Andre Poenitz wrote:
> Have you checked this work?
I have now.
> If not one has probably derive "diamondlike"
Yes, that would work too.
The code below is interesting in that Derived1 needs to explicitly
redefine data() or I get an error
cxx: Error: trial2.C, line 25: object of abstract class
type "Derived1" is not allowed:
pure virtual function "Base2::data" has no overrider
Derived1 d1;
-----------------^
But I don't think that this will be a problem in this case. However,
I'll ponder further.
#include <ostream>
struct Base1 {
virtual int data() { return 1; }
};
struct Base2 {
virtual int data() = 0;
void print() {
std::cout << "data is " << data() << std::endl;
}
};
struct Derived1: virtual public Base1, virtual public Base2 {
virtual int data() { return Base1::data(); }
};
struct Derived2: virtual public Base1, virtual public Base2 {
virtual int data() { return 2; }
};
int main() {
Derived1 d1;
Derived2 d2;
d1.print();
d2.print();
}
data is 1
data is 2
--
Angus
