Use a template with a class

[sake]

Hi,
I recently came across a problem in my C++ adventures. I was making a function class that happened to use classes. It also needed to be flexible for any variable type. So without hesitance, I used a template. Happily, I continued the program, until I began to declare the list. Here was my code:

template <class T>

class Stack {
	public:  
		virtual void push(T c) = 0;
		virtual char pop() = 0;
};

template <class T>

class List_Stack : public Stack {
      
	private:
		list <T> lc;
};

As we can see, this snippet has some problems, and a question arises because of that problem. How can I use a template with the list class? So that list will work for any variable type.

Also, the compiler keeps complaining this:

24 program.cpp expected class-name before '{' token

Line 24 refers to:

class List_Stack : public Stack {

Any help?

Thanks,
Austen

[Prasannaa]

Hi,

Since Stack is a template class it needs a Template Argument.
Second, list and std namespace has to included.
class List_Stack : public Stack<T>

#include<list>
//using namespace std;

template <class T>
class Stack {
	public:  
		virtual void push(T c) = 0;
		virtual char pop() = 0;
};

template <class T>
class List_Stack : public Stack<T> {
      
	private:
		std::list<T> lc;
};

Thanks,
Prasannaa