Inheritance Fun

**XSquared** · 08-09-2005

Say I have class A and class B as follows:

Code:

class A {
  public:
    void dostuff(void) { cout<<"A is doing stuff"<<endl; }
};

class B : public A{
  public:
    void dostuff(void) { cout<<"B is doing stuff"<<endl; }
};

Then if I execute the following code:

Code:

vector<A*> alist;
alist.push_back(new A());
alist.push_back(new B());

for(int i=0;i<2;++i) {
  (alist.at(i))->dostuff();
}

The output will be:

Code:

A is doing stuff
A is doing stuff

My problem is that I want B's dostuff() function to get called the second time instead of A's... any way to do that?

Edit: On an unrelated note, how do some of you manage to get the syntax highlighting in your code tags?

**prog-bman** · 08-09-2005

C has inheritance?

**XSquared** · 08-09-2005

Crap, wrong forum. Any mods mind moving this to the C++ board?

**prog-bman** · 08-09-2005

As for the syntax highlighter I know most just use a program to do it for you. I used this http://www.codeguru.com/Cpp/misc/sam...icle.php/c4693 (Its for windows).

***webmaster*** · 08-09-2005

Too much Java? You forgot to declare the function virtual.

**XSquared** · 08-09-2005

Thanks.

**major_small** · 08-09-2005

I use a syntax highliter like prog-bman said. I coded mine in Java, so if you need something multi-platform, I'll send it along to you... I'll warn you ahead of time that it's somewhat buggy though.

the most common problems: too much highlighting (ifstream)
escape characters in strings:

Code:

int main()
{
	std::cout<<"qoth the raven, \"nevermore\"";
	return 0;
}

**~~ILoveVectors~~** · 08-10-2005

ah major looks like its time for you to rewrite it in c++ and
compete in the new contest

**major_small** · 08-10-2005

I thought about it... ATM I'm too busy, and if I had the time, I'd work on fixing that version up... and when I'm done with that, I have other plans for it...

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