Re: Writing operator functions

Yes, hi

How to write "operator +" and "operator =" functions in a class with
a defined constructor? The following code demonstrates that I don't
really understand how to do it... I think it has something to do with
the compiler calling the destructor twice. Could someone point out
where I go wrong?
P.S.: The error it gives is "Debug Assertion Failure ....." (at run
time)
P.P.S: Everything else works just fine (without the use of "operator
+"
and "operator =" functions)

//code "tested" on Microsoft Visual C++ 6.0
#include <iostream>

using namespace std;

class DatArray {
public:
int rows, columns;
double **a;
DatArray(int r, int c);
~DatArray();
void operator = (double d1);
void operator = (DatArray da1); //problematic

void operator ++ ();
//DatArray operator + (double d1); //does not work
};
[..]