Question about pointers and vectors

[JoeC]

vector<Sprite*> box;
+++++++++++++++ +++++++++++++++ ++++
tank = new Bitmap(hdc, IDB_IMAGE2, g_hin);
Sprite * ms = new Sprite(tank, rcBounds, BA_BOUNCE);
break;

box.push_back(m s);

+++++++++++++++ +++++++++++++++ +++++++++

for(vector<Spri te*>::iterator itr = box.begin();
itr != box.end(); itr++){
itr->Update();
}

This isn't working how can I do it better?

[Mike Wahler]

"JoeC" <en*****@yahoo. com> wrote in message
news:11******** *************@o 13g2000cwo.goog legroups.com...

vector<Sprite*> box;
+++++++++++++++ +++++++++++++++ ++++
tank = new Bitmap(hdc, IDB_IMAGE2, g_hin);
Sprite * ms = new Sprite(tank, rcBounds, BA_BOUNCE);
break;

box.push_back(m s);

+++++++++++++++ +++++++++++++++ +++++++++

for(vector<Spri te*>::iterator itr = box.begin();
itr != box.end(); itr++){
itr->Update(); - }

This isn't working how can I do it better?

(*itr)->Update();

-Mike

[Bob Hairgrove]

On 6 Dec 2005 11:40:39 -0800, "JoeC" <en*****@yahoo. com> wrote:

vector<Sprite* >box;
++++++++++++++ +++++++++++++++ +++++
tank = new Bitmap(hdc, IDB_IMAGE2, g_hin);
Sprite * ms = new Sprite(tank, rcBounds, BA_BOUNCE);
break;

box.push_back(m s);

++++++++++++++ +++++++++++++++ ++++++++++

for(vector<Spri te*>::iterator itr = box.begin();
itr != box.end(); itr++){
itr->Update();
}

This isn't working how can I do it better?

WHAT isn't working?? No way to tell from this snippet of incomplete
code.

--
Bob Hairgrove
No**********@Ho me.com

[JoeC]

thanks..

[Victor Bazarov]

JoeC wrote:

vector<Sprite*> box;
+++++++++++++++ +++++++++++++++ ++++
tank = new Bitmap(hdc, IDB_IMAGE2, g_hin);
Sprite * ms = new Sprite(tank, rcBounds, BA_BOUNCE);
break;

box.push_back(m s);

+++++++++++++++ +++++++++++++++ +++++++++

for(vector<Spri te*>::iterator itr = box.begin();
itr != box.end(); itr++){
itr->Update();
}

This isn't working how can I do it better?

FAQ 5.8, I believe, should help to get closer to the solution.

V

[JoeC]

I got help with now problem. It was pretty basic.

But box.push_back(m s); Is still viving me an error. It says that
ms is not declared.
I have still to look up they syntax of the switch/case part

42 C:\Documents and Settings\Owner. ROOT\My
Documents\C++\E ngineII\action. cpp `ms' undeclared (first use this
function)

[Andre Kostur]

"JoeC" <en*****@yahoo. com> wrote in news:1133898039 .843277.38830
@o13g2000cwo.go oglegroups.com:

vector<Sprite*> box;
+++++++++++++++ +++++++++++++++ ++++
tank = new Bitmap(hdc, IDB_IMAGE2, g_hin);
Sprite * ms = new Sprite(tank, rcBounds, BA_BOUNCE);
break;

box.push_back(m s);

+++++++++++++++ +++++++++++++++ +++++++++

for(vector<Spri te*>::iterator itr = box.begin();
itr != box.end(); itr++){
itr->Update();
}

This isn't working how can I do it better?

1st... handy to post what you mean by "This isn't working".

2nd... the type of *itr is Sprite*

So.... (*itr)->Update();

[JoeC]

Thanks, I got that but still the push back part is not working it is
saying that ms is not declared.

[Howard]

"JoeC" <en*****@yahoo. com> wrote in message
news:11******** ************@g4 7g2000cwa.googl egroups.com...

I got help with now problem. It was pretty basic.

But box.push_back(m s); Is still viving me an error. It says that
ms is not declared.
I have still to look up they syntax of the switch/case part

42 C:\Documents and Settings\Owner. ROOT\My
Documents\C++\E ngineII\action. cpp `ms' undeclared (first use this
function)

Judging from the indentation in the incomplete code you posted, I suspect
you're inside some kind of loop or switch statement when ms is declared.
Instead of declaring it inside that block, you could declare it before the
block. Or perhaps, instead, you need to move the push_back to immediately
after the line where you declare the ms variable (and create its instance)?
But we can't tell from your sparse example which approach is appropriate.

-Howard

[Ben Pope]

JoeC wrote:

vector<Sprite*> box;
+++++++++++++++ +++++++++++++++ ++++
tank = new Bitmap(hdc, IDB_IMAGE2, g_hin);
Sprite * ms = new Sprite(tank, rcBounds, BA_BOUNCE);
break;

box.push_back(m s);

+++++++++++++++ +++++++++++++++ +++++++++

for(vector<Spri te*>::iterator itr = box.begin();
itr != box.end(); itr++){
itr->Update();
}

This isn't working how can I do it better?

What's Sprite?

Looks like sprite is a pointer, and your iterator is a "pointer" so
you'll need to dereference twice.

Ben Pope
--
I'm not just a number. To many, I'm known as a string...