Re: segmentation fault overloaded operators
jr.freester@gmail.com wrote:
> I wrote
[..]
All in all, I would say RTFFAQ first, and then ask other questions.
V
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I reposted my code into something that is compilable.
No, you didn't. No matter, after some editing and changing 'private' to
'public', it compiled. And crashed. The error isn't obvious. See
below. And learn to use debuggers, they are your friends.
> I have been
using g++ ver 4.1.2 2007112. I have been careful to follow the rule
of the big three when making custom structures. I still get a
segmentation fault whenever I add three objects of type system
together.
I can add two objects of type System together withou any prolem.. i
/*-------Matrix
Class---------------------------------------------------------------------
*/
#include <assert.h>
#include <iostream>
using namespace std;
class Matrix
{
private:
int row; //number of rows;
int col; //number of col;
double *data; //pointer to pointers (2D data structure of the
matrix;)
public:
/*Constructor*/
Matrix():row(0), col(0){}
You initialise 'row', you initialise 'col'. What's 'data'? Since you
didn't initialise 'data', it contains *garbage*. Then you pass it to
the 'delete[]', KABOOM!
When I initialise 'data' to 0, the program completes fine and prints
some stuff
...
Any help would be appreciated.
Justin
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