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C++ Discussion Thread
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Jun 26th, 2009

wierd template problem

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take a look at this code:

C++ Syntax (Toggle Plain Text)
 
template <class T>
class C {
public:
 
	class A {
 
	protected:
		int x;
	};
 
	class B: public A {
	protected:
		void write() {
			cout << x << endl;
		}
	};
 
};
template <class T>
class C {
public:

	class A {

	protected:
		int x;
	};

	class B: public A {
	protected:
		void write() {
			cout << x << endl;
		}
	};

};

when I try to compile with g++ i get:
test.cpp: In member function ‘void C<T>::B::write()’:
test.cpp:18: error: ‘x’ was not declared in this scope

If I remove the template argument of class C all workes fine ( of course )
Does anyone have an ideea of what is going on?

thx in advance

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kux

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Junior Poster

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Jun 26th, 2009

Re: wierd template problem

Well where are you exactly using template functionalities in this code segment ??? I don't see its usage anywhere in the code given by you.

csurfer

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Posting Pro

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Jun 26th, 2009

Re: wierd template problem

Use this

C++ Syntax (Toggle Plain Text)
void write() {
   cout << this->x << endl;
 }
void write() {
   cout << this->x << endl;
 }

adatapost

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Posting Genius

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Jun 26th, 2009

Re: wierd template problem

Click to Expand / Collapse Quote originally posted by csurfer ...

Well where are you exactly using template functionalities in this code segment ??? I don't see its usage anywhere in the code given by you.

It's just a sample I made to hilight the compile error. I might use the template parameter on other methods I didn't post.

kux

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This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

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