gamedevlists-general

[GD-General] Overloading method in derived class

[<sla...@e-...>]

Hello all,
I know this is a C++ specific question but i don't know how=20
to search the answer in google.

I have the following code :
struct Toto { void Add(int x){} };

struct Titi : public Toto { void Add(int x, int y){} };

int main ()=20

{=20

Titi titi;

titi.Add(1);

}

And both MSVC 7 and gcc give me=20

error : 'Titi::Add' : function does not take 1 parameters

sure i could write titi.Toto::Add(1); and this will work but=20

i want to avoid such a pain.

is it a C++ specification problem or a compiler problem ?

Thanks

------------------------

Lagarde S=E9bastien

Neko entertainment

RE: [GD-General] Overloading method in derived class

[Nicolas R. <nic...@fr...>]

Hi,

It's neither a C++ spec problem, nor a MSVC compiler problem.
It's a wanted C++ spec. for method overriding:

Overriding part of overloaded methods hides all other signatures.
It allows function call restriction (since class inheritance IS a
restriction).

You have two choices:

Best choice: Add an "inline void Add(int x) { Toto::Add(x); }" line to
your Titi definition (overloading the Add operator).
Worst choice: Cast your titi in Toto, and call the Add function.

Hope this helps.
Nicolas



-----Original Message-----
I have the following code :
struct Toto { void Add(int x){} };
struct Titi : public Toto { void Add(int x, int y){} };
int main ()=20
{=20
Titi titi;
titi.Add(1);
}
And both MSVC 7 and gcc give me=20
error : 'Titi::Add' : function does not take 1 parameters
sure i could write titi.Toto::Add(1); and this will work but=20
i want to avoid such a pain.
is it a C++ specification problem or a compiler problem ?
Thanks
------------------------
Lagarde S=E9bastien
Neko entertainment