.cpp ///////////////////////
void ClassB()
{
classA=new ClassA(10);
}
/////////////////////////////////////

My question is: when should I free the memory allocated for myTable
array of object classA ?
I am using MS Visual C++ 6.0 and Vista. Given the above code, I get a
memory leak. OK.
But if I free the memory as commented out in the destructor, I get an
error message pointing at the free(myTable) line
"memory check error at 0x02FDAA50 = 0xFE, should be 0xFD."
What is the correct way to free the memory ?
TIA,
Phil

 

[Victor Bazarov]

Let's say I have two classes A and B defined as follows:
[..shudder..]

My question is: when should I free the memory allocated for myTable
array of object classA ?

Please search the Web for, and read about, the "Rule of Three". Once
you comprehend what it is saying, drop dynamic memory management and

I am using MS Visual C++ 6.0 and Vista.

Get the latest free MS VC++ Express Edition and enjoy a much improved
compiler, a vastly better standard library, et cetera. Did I mention
it's free?

> [..]

V