Passing Pointers by Reference

[RichardF]

Hi,

Can anybody suggest what is the best method when passing pointers to referenced parameters in methods ?

For example :

class CWidget {
public:
void Compare(CWidget& W);
};

// later ....

CWidget *Widgets;
Widgets = new CWidget[10];

// Widgets->Compare(Widgets+1); compiler error - cannot convert ...

Thanks in advance

 

[Zyrenthian]

Widgets->Compare( &(Widgets+1))

Not sure what your doing, but this will work as long as Widgets does not point to the last place (i.e. element 10)

Matt

 

[mingis]

Passing parameters by reference or by pointers internally are identical, it is only question of syntax flexibility. If you use parameters by reference, your call must be as follows:
Widgets->Compare(Widgets[1]);
If you want to pass pointers like Widgets+1, definition of your method must look like
void Compare(CWidget *W);

 

[Zyrenthian]

BTW.. taht & in my original post should be a *. Fat fingers strike again

<Matt