[solved] C++ - Inherited Classes

RetroX · 2010-08-20 02:27:09

#include <iostream>

struct base
  {
  void func1() { std::cout << "base::func1" << std::endl;
  void func2() { func1(); }
  };

struct inherited : public base
  {
  void func1() { std::cout << "inherited::func1" << std::endl; }
  };

This is probably a pretty stupid question, but I have absolutely no clue how to do this. I'm trying to get inherited::func2 to call inherited::func1 instead of base::func1 without defining inherited::func1. This really is a conceptualised version of what I'm trying to accomplish, but it explains it well enough.

I'm using the latest version of the GCC with the experimental C++0x support.

Last edited by RetroX (2010-08-21 16:08:13)

falconindy · 2010-08-20 02:47:39

You've inherited it, so its part of the class.

int main(void) {
  inherited Foo;
  Foo.func2();
  return 0;
}

RetroX · 2010-08-20 02:56:51

I tried that, and the output was base::func1.

Really, what I'm trying to do is avoid repeating code. But it seems likely that I'll have to at this point.

Last edited by RetroX (2010-08-20 02:59:41)

falconindy · 2010-08-20 03:01:26

Ahhh, I see what you're trying to do. Someone more familiar with C++ than I might be able to tell you how to muck with vtables to get inherited.func1() called instead of base.func1() (if its even possible).

Last edited by falconindy (2010-08-20 03:02:24)

PirateJonno · 2010-08-20 03:12:59

#include <iostream>

struct base
{
virtual void func1() { std::cout << "base::func1" << std::endl;
void func2() { func1(); }
};

struct inherited : public base
{
virtual void func1() { std::cout << "inherited::func1" << std::endl; }
};

Last edited by PirateJonno (2010-08-20 07:09:06)

Allan · 2010-08-20 03:16:35

You only need the virtual in the base struct, not the inherited.

RetroX · 2010-08-20 03:25:15

Yeah, I seem to have gotten it to work. For whatever reason, I thought that I already tried that, but it didn't work.

Either way, thanks!

PirateJonno · 2010-08-20 07:08:37

You're welcome.
@Allan: True, I just prefer being explicit about it.

Trent · 2010-08-21 14:21:43

Plese don't use "C/C++". Your question was about C++ and nothing to do with C.

RetroX · 2010-08-21 16:08:37

Trent wrote:

Plese don't use "C/C++". Your question was about C++ and nothing to do with C.

I've never personally used C, so, I didn't know if it applied to C or not. Sorry about that.

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#1 2010-08-20 02:27:09

[solved] C++ - Inherited Classes

#2 2010-08-20 02:47:39

Re: [solved] C++ - Inherited Classes

#3 2010-08-20 02:56:51

Re: [solved] C++ - Inherited Classes

#4 2010-08-20 03:01:26

Re: [solved] C++ - Inherited Classes

#5 2010-08-20 03:12:59

Re: [solved] C++ - Inherited Classes

#6 2010-08-20 03:16:35

Re: [solved] C++ - Inherited Classes

#7 2010-08-20 03:25:15

Re: [solved] C++ - Inherited Classes

#8 2010-08-20 07:08:37

Re: [solved] C++ - Inherited Classes

#9 2010-08-21 14:21:43

Re: [solved] C++ - Inherited Classes

#10 2010-08-21 16:08:37

Re: [solved] C++ - Inherited Classes

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