iterators

Hello.
In C++, I'm using an iterator to iterate through a vector of pointers.
How do I perform operations on the iterator?
I've tried several things but keep getting errors. This is where I get the error:

//In constructor of interface class
d_ClassA.push_back(new Class B(3)); //d_ClassA is a..                                     //std::vector<ClassA*>
...

//member-function in interface class
...
for (vector<ClassA*>::iterator i = 0; i != d_ClassA.end(); i++) {
    string classAFilename= (*i)->getFilename();
...

I guess there could be something else that is wrong. But is the code above correct?

OP here. sorry its
vector<ClassA*>::iterator i = d_ClassA.being()

keep getting errors
not posting the error message
9.5/10

>>3
In case you couldn't tell by looking, the error is 'Segmentation fault'.

>>4
No we cannot fuckin tell by looking.  Noobtards claim "halp i has error" all the time for any variety of error.  And nobody should have to tell by looking either; you need to help them help you if you want their advice that badly.

>>1
It's because you didn't use the [code] tags. But don't worry, there are enough tools here that will help you even though you didn't care to format your code.

>>4
>>3 here.
No, like >>5 said, we can't tell by looking, the error isn't in this snippet, and you didn't even bother to say if it's compile-time or run-time.

What are you using as an IDE? If it's VC++, go in the debug menu, exceptions, and make it break whenever there's an exception (activate them all, who cares). If it's emacs or whatever, I don't debug Sepples with it so I don't know. Then check if the segfault is really when you dereference the iterator, or in your getFilename() call, or wherever. If you see a null pointer that shouldn't be null, use breakpoints. Put one at your call, check the integrity of your data structure and its content. Put one in the classb destructor and check when it gets destroyed. You know, what we call ``debugging''. The bug isn't caused by what you posted itself.
Also ヌルポ my anus