• Container adapters are interfaces that provide limited functionalities regardless of the underlying structures
• Container adapters do not inherited from the underlying container type
• Underlying structures can be vector, deque, and list, default is deque
• The C++ STL Container Adaptor
• stackoverflow.com
• What are Containers/Adaptors

#include <iostream>
#include <list>
#include <vector>
#include <stack>

int main(int argc, char *argv[])
{
	std::vector<int> v = {1, 2, 3, 4};
	std::stack<int, std::vector<int>> s(v);
	v.clear();//remove vector

	//size
	std::cout<<"Size: "<<s.size()<<std::endl;

	//push
	s.push(5);
	std::cout<<"Top: "<<s.top()<<std::endl;

	//pop
	s.pop();
	std::cout<<"Top: "<<s.top()<<std::endl;

	return 0;
}
			

#include <iostream>
#include <list>
#include <stack>

int main(int argc, char *argv[])
{
	std::list<int> v = {1, 2, 3, 4};
	std::stack<int, std::list<int>> s(v);
	v.clear();//remove vector

	std::cout<<"Top: "<<s.top()<<std::endl;

	return 0;
}
			

//Rectangle.h
#ifndef RECTANGLE_H
#define RECTANGLE_H
class Rectangle
{
	private:
		double width;
		double length;
	public:
		//constructor
		Rectangle(){}
		Rectangle(double w, double l):width(w), length(l){}

		//accessor
		double getWidth() const;
		double getLength() const;
		double getArea() const;

		//mutator
		void setWidth(double w);
		void setLength(double l);
};
#endif

//Rectangle.cpp
#include "Rectangle.h"

double Rectangle::getWidth() const
{
	return width;
}

double Rectangle::getLength() const
{
	return length;
}

double Rectangle::getArea() const
{
	return width*length;
}

void Rectangle::setWidth(double w)
{
	width = w;
}

void Rectangle::setLength(double l)
{
	length = l;
}

//main.cpp
#include <iostream>
#include <list>
#include <stack>
#include "Rectangle.h"

int main(int argc, char *argv[])
{
	std::list<Rectangle> l;

	//insert elements
	auto it = l.begin();
	l.insert(it, Rectangle(1, 2));
	++it;
	l.insert(it, Rectangle(2, 3));
	++it;
	l.insert(it, Rectangle(3, 4));

	//list to stack
	std::stack<Rectangle, std::list<Rectangle>> s(l);//12
	std::cout<<s.top().getArea()<<std::endl;

	return 0;
}
			

• cplusplus.com