Doubt on template !

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Hi,
I have got some problems about template.There is an example as following.
MaxHeap<HeapNode<Typew,Typep>> * H;(1)
and the definition of the HeapNode is:
template<class Typew,class Typep>(2)
class HeadNode
{
};
then,I compile it, 4 errors on(1).So,could you tell me what does (1)exactly mean? And How can I correct these errors.
Thank you very much !

EDIT (Nelek): Additional information of the OP in "Answer 4"

Yes, I agree,it depends on the version of visual stdio.
Now,I use the VC 6.0.
And right now, I think I can get the key factor of this problem.
That is maybe I should define a class of MaxHeap first.
What do you think?

Posted 28-Dec-09 16:26pm

Jabo·Ley

Updated 29-Dec-09 4:17am

Nelek

v3

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AspDotNetDev · Answer 1 · 2009-12-28T17:13:00

Number one creates a heap of heap nodes of type Typew and Typep. Not sure why two types are needed, and Typew and Typep should be types you define (looks like you are just using the types as they are defined by HeapNode). But just keep in mind that C++ does not like when you put two > in a row or two < in a row (confuses them with stream operators, so you'll have to put a space in between them), but I suppose that might depend on the compiler you use. Modify your original question and post the error messages you get.

«_Superman_» · Answer 2 · 2009-12-28T16:50:00

Solution 1

What are the errors that you get?
Which version of Visual Studio are you using?

Posted 28-Dec-09 16:50pm

«_Superman_»

Nemanja Trifunovic · Answer 3 · 2009-12-29T03:39:00

Solution 4

If you are using an older compiler, start with replacing:

MaxHeap<HeapNode<Typew,Typep>>

with

MaxHeap<HeapNode<Typew,Typep> >

(note an extra space between the closing angle brackets)

Posted 29-Dec-09 3:39am

Nemanja Trifunovic

Updated 29-Dec-09 3:41am

v2

Jabo·Ley · Answer 4 · 2009-12-28T20:42:00

Solution 3

Yes, I agree,it depends on the version of visual stdio.
Now,I use the VC 6.0.
And right now, I think I can get the key factor of this problem.
That is maybe I should define a class of MaxHeap first.
What do you think?

Posted 28-Dec-09 20:42pm

Jabo·Ley

Doubt on template !

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Doubt on template !

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